典型文献
Spinel LiMn2O4 integrated with coating and doping by Sn self-segregation
文献摘要：
The development of high-performance and low-cost cathode materials is of great significance for the progress in lithium-ion batter-ies. The use of Co and even Ni is not conducive to the sustainable and healthy development of the power battery industry owing to their high cost and limited resources. Here, we report LiMn2O4 integrated with coating and doping by Sn self-segregation. Auger electron energy spec-trum and soft X-ray absorption spectrum show that the coating is Sn-rich LiMn2O4, with a small Sn doping in the bulk phase. The integration strategy can not only mitigate the Jahn–Teller distortion but also effectively avoid the dissolution of manganese. The as-obtained product demonstrates superior high initial capacities of 124 mAh·g?1 and 120 mAh·g?1 with the capacity retention of 91.1％ and 90.2％ at 25℃and 55℃after 50 cycles, respectively. This novel material-processing method highlights a new development direction for the progress of cathode materials for lithium-ion batteries.
文献关键词：
中图分类号：
作者姓名：
Huaifang Shang;Dingguo Xia
作者机构：
Key Laboratory of Magnetic Molecules and Magnetic Information Materials(Ministry of Education),School of Chemistry and Material Science,Shanxi Normal University,Taiyuan 030031,China;Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials,School of Materials Science and Engineering,Peking University,Beijing 100871,China
文献出处：
引用格式：
[1]Huaifang Shang;Dingguo Xia-.Spinel LiMn2O4 integrated with coating and doping by Sn self-segregation)[J].矿物冶金与材料学报,2022(05):909-916
A类：
B类：
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AB值：
0.577183
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