Lamellar compounds of graphite fibers were prepared by electrochemical intercalation. The dependence

Many carbon materials have been examined for the negative-electrode matrices of rocking-chair-type lithium (Li) ion batteries. Electrochemical lithium intercalation into graphite has been studied in ethylene carbonate (EC) based electrolytes using X-ray diffraction (XRD) and electrochemical quartz crystal microbalance techniques. The ...

Simultaneous electrochemical and quartz crystal microbalance measurements were used to study the intercalation of Li+ into V6013. It was found that at low to modest concentrations of the intercalant, the stoichiometry of the reaction is simple metal ion i...

Lamellar compounds of graphite fibers were prepared by electrochemical intercalation. The dependence of the electrical resistance on the intercalate concentration was determined by a quasi simultaneous method. A factor 30 decrease of the relative fiber re...

Two techniques of electrochemical intercalation found to increase lithium capacity of electrode made

Mesoporous intercalation electrode materials were prepared, characterized, and their electrochemical performance evaluated. The usual characterization techniques were complemented by our (novel) use of electron microprobe analysis to examine the homogenei...

Jun 25, 2003 ... Greener Method Developed for Intercalating Graphite Fibers With Bromine. Two illustrations. Method used to carry out the electrochemical ...

Nickle hexacyanoferrate is a polynuclear inorganic ion intercalation material that loads (intercalates) and elutes (deintercalates) alkali cations from its structure when electrochemically reduced and oxidized, respectively. Nickel hexacyanoferrrate (NiHCF) is known to preferenti...

Nickle hexacyanoferrate is a polynuclear inorganic ion intercalation material that loads (intercalates) and elutes (deintercalates) alkali cations from its structure when electrochemically reduced and oxidized, respectively. Nickel hexacyanoferrrate (NiHCF) is known to preferenti...

The purpose of this research is to investigate the Piezo- Electrochemical Transducer (PECT) effect in intercalated graphite as a possible mechanism of actuation for micro-electromechanical systems (MEMS). This dissertation presents the results of research...

The intercalated disk (ID) is a complex structure that electromechanically couples adjoining cardiac myocytes into a functional syncitium. The integrity of the disk is essential for normal cardiac function, but how the diverse elements are assembled into a fully integrated structure is not well understood. In this study, we examined the assembly of new IDs in primary cultures ...

This paper examined effects of heat treatment and milling (before or after heat treatment) on the (electrochemical) intercalating ability of needle petroleum coke; natural graphite particles are included for comparison. 1 tab, 4 figs, 7 refs.

Using a sufficiently sensitive coulometric technique it has been possible, for the first time, to generate electrochemically the potential plateaus for the various lithium intercalation compounds, viz. C sub 64 Li, C sub 32 Li, C sub 18 Li and C sub 12 Li...

In this work, a new signal amplification strategy based on hollow PtCo nanochains (HPtCoNCs) functionalized by bi-enzyme-horseradish peroxidase mimicking DNAzyme (HRP-DNAzyme) and glucose oxidase (GOD), as well as ferrocene-labeled secondary thrombin aptamer (Fc-TBA 2), is developed to construct a highly sensitive electrochemical aptasensor. The HRP-DNAzyme contains a special ...

A novel approach for bulk synthesis of lithium-intercalated graphene sheets through the reduction of exfoliated graphene oxide in liquid ammonia and lithium metal is reported. It is demonstrated here that as-synthesized lithiated graphite oxide sheets (Li-RGO) can be directly used as an electrode material in lithium batteries. The electrochemical studies ...

... about I an by SEM. The projected area of the eleccrode "as, ,, structure of V60 13 through which canons diffuse to reside on sites cm2. ...

... oriented pyrolytic graphite and Chapter 7 concludes ... conductors such as silicon, carbon black and ... properties, such as corrosion resistance, have ...

... In contrast, the piezoelectric material polyvinylidene difluoride (PVDF) generates only 0.01% strain and polysilicon thermal expansion between ...

... is to provide an intercalating solvent system for ... MIXING, NONAQUEOUS ELECTROLYTES, SALTS, ORGANIC SOLVENTS, SOLUTIONS(GENERAL ...

