Direct Synthesis of Al2O3-modified Li(Ni0.5Co0.2Mn0.3)O2 Cathode Materials for Lithium Ion Batteries

To improve the cyclic stability at high temperature and thermal stability, the spherical Al2O3-modified Li(Ni0.5Co0.2Mn0.3)O2 was synthesized by a modified co-precipitation method, and the physical and electrochemical properties were studied. The TEM images showed that Li(Ni0.5Co0.2Mn0.3)O2 was modi...

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Veröffentlicht in:武汉理工大学学报:材料科学英文版 2018, Vol.33 (1), p.97-101
Hauptverfasser: 王启岁, ZHANG Changchun, XING Junlong, YANG Maoping, XIE Jia
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container_title 武汉理工大学学报:材料科学英文版
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creator 王启岁
ZHANG Changchun
XING Junlong
YANG Maoping
XIE Jia
description To improve the cyclic stability at high temperature and thermal stability, the spherical Al2O3-modified Li(Ni0.5Co0.2Mn0.3)O2 was synthesized by a modified co-precipitation method, and the physical and electrochemical properties were studied. The TEM images showed that Li(Ni0.5Co0.2Mn0.3)O2 was modified successfully with nano-Al2O3. The discharge capacity retention of Al2O3-modified Li(Ni0.5Co0.2Mn0.3)O2 maintained about 99% after 200 cycles at high temperature(55 ℃), while that of the bare one was only 86%. Also, unlike bare Li(Ni0.5Co0.2Mn0.3)O2, the Al2O3-modified material cathode exhibited good thermal stability.
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1993-0437
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subjects Al2O3
阴极材料
锂离子电池
修改
O2
合成
热稳定性
沉淀方法
title Direct Synthesis of Al2O3-modified Li(Ni0.5Co0.2Mn0.3)O2 Cathode Materials for Lithium Ion Batteries
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