Graphite Intercalation Compounds (GICs): A New Type of Promising Anode Material for Lithium-Ion Batteries

A new type of nanostructured material that combines the advantages of metal oxides, metal selenides, and graphitic carbon (GC) as an anode material for lithium-ion batteries is studied.

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Estimation of Reduced Partition Function Ratios of Lithium-Graphite Intercalation Compounds by Density Functional Theory

Zeitschrift für Naturforschung A ◽

10.5560/zna.2013-0085 ◽

2014 ◽

Vol 69 (3-4) ◽

pp. 122-128 ◽

Cited By ~ 1

Author(s):

Kunihiko Sato ◽

Shun Saito ◽

Satoshi Yanase ◽

Takao Oi

Keyword(s):

Partition Function ◽

Density Functional ◽

Ethylene Carbonate ◽

Lithium Ion ◽

Intercalation Compounds ◽

Lithium Isotope ◽

Graphite Intercalation Compounds ◽

Isotope Exchange Reaction ◽

Graphite Intercalation ◽

Lithium Graphite

The reduced partition function ratio (RPFR) of lithium in lithium-graphite intercalation compounds (Li-GICs) was evaluated at the UB3LYP=6-311G(d) level of theory. The partition functions were written in the usual rigid-rotor harmonic oscillator approximation.With a C24H12 coronene molecule as the model of graphene, lithium-coronene sandwich, and club sandwich compounds were considered as models of Li-GICs. The estimated value of the 6Li-to-7Li RPFR was 1.0402 at 25 °C, which yielded 1.034 as the value of the equilibrium constant, K, of the lithium isotope exchange reaction between a lithium ion in an ethylene carbonate=ethylmethyl carbonate mixed solvent and a lithium atom in interlayer space of graphite. The estimated value of K was larger than the experimental value of 1.025. The unsatisfactory agreement between the estimated and experimental K values suggested that larger molecules should be used as models of graphene and that the vibrational anharmonicity should also be taken into consideration.

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Synthesis of New Type Graphite Intercalation Compounds with Ferric Chloride in Chloroform

TANSO ◽

10.7209/tanso.1989.15 ◽

1989 ◽

Vol 1989 (136) ◽

pp. 15-20 ◽

Cited By ~ 2

Author(s):

M. Inagaki ◽

Z.X. Bao ◽

Y. Soneda

Keyword(s):

Ferric Chloride ◽

Intercalation Compounds ◽

Graphite Intercalation Compounds ◽

Graphite Intercalation ◽

New Type

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Ball-milling: an alternative way for the preparation of anodes for lithium-ion batteries

MRS Proceedings ◽

10.1557/proc-756-ee8.5 ◽

2002 ◽

Vol 756 ◽

Author(s):

Daniel Guérard ◽

Raphaël Janot

Keyword(s):

Lithium Ion Batteries ◽

Ball Milling ◽

Electrochemical Behavior ◽

Magnetic Measurements ◽

Ambient Pressure ◽

Lithium Ion ◽

Intercalation Compounds ◽

Liquid Media ◽

Primary Battery ◽

Graphite Intercalation

ABSTRACTThe preparation of new anodic materials for lithium-ion batteries is possible by ball-milling within liquid media. Those powders can be as diverse as: highly anisometric graphite particles (geometrical anisotropy around 100), graphite-maghemite (γ Fe2O3) composites and graphite-intercalation compounds with high lithium contents (e.g. LiC3 is obtained by ball-milling of Li + 2C powders). These phases are the first superdense graphite-lithium compounds stable under ambient pressure and lead to a capacity of 1 Ah/g as primary battery and 370 mAh/g as secondary one. The synthesis and characterizationschemical analysis, XRD, pycnometry, TEM, SEM, 7Li NMR, magnetic measurements) are presented for each materials as well as the electrochemical behavior.

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