Apr 24, 2000 ... The electrochemical test involved cycles of lithium intercalation and ... CAPACITIES OF THE CARBON MATERIALS TO STORE AND RELEASE LITHIUM ...

In this work the electrochemical intercalation of oxygen in La_2CuO_4 phases has been studied. Oxygen intercalation has been performed at different anodic potentials for fixed time in alkaline solution (1 M NaOH) at room temperature. The electrochemistry of the phenomena taking place at the oxide-solution interface has been ...

Co-intercalated transition-metal disulfides in which two alkali metals are incorporated into the lattice are unique and unexplored materials. The major objective of our research program is the determination of the structural and electrochemical properties...

In this paper, the electrochemical degradation of polypyrrole film was studied by means of overpotential application. The overpotential was 0.58 V versus SCE, and after every 5 min of application of 0.58 V, a cyclic voltammogram was recorded in the range of -0.7 to 0.5 V as well as an electrochemical impedance spectroscopy and ...

Magnesium-substituted birnessite and zinc chalcophanite have been synthesized through a novel procedure based on a combination of coprecipitation and metal ion intercalation techniques. The materials showed very promising performance as hosts for lithium intercalation. Upon galvanostatic discharge, Mg-birnessite and Zn-chalcophanite composite cathodes were ...

Nickel hexacyanoferrate is a polynuclear inorganic ion intercalation material that loads (intercalates) and elutes (deintercalates) alkali cations from its structure when electrochemically reduced and oxidized, respectively. Nickel hexacyanoferrrate (NiHCF) is known to preferentially intercalate cesium over all ...

Nickel hexacyanoferrate is a polynuclear inorganic ion intercalation material that loads (intercalates) and elutes (deintercalates) alkali cations from its structure when electrochemically reduced and oxidized, respectively. Nickel hexacyanoferrate (NiHCF) is known to preferentially intercalate cesium over all ...

The interaction of anticancer chalcone [AMC, 1-(4?-aminophenyl)-3-(4-N,N-dimethylphenyl)-2-propen-1-one] with DNA has been explored using electrochemical, spectroscopic and viscometric techniques. A shift in peak potential and decrease in peak current were observed in cyclic voltammetry and hypochromism accompanied with bathochromic shift were noticed in ...

This paper reports on a new compound with graphite-like structure, BC[sub 2]N which has been synthesized by a vapor-phase reaction of acetomtrale (CH[sub 3]CN) and borontrichloride (BCl[sub 3]). The electrochemical behavior of BC[sub 2]N was investigated in propylene carbonate (PC)-based solutions containing lithium (Li) salts. Cyclic voltammetric curves of the BC[sub 2]N ...

Lithium can be intercalated into a wide variety of materials using nonaqueous electrochemical cells. The use of aqueous methods is less common because of the reactivity of many lithium intercalation compounds with water. Here the authors show that lithium can be intercalated into host compounds from aqueous LiOH ...

. These electrochemical data are in excellent correlation with the RnaseH protection studies[14,15] and NMR results.[16An Electrochemical Probe of DNA Stacking in an Antisense Oligonucleotide Containing a C3'- endo-active intercalator, such as methylene blue, bound to the close-packed DNA films is electrochemically ...

Electrochemical intercalation of sodium ions into C[sub 60] or C[sub 60]/C[sub 70] mixtures has been obtained in solid state cells working with a ionic conducting polymeric electrolyte. Low speed cyclic voltammetry and low intensity galvanostatic charge experiments give evidence for five successive redox states, as previously noticed for lithium ion ...

Intercalation of lithium into the vacant sites of a host compound can be achieved electrochemically using non-aqueous electrolytes. The use of aqueous electrolyte is less common because of the reactivity of many lithium intercalation compounds with water. Here we propose that lithium could be intercalated using ...

... existence of the above-mentioned phenomenon of a negative differenci-effect; that is, an increase in the rate of autolysis accompanying increase in ...

