| 添加剂对LiMn2O4锂离子电池性能的影响 |
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| 引用本文： | 刘云建,李新海,郭华军,沈湘黔.添加剂对LiMn2O4锂离子电池性能的影响[J].电池工业,2010,15(4):197-201. |
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| 作者姓名： | 刘云建 李新海 郭华军 沈湘黔 |
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| 作者单位： | 江苏大学材料科学与工程学院,江苏镇江,212013;中南大学冶金科学与工程学院,湖南长沙,410083;中南大学冶金科学与工程学院,湖南长沙,410083;江苏大学材料科学与工程学院,江苏镇江,212013 |
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| 基金项目： | 江苏大学高级人才启动基金 |
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| 摘 要： | 采用商品化的LiMn2O4和石墨作为正负极材料制作锰酸锂动力电池,并利用XRD、SEM等分析手段表征了LiMn2O4原料。研究了MgO,LiF和Li2CO3添加剂对电池性能的影响。研究发现,添加2%wt的LiF能够有效地提高LiMn2O4的放电比容量和循环性能,放电比容量最高达到107.5mAh/g,100次循环后电池容量保持率为最高为93%,而纯LiMn2O4的放电比容量只有105 mAh/g,100次循环容量保持率为91.1%。研究认为,添加剂能够有效地降低电解液中的HF的含量,并且能够增强正负极表面SEI膜的致密性,减少正极材料和电解液的接触面积,进而改善了锰酸锂