掺铬对LiNi（0.5）Mn（1.5）O4正极材料性能的影响
Saved in:
| Published in: | 中国有色金属学报：英文版 no. 7; pp. 2066 - 2070 |
|---|---|
| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
|
| Subjects: | |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Bibliography: | 43-1239/TG In order to improve the cycle and rate performance of LiNi0.5Mn1.5O4, LiCr2 Ni0.5 Mn1.5 O （0≤Y≤0.15） particles were Y -Y -Y 4 synthesized by the sucrose-aided combustion method. The effects of Cr doping in LiNi0.5Mn1.5O4 on the structures and electrochemical properties were investigated. The samples were characterized by X-ray diffractometry （XRD）, scanning electron microscopy （SEM）, cyclic voltammetry （CV）, galvanostatic charge-discharge test and electrochemical impedance spectrum （EIS）. The results indicate that the LiCr2 Ni0.5 Mn1.5 O possess a spinel structure and small particle size, and LiCr0.2Ni0.4Mn1.4O4exhibits Y -Y -Y 4 the best cyclic and rate performance. It can deliver discharge capacities of 143 and 104 mA·h/g at 1C and 10C, respectively, with good capacity retention of 96.5% at 1C after 50 cycles. Wei WANG1,Heng LIU1,Yan WANG2,Chao GAO1,Jun ZHANG1 （1.College of Materials Science and Engineering,Sichuan University,Chengdu 610065,China; 2.College of Computer Science and Technology,Southwest University for Nationalities,Chengdu 610041,China） lithium ion batteries; cathode material; spinel; Cr doping; lithium nickel manganese oxide |
|---|---|
| ISSN: | 1003-6326 |