, the container was rotated with 800 rpm for 10 h using a high-speed ballmilling machine. The electrochemical. � 2008 The Electrochemical Society. DOI: 10.1149/1.3032115 All rights reserved. Manuscript submitted structure in the viewpoint of relationship between electrochemical and structural properties. Depending

Dependence of Electrochemical Properties of Vanadium Oxide Films on Their Nano- and Microstructures Vanadium pentoxide (V2O5) has attracted a lot of attention as a Li intercalation host, due to its layered- and plain-structured vanadium oxide films are studied, and the dependence of electrochemical properties

We present 13 C high-resolution magic-angle-turning (MAT) and magic angle spinning nuclear magnetic resonance data of Cs and Rb intercalated single walled carbon nanotubes. We find two distinct phases at different intercalation levels. A simple charge transfer is applicable at low intercalation level. The new phase at high ...

We report electrochemical and x-ray-diffraction studies of the intercalation of lithium in graphite and in disordered carbons. The phase diagram of electrochemically intercalated graphite agrees well with previous work on samples prepared by chemical methods. The well-known staged phases present in ...

Co-intercalated transition-metal disulfides in which two alkali metals are incorporated into the lattice are unique and unexplored materials. The major objective of our research program is the determination of the structural and electrochemical properties of lithium co-intercalated disulfides. The TiS/sub 2/ compounds have been ...

Nonaqueous electrochemical cells using carbon as both the negative and positive electrodes have been proposed in the literature. In such dual graphite cells, lithium intercalculates into the negative electrode, and the anion intercalates into the positive electrode when the cells are charged, depleting the electrolyte of salt. Here, the origin of the cell ...

The energy density of Li/intercalation electrode couples are determined by the molar volume or weight of the host materials, the width of the composition intervals in which the intercalation material can be reversibly operated, and the magnitude of the emf. In most applications, the volumetric energy density counts more than energy density by weight; ...

Sol-gel processing of V{sub 2}O{sub 5} yields amorphous aerogels (ARG) and xerogels (XRG) that serve as high capacity intercalation hosts for lithium ions. The insertion process is highly reversible in both the aerogel and xerogel form, suggesting that they are attractive for rechargeable lithium batteries and other electrochemical devices.

A new hybrid material consisting of ferrocene and layered carbon (LC: graphene oxide (GO) or reduced graphene oxide (RGO)) was prepared through a facile intercalation approach. The structure of ferrocene was well maintained while the strong ?-? interaction between LC and ferrocene remarkably suppressed the sublimation of ferrocene and promoted ferrocene to decompose into iron ...

The electrochemical double-layer structure plays an important role in Li-ion intercalation during charging of Li-ion batteries with a graphite anode. In our recent Molecular Dynamics studies of a proposed accelerated charging method [I. Abou Hamad et al., Phys. Chem. Chem. Phys. 12, 2740-2743 (2010)], we notice that ethylene carbonate and propylene ...

Preliminary X-ray analysis of ground mixtures of lithium and carbon black and electrochemical studies of cathodized carbon black indicate the presence of Li-C compounds, probably intercalates.

Carbons derived from polymethylacrylonitrile (PMAN) have been studied for use as intercalation anodes in Li-ion cells. The effect of Si doping upon the electrochemical performance of PMAN carbons was studied using tetravinylsilane (TVS) and tetramethysila...

The hydration changes that accompany the DNA binding of five intercalators (ethidium, propidium, proflavine, daunomycin, and 7-aminoactinomycin D) were measured by the osmotic stress method with use of the osmolytes betaine, sucrose, and triethylene glycol. Water uptake was found to accompany complex formation for all ...

Interactions between the intercalant and the host have been studied in homogeneous amorphous Li(x)WO3 prepared by electron beam evaporation, using electrochemical experiments with films of different thickness (100-400 nm). We have related the intercalation thermodynamics, described previously by us [Solid State Ionics 2005, 176, 1701] ...

The discharge and charge characteristics of gamma-FeOOH products prepared from the intercalation compound of FeOCl and 4-aminopyridine were investigated in lithium cells and compared with those of FeOOH prepared from the intercalation compound of FeOCl and aniline (a-FeOOH(AN)). The polarization of gamma-FeOOH cathode during the discharge and charge were ...

To clarify the electrochemical processes governing the performance of lithiated carbon electrodes and obtain appropriate physicochemical properties, experiments conducted with a single-fiber carbon microelectrode (3.5 {micro}m radius, 1 cm length) are mathematically simulated. Equilibrium-potential data are used to determine the activity coefficient of the lithium ...

