A Comparison of High Capacity xLi2MnO3•(1-x)LiMO2 (M=Ni,Co,Mn) Cathodes in Lithium-Ion Cells with Li4Ti5O12- and Carbon-Encapsulated Anatase TiO2 Anodes

被引：38

作者：

Kang, S. -H. ^{[1
]}

Pol, V. G. ^{[1
]}

Belharouak, I. ^{[1
]}

Thackeray, M. M. ^{[1
]}

机构：

[1] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2010年 / 157卷 / 03期

关键词：

carbon; electrochemical electrodes; encapsulation; lithium compounds; manganese compounds; nickel compounds; secondary cells; semiconductor materials; titanium compounds; ELECTROCHEMICAL PERFORMANCE; ANOMALOUS CAPACITY; BATTERY SYSTEM; ELECTRODES; LI; MN; NI; NANOCRYSTALS; TEMPERATURE; REACTIVITY;

D O I：

10.1149/1.3274205

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical performance of high capacity xLi(2)MnO(3)center dot(1-x)LiMO2 (M=Ni,Co,Mn) cathodes was evaluated in a lithium-ion cell configuration against Li4Ti5O12- and carbon-encapsulated anatase, TiO2-C, anodes. The electrode composition 0.5Li(2)MnO(3)center dot 0.5LiNi(0.44)Mn(0.31)Co(0.25)O(2) that provides a rechargeable capacity of 250 mAh/g was selected for the study. Li4Ti5O12/0.5Li(2)MnO(3)center dot 0.5LiNi(0.44)Mn(0.31)Co(0.25)O(2) cells operate with excellent reversibility, offering a superior energy density to Li4Ti5O12/Li1+xMn2-xO4 (spinel/spinel) cells that are being developed for powering hybrid and plug-in hybrid (10 mile) vehicles. Carbon encapsulation of anatase TiO2 did not improve the stability or cycle life of LixTiO2 electrodes for x>0.5; TiO2-C/0.5Li(2)MnO(3)center dot 0.5LiNi(0.44)Mn(0.31)Co(0.25)O(2) cells steadily lose capacity on electrochemical cycling.

引用

页码：A267 / A271

页数：5

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