| 表面包覆对富锂锰基材料循环稳定性影响研究 |
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| 引用本文： | 殷春梅,郭忻,周春仙,夏朝阳,廖达前,习小明,肖可颂,陈晓青. 表面包覆对富锂锰基材料循环稳定性影响研究[J]. 矿冶工程, 2016, 36(3): 94-97. DOI: 10.3969/j.issn.0253-6099.2016.03.025 |
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| 作者姓名： | 殷春梅 郭忻 周春仙 夏朝阳 廖达前 习小明 肖可颂 陈晓青 |
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| 作者单位： | 长沙矿冶研究院有限责任公司, 湖南 长沙 410012 |
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| 基金项目： | 转制科研院所创新能力专项经费(2014EG113173)；国家自然科学基金(51474037) |
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| 摘 要： | 采用TiO2和Al2O3对富锂锰基材料Li[Li0.2Ni0.13Co0.13Mn0.54]O2进行表面包覆改性, 研究了表面包覆对富锂锰基材料循环过程中放电容量和电压的影响。结果表明, Al2O3包覆富锂锰基材料的放电电压下降较缓慢, 而TiO2包覆富锂锰基材料的放电容量下降较缓慢; 表面包覆后富锂锰基材料循环稳定性的变化与材料微观结构形貌相关性较小。
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| 关 键 词： | 锂离子电池 正极材料 富锂锰基材料 TiO2 Al2O3 表面包覆 循环稳定性 |
| 收稿时间： | 2015-12-23 |
Impacts of Surface Coating on Cycle Stability of Li-rich Manganese-based Material |
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| YIN Chun-mei,GUO Xin,ZHOU Chun-xian,XIA Chao-yang,LIAO Da-qian,XI Xiao-ming,XIAO Ke-song,CHEN Xiao-qing. Impacts of Surface Coating on Cycle Stability of Li-rich Manganese-based Material[J]. Mining and Metallurgical Engineering, 2016, 36(3): 94-97. DOI: 10.3969/j.issn.0253-6099.2016.03.025 |
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| Authors: | YIN Chun-mei GUO Xin ZHOU Chun-xian XIA Chao-yang LIAO Da-qian XI Xiao-ming XIAO Ke-song CHEN Xiao-qing |
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| Affiliation: | Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China |
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| Abstract: | The Li-rich manganese-based material Li[Li0.2Ni0.13Co0.13Mn0.54]O2 was modified by being coated with TiO2 or Al2O3. The impacts of the coatings on the discharge capacity and voltage drop of the material during cycle process were studied. The results showed that the discharge voltage of the material dropped slowly when coated with Al2O3, while the discharge capacity decreased slowly with the TiO2 coating. The change in cycle stability was little related to the microstructure and morphology of the material. |
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| Keywords: | lithium ion battery cathode material Li-rich manganese-based material TiO2 Al2 O3 surface coating cycle stability |
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