The past decade has seen an important development of materials for high-performance energy storage systems. Particularly, the field of electrode materials for advanced lithium batteries has attracted the interest of numerous researchers. Petroleum coke samples of different origins and heat treated at different temperatures below 3100 K have been studied by spectroscopic and ...

OAK-B135 (IPLD Cleared) Basic materials science research on materials for anodes and cathodes in electrochemical cells. The work is a mix of electrochemical measurements and analysis of the materials by transmission electron microscopy and x-ray diffractometry. The emphasis is on the thermodynamics and kinetics of how lithium is ...

This book presents the papers given at a conference on electrochemistry. Topics considered include the electronic resistivity of lithium and iron oxides, the electrotwinning of intermetallic compounds, the electrochemical intercalation of lithium in graphite using a molten-salt cell, an electrochemical study of indium behaviour in ...

A primary or secondary electrochemical cell is described comprising: an anode containing lithium when in a charged state; a gelled electrolyte system comprising polyacrylonitrile (PAN), plasticizer including [gamma]-butyrolactone ([gamma]-BL) and a lithium electrolyte salt; and a cathode comprising a cathode active material selected from the group consisting of transition ...

An electrochemical cell which has a negative electrode including an alkali or alkali-earth metal dissolved in liquid ammonia, a positive electrode, an electrolyte, and a separator. The positive electrode is constituted by a solution in ammonia of a chalcogen or of a chalcogenide or of an emulsion or suspension in ammonia of a solid compound suitable for ...

A review is presented of the problems associated with the disintegration of graphitic nuclear fuel elements. The possibilities presented in this field by methods based on the formation of graphite intercalation compounds are discussed. Chemical and electrochemical methods used for disintegrating graphitic fuel elements are discussed. The last ...

Vanadium pentaoxide and silver vanadium oxides are promising cathode materials for lithium ion battery as it allows easy intercalation/deintercalation of Li+ due its open layered structure. During Li+ intercalation energy is stored as chemical potential and during deintercalation the energy is released as electricity. Because of the large surface area ...

The process of penetration of cobalt atoms through the h-BN nanomesh on Rh(111) is investigated with both spectroscopic and microscopic techniques. It is discovered that oxygen coadsorption can drastically modify the physical properties and behavior of the deposited Co clusters upon postannealing. In the absence of oxygen, Co forms small nanoparticles in the pores (bonding parts) of the h-BN ...

Many anticancer drugs, such as doxorubicin (DXR), intercalate into nuclear DNA of cancer cells, thereby inhibiting their growth. However, it is not well understood how such drugs interact with mitochondrial DNA (mtDNA). Using cell and molecular studies of cultured cells, we show that DXR and other DNA intercalators, such as ethidium bromide, can rapidly ...

This article summarizes our most recent studies on improved Li+-intercalation properties in vanadium oxides by engineering the nanostructure and interlayer structure. The intercalation capacity and rate are enhanced by almost two orders of magnitude with appropriately fabricated nanostructures. Processing methods for single-crystal V2O5 nanorod arrays, ...

Li-doped pentacene has been developed by using an electrochemical approach; that is, constant-potential electrolysis. Li-doped pentacene was characterized by Raman spectrometry and x-ray diffraction measurements. Lithium doping introduces a modification of the C-H vibrational modes located at the end of pentacene molecules. A low doping level has been observed for ...

Transport processes in large measure determine the rate at which electrolytic metal deposition and dissolution can be conducted. Unusually high rates, often accompanied by the formation of solid reaction products, are achieved in electrochemical machining...

Graphite is composed of a series of stacked parallel graphene layers bonded by weak van der Waals forces. Although the weak interactions that hold the graphene sheets together allow them to slide readily over each other, the numerous weak bonds make it difficult to separate the sheets. A graphene sheet is a two-dimensional platelet consisting of a few graphene layers with an overall thickness in ...

Solid-state electrochemical cells have been prepared with C{sub 60} vacuum-evaporated thin films, a Li- or K-source counter electrode and a polymer PEO-LiClO{sub 4} (PEO-KCl) electrolyte. The electrochemical intercalation in C{sub 60} of Li{sup +} (or K{sup +}) ions has been performed under constant current conditions up to a formal ...

Electrochemical lithium intercalation in VO{sub 2}(B) electrodes in aqueous electrolytes has been studied by means of electrochemical methods (such as cyclic voltammetry and constant current discharge and charge) as well as atomic absorption spectrophotometry. Experiments were conducted in various buffer electrolytes having a range of ...

Anodic formation of graphite intercalation compounds and their cathodic decomposition have been investigated in this study. The electrode is a nonporous composite of 80 percent weight natural graphite and 20 percent weight polypropylene ''CPP.'' The electrolytes were 0.1 - 18 M 0.1 - 50 M HF and others. Current voltage curves indicate fast ...

V2O5 has been widely used in a variety of technological applications such as solid state battery cathodes, solar cell windows, and electrochromic devices, as it allows easy intercalation/deintercalation of different ions due its open layered structure. However, the electrochemical properties of V2O5 critically depend on the details of its composition, and ...

We report on the electronic properties of Cs-intercalated single-walled carbon nanotubes (SWNTs). A detailed analysis of the 13C and 133Cs nuclear magnetic resonance (NMR) spectra reveals an increased metallization of the pristine SWNTs under Cs intercalation. The 'metallization' of CsxC materials where x=0-0.144 is evidenced from the increased local ...

The PD-(D/E)XK type II restriction endonuclease ThaI cuts the target sequence CG/CG with blunt ends. Here, we report the 1.3?� resolution structure of the enzyme in complex with substrate DNA and a sodium or calcium ion taking the place of a catalytic magnesium ion. The structure identifies Glu54, Asp82 and Lys93 as the active site residues. This agrees with earlier bioinformatic predictions and ...

Porous electrodes and experimental prototypes of rechargeable batteries based on a novel electrochemical system graphite-HBF{sub 4} + tetrafluoroborate additives-anthraquinone are developed. Intercalation of anions in the graphite electrode is studied in detail and the intercalation potential is determined (E{sub i} {approximately} ...

The protonic solid-state batteries with different intercalating cathodes such as MnO2, PbO2 and V2O5 were fabricated using composite zinc as an anode and montmorillonite (Al2O3.4SiO2.H2O.xH2O) as solid electrolyte. The discharge profile of these electrochemical cells, in series and parallel combinations, was recorded at constant current drain. Proton ...

Disordered polymethacrylonitrile (PMAN) carbon monoliths have been studied as potential tailored electrodes for lithium ion batteries. A combination of electrochemical and surface spectroscopic probes have been used to investigate irreversible loss mechanisms. Voltammetric measurements show that Li intercalates readily into the carbon at potentials 1V ...

Carbonaceous Materials show great potential as anode materials for high energy density lithium ion battery. We have intercalated lithium into carbon nanotubes by using electrochemical method. Single-walled carbon nanotubes were first synthesized by laser-ablation technique and then deposited on metal substrates as electrodes. The charge and discharge ...

We report on successful intercalation of multiwall (MWNT) and single wall (SWNT) carbon nanotubes with alkali metals by electrochemical and vapor phase reactions. A LiC10 compound was produced by full electrochemical reduction of MWNT. KC8 and CsC8-MWNT first stage derivatives were synthesized in conditions of alkali vapor saturation. ...

Electrochemical intercalation of lithium into carbons has been studied using mesophase-pitch-based carbon fibers with different heat-treatment temperatures, coke, and graphites as anodes for secondary lithium batteries. The variations in the average layer spacing and the voltage profile for the carbons with intercalating depend on the ...

Minute colony mutations in C. reinhardtii are induced with 100% efficiency by intercalating dyes such as acriflavin and ethidium bromide. These mutants form small colonies on petri plates because they undergo only 8-9 mitotic divisions before growth ceases. In liquid media without the dye the mutants show gross alterations in mitochondrial structure and function. Here we ...

A templated carbon was prepared by the pyrolysis of pyrene impregnated into pillared clay (PILC). The electrochemical performance of this was evaluated with the goal of using this material as an anode in Li-ion cells. The reversible capacity was measured as a function of C rate and the cycling characteristics were determined for various intercalation ...

A templated carbon was prepared by the pyrolysis of pyrene impregnated into pillared clay (PILC). The electrochemical performance of this was evaluated with the goal of using this material as an anode in Li-ion cells. The reversible capacity was measured as a function of C rate and the cycling characteristics were determined for various intercalation ...

Based on the first-principles plane wave pseudo-potential method, the electronic structure and electrochemical performance of Li x Sn4Sb4 ( x=2, 4, 6, and 8) and Li x Sn1- x Sb4 ( x=9, 10, 11, and 12) phases were calculated. A Sn-Sb thin film on a Cu foil was also prepared by radio frequency magnetron sputtering. The surface morphology, composition, and lithium ...

Lithium iron phosphate is one of the most promising positive-electrode materials for the next generation of lithium-ion batteries that will be used in electric and plug-in hybrid vehicles. Lithium deintercalation (intercalation) proceeds through a two-phase reaction between compositions very close to LiFePO(4) and FePO(4). As both endmember phases are very poor ionic and ...

Lithium iron phosphate is one of the most promising positive-electrode materials for the next generation of lithium-ion batteries that will be used in electric and plug-in hybrid vehicles. Lithium deintercalation (intercalation) proceeds through a two-phase reaction between compositions very close to LiFePO4 and FePO4. As both endmember phases are very poor ionic and ...

Lithium ion rechargeable batteries are predicted to replace Ni/Cd as the workhorse consumer battery. The pace of development of this battery system is determined in large part by the availability of materials and the understanding of interfacial reactions between materials. Lithium ion technology is based on the use of two lithium intercalating electrodes. Carbon is the most ...

The reversible phase transformation is reported from hexagonal to monoclinic structure responding to the intercalation/deintercalation of Na(+) between MnO(2) nanosheets upon potential cycling in aqueous electrolyte via an in situ Raman technique. This structural evolution will influence the Na(+) diffusion process in MnO(2) nanosheets and cause phase retention during the ...

New materials and processes in electronic surface and electrochemical technologies are discussed. Among the specific technologies considered are: organic electronic materials; polyoxymethane whiskers; and thin film SAW devices. Consideration is also given to: multipurpose corrosion inhibitors for naval aerospace applications; methods of improving lead-acid battery performance; ...

lattice. This has been extensively investigated in order to understand graphite intercalation compounds29 EXPERIMENTAL Graphene samples were produced by micro-mechanical cleavage of bulk graphite and deposited on Si of thickness dTG acts like a parallel-plate capacitor. Therefore, the geometrical capacitance in this case

Individual carbon-fiber electrodes are used to isolate characteristics intrinsic to the lithiated-carbon fiber. The results are not complicated by the influence of binders, electronically conductive additives, current collectors, or other components necessary for the fabrication of porous carbon electrodes. Central to the technique is the use of microelectrode instrumentation and microscopic ...

into polypyrrole/silver vanadium oxide composite used for lithium primary batteries Jong-Won Lee, Branko N. Popov vanadium oxide (SVO) used for lithium primary batteries were chemically synthesized by an oxidative vanadium oxide; Polypyrrole; Lithium primary batteries 1. Introduction Silver vanadium oxide (SVO), Ag2V4O

The effects of carbon structure and surface oxygen on the carbon's performance as the anode in lithium-ion battery were studied. Two carbon materials were used for the electrochemical tests: soft carbon made from defluorination of graphite fluoride, and t...

The tungsten trioxides and their alkali-metal-intercalated products M{sub x}WO{sub 3+{delta}} have attracted considerable attention over the years because of the variety of crystalline structures they can take up and their electrochemical and electronic properties, which make them attractive as active electrodes in electrochromic displays and as catalysts. ...

Cointercalation of propylene carbonate (PC) into layered materials intercalated with lithium can b reduced with concentrated electrolytes. We show electrochemical and x-ray diffraction evidence for this reduction in Li/ZrS/sub 2/ cells with LiAsF/sub 6//PC electrolyte.

Thin film insertion cathode have been obtained in the In-Se system and Hall mobility up to 50 sq cm have been measured on annealed films. Electrochemical lithium intercalation has been performed and shows that a plateau appears at 1.8V. The redox stabilit...

