Tuning Cobalt-Free Nickel-Rich Layered LiNi0.9Mn0.1O2Cathode Material for Lithium-Ion Batteries

被引：24

作者：

Ma, Rui ^{[1
]}

Zhao, Zhikun ^{[1
]}

Fu, Jiale ^{[1
]}

Lv, Haijian ^{[1
]}

Li, Chunli ^{[1
]}

Wu, Borong ^{[1
]}

Mu, Daobin ^{[1
]}

Wu, Feng ^{[1
]}

机构：

[1] Beijing Inst Technol, Beijing Key Lab Environm Sci & Engn, Sch Mat Sci & Engn, Beijing, Peoples R China

来源：

CHEMELECTROCHEM | 2020年 / 7卷 / 12期

基金：

对外科技合作项目（国际科技项目）;

关键词：

nickel-rich materials; cobalt-free materials; cathodes; LiNi0; 9Mn0; 1O(2); lithium-ion batteries; NANOSTRUCTURED CATHODE MATERIALS; X-RAY-DIFFRACTION; ELECTROCHEMICAL PROPERTIES; PERFORMANCE; OXIDES;

D O I：

10.1002/celc.202000443

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

As the demand for high-energy-density batteries becomes more and more urgent, cathode materials of high-energy lithium-ion batteries have received widespread attention. LiNixCoyMn1-x-yO2(NCM) ternary materials with high nickel and low cobalt content as well as a high cut-off voltage are continually pursued. Here, a nickel-rich cobalt-free cathode material, LiNi0.9Mn0.1O2, was synthesized by using a co-precipitation method to achieve a stable structure and excellent electrochemical performance. It shows a discharge specific capacity of 190 mAhg(-1)in the first cycle at a rate of 0.2 C, and a capacity retention of 93 % over 150 cycles at 2.7-4.3 V. It also exhibits excellent electrochemical performance under high cut-off voltage. The initial discharge specific capacity reaches 197.5 mAhg(-1)at 0.2 C within 2.7 to 4.5 V, and the capacity retains 188.9 mAhg(-1)after 100 cycles. The work provides an alternative cathode material for high-energy-density and cost-effective lithium-ion batteries.

引用

页码：2637 / 2642

页数：6

共 40 条

[1] Future generations of cathode materials: an automotive industry perspective [J].