Synthesis and electrochemical performance of the high voltage cathode material Li[Li0.2Mn0.56Ni0.16Co0.08]O2 with improved rate capability

被引：189

作者：

Li, J. ^{[1
]}

Kloepsch, R. ^{[1
]}

Stan, M. C. ^{[1
]}

Nowak, S. ^{[1
]}

Kunze, M. ^{[1
]}

Winter, M. ^{[1
]}

Passerini, S. ^{[1
]}

机构：

[1] Univ Munster, Inst Phys Chem, D-48149 Munster, Germany

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 10期

关键词：

Lithium-ion battery; Cathode material; Li[Li0.2Mn0.56Ni0.16Co0.08]O-2; NMC; Cycling performance; Rate capability; LITHIUM BATTERIES M; HIGH-CAPACITY; ELECTRODES; MN; COMPLEXITY; NI; CO;

D O I：

10.1016/j.jpowsour.2011.01.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The high voltage layered Li[Li0.2Mn0.56Ni0.16Co0.08]O-2 cathode material, which is a solid solution between Li2MnO3 and LiMn0.4Ni0.4Co0.2O2, has been synthesized by co-precipitation method followed by high temperature annealing at 900 degrees C. XRD and SEM characterizations proved that the as prepared powder is constituted of small and homogenous particles (100-300 nm), which are seen to enhance the material rate capability. After the initial decay, no obvious capacity fading was observed when cycling the material at different rates. Steady-state reversible capacities of 220 mAh g(-1) at 0.2C, 190 mAh g(-1) at 1C, 155 mAh g(-1) at 5C and 110 mAh g(-1) at 20C were achieved in long-term cycle tests within the voltage cutoff limits of 2.5 and 4.8 V at 20 degrees C. 2011 Elsevier B.V. All rights reserved.

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页码：4821 / 4825

页数：5

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