: Vanadium pentoxide film; Electrophoretic deposition; Lithium ion intercalation; Electrochemical property/electrochromic properties of vanadium pentoxide films by sol electrophoretic deposition Ying Wang, Guozhong Cao Department such as lithium ions and are used for devices such as batteries, fuel cells, and electrochromic displays [1

The behavior of petroleum coke (Conoco) was examined in a propylene carbonate/ethylene carbonate/dimethylcarbonate (1/1/3 volume) mixture with LiCF{sub 3}SO{sub 3} as the lithium salt. The thermodynamics and the kinetics of the lithium intercalation/deintercalation processes in the carbon matrix were investigated by galvanostatic curves and by cyclic voltammetry. X-ray ...

-Known: LiTiS2 and LiCoO2 Forefront and More Complex: Manganese Oxides - mixed metals/stability Vanadium Reacts very Efficiently and Reversibly with Lithium Soft lattice (covalent) allows rapid diffusion of lithium - Data at 10 mA/cm2 #12;Titanium Stoichiometry Critical to Li ion Mobility 10% excess titanium

Attention is given to a novel method for the achievement of high electro-chemical reversibility in Li-based nonaqueous cells, using a liquid negative electrode that consists of Li dissolved in liquid ammonia as a solvated electron Li electrode. The containment of this liquid negative active material from direct contact to a liquid nonaqueous electrolyte in the positive ...

Nor-?-lapachone has shown several biological properties. Regarding cytotoxic activity against cancer cell lines, it has been recognized as an important prototype. However, quinonoid drugs present a major challenge because of their toxicity. In this study, we evaluated the cytotoxicity and genetic toxicity of nor-?-lapachone in human lymphocytes and HL-60 leukemia cells and murine V79 fibroblasts, ...

Layered double hydroxides (LDHs), also known as hydrotalcite-like anionic clays, have been investigated widely as promising electrochemical active materials. Due to the inherently weak conductivity, the electrochemical properties of LDHs were improved typically by utilization of either functional molecules intercalated between LDH ...

This study describes a process for water treatment by continuous adsorption and electrochemical regeneration using an air-lift reactor. The process is based on the adsorption of dissolved organic pollutants onto an adsorbent material (a graphite intercalation compound, Nyex(�)1000) and subsequent electrochemical regeneration of the ...

The crystal structure and magnetic properties of layered Fe0.5TiS2 - x Se x (0 ? x ? 2) compounds intercalated by iron atoms have been investigated. It has been shown that the substitution of selenium for sulfur is accompanied by an increase in the unit cell volume, a transition from the ferromagnetic to antiferromagnetic behavior, and a nonmonotonic ...

A new layered-structure compound, BC2N, has been synthesized by a vapor-phase reaction of CH3CN and BCl. The electrochemical behavior of BC2N as a negative electrode matrix of a rechargeable lithium battery was investigated in organic electrolyte solutions containing lithium salts. Cyclic voltammetry and X ray diffraction analysis showed that the ...

The interaction of drugs with DNA is an important aspect in pharmacology. In recent years, many important technological advances have been made to develop new techniques to monitor biorecognition and biointeraction on solid devices. The interaction between DNA and drugs can cause chemical and conformational modifications and, thus, variation of the electrochemical properties ...

Mesophase pitch (MP)/exfoliated graphite nanoplatelets (GNPs) nanocomposite has been prepared by an efficient method with an initiation of graphite intercalation compounds (GIC). X-ray diffraction, optical microscopy, high-resolution transmission electron microscopy and scanning electron microscopy analysis techniques are used to characterize the samples. It is observed that ...

Amorphous carbon nanotubes (ACNTs) showed the different structure with crystal carbon nanotubes, such as single-walled and multi-walled carbon nanotubes due to their unique tube walls. The tube wall of ACNTs is comprised of many single layer graphene sheets which present long-distance disorder and short-distance order. Herein, we mainly studied the electrochemical property of ...

The electrochemical intercalation of Li into graphite has been studied in Li/polymer electrolyte/graphite cells using an in situ X-ray diffraction (XRD) technique. In cells containing an electrolyte of PAN (polyacrylonitrile)-EC (ethylene carbonate)-LiPF{sub 6}, a minor irreversible reduction of the electrolyte is observed only during the first discharge. ...