Search Results - "YAZAMI, R"

Physical characteristics and rate performance of (CF x ) n (0.33 < x < 0.66) in lithium batteries by Lam, P., Yazami, R.

“…Sub-fluorinated graphite fluorides (CF x ) n compounds, 0.33 < x < 0.63 were prepared from natural graphite and characterized by TGA, SEM-EDX and XRD. Their…”
Get full text

Fluorinated carbon nanofibres for high energy and high power densities primary lithium batteries by Yazami, R., Hamwi, A., Guérin, K., Ozawa, Y., Dubois, M., Giraudet, J., Masin, F.

“…The electrochemical performances of fluorinated carbon nanofibres have been tested for a use as cathode material in primary lithium battery using LiBF 4 PC:DME…”
Get full text

The entropy and enthalpy of lithium intercalation into graphite by Reynier, Y, Yazami, R, Fultz, B

“…Measurements of open-circuit voltages (OCV) in half-cells with graphite electrodes were used to obtain the entropy and enthalpy of lithium intercalation into…”
Get full text

Mechanism of self-discharge in graphite–lithium anode by Yazami, Rachid, Reynier, Yvan F

“…In order to evaluate the anode contribution to the lithium-ion battery self-discharge, three electrode coin cells composed of metallic lithium as reference and…”
Get full text

Reactivity of Carbon Nanofibers with Fluorine Gas by Chamssedine, F, Dubois, M, Guérin, K, Giraudet, J, Masin, F, Ivanov, D. A, Vidal, L, Yazami, R, Hamwi, A

“…The present study highlights the reactivity of carbon nanofibers (CNFs) with fluorine gas. Highly purified and graphitized CNFs were treated under a stream of…”
Get full text

Evolution of lithiation thermodynamics with the graphitization of carbons by Reynier, Y., Yazami, R., Fultz, B., Barsukov, I.

“…Instrumentation was developed to study the thermodynamics of lithium intercalation in cokes that were heat-treated at different temperatures. The method…”
Get full text

A transmission electron microscopy study of cycled LiCoO2 by Gabrisch, H, Yazami, R, Fultz, B

“…A sample of LiCoO2 was prepared as a cathode for a lithium battery, and subjected to a large number of charge/discharge cycles that induced an irreversible…”
Get full text

First lithiation and charge/discharge cycles of graphite materials, investigated by electrochemical impedance spectroscopy by Holzapfel, M., Martinent, A., Alloin, F., Le Gorrec, B., Yazami, R., Montella, C.

“…In this study graphite has been characterised by electrochemical impedance spectroscopy (EIS) using a three electrode coin cell. The initial lithiation shows…”
Get full text

An Electron Energy-Loss Spectrometry Study of Charge Compensation in LiNi0.8Co0.2O2 by Graetz, J, Ahn, C. C, Yazami, R, Fultz, B

“…Changes in the electronic structure of Li1 - x Ni0.8Co0.2O2 during delithiation (charge) are elucidated by changes in the O K-edge and transition-metal (TM)…”
Get full text

Mechanism of electrochemical performance decay in LiCoO2 aged at high voltage by YAZAMI, R, OZAWA, Y, GABRISCH, H, FULTZ, B

“…Electrochemical cells of LiCoO2 were charged to 4.7 V versus lithium, and held at this high voltage for various times. After this high voltage aging, the cells…”
Get full text

Phase Diagrams for Systems with Low Free Energy Variation:  A Coupled Theory/Experiments Method Applied to Li-Graphite by Filhol, J.-S, Combelles, C, Yazami, R, Doublet, M.-L

“…The paper presents a fast and efficient method to compute phase diagrams using first-principles methods and statistical physics coupled with experimental…”
Get full text

Calorimetric investigation of the reactivity of the passivation film on lithiated graphite at elevated temperatures by Holzapfel, M, Alloin, F, Yazami, R

“…Thermal storage of lithiated graphite electrodes has been performed between 40 and 90 °C for 8 h to 3 weeks. The results were compared for two separators:…”
Get full text

A kinetics study of self-discharge of spinel electrodes in Li/LixMn2O4 cells by YAZAMI, R, OZAWA, Y

“…The rate of self-discharge in lithium half-cells with the spinel-type LiMn2O4 cathode was investigated in the 60-75 deg C temperature range. The time…”
Get full text

Electronic Structure of Chemically-Delithiated LiCoO2 Studied by Electron Energy-Loss Spectrometry by Graetz, J, Hightower, A, Ahn, C. C, Yazami, R, Rez, P, Fultz, B

“…The electronic structure of chemically delithiated Li1 - x CoO2 (x = −0.02, 0.09, 0.12, 0.20, and 0.28) was investigated by electron energy-loss spectrometry…”
Get full text

Structural and Magnetic Properties of LiFePO4 and Lithium Extraction Effects by Ait-Salah, A., Dodd, J., Mauger, A., Yazami, R., Gendron, F., Julien, C. M.

“…The characterization of LiFePO4 and of materials synthesized by chemical delithiation of pure LiFePO4 using potassium peroxydisulfate is reported. X‐ray…”
Get full text

High reversible capacity carbon-lithium negative electrode in polymer electrolyte by Yazami, R., Deschamps, M.

“…Cabonaceous materials from different types are used in polymer electrolyte-based lithium cells in order to evaluate their electrochemical performance during…”
Get full text

Phonons and Thermodynamics of Unmixed and Disordered Li0.6FePO4 by Stevens, R, Dodd, J. L, Kresch, M. G, Yazami, R, Fultz, B, Ellis, B, Nazar, L. F

“…The lithium-storage material Li0.6FePO4 was studied by inelastic neutron scattering and differential scanning calorimetry. Li0.6FePO4 undergoes a…”
Get full text

Three-electrode button cell for EIS investigation of graphite electrode by Martinent, A., Le Gorrec, B., Montella, C., Yazami, R.

“…Electrochemical impedance spectroscopy (EIS) has been used to study the graphite composite electrode/electrolyte interface in a newly designed three-electrode…”
Get full text

High performance LiCoO2 positive electrode material by YAZAMI, R, LEBRUN, N, BONNEAU, M, MOLTENI, M

Get full text

Great reversible capacity of carbon lithium electrode in solid polymer electrolyte by Deschamps, M., Yazami, R.

“…The reversible storage capacity of lithium in a mesophase-derived semi-coke, heat-treated (HTT) below 700°C, was found by far exceeding the theoretical value…”
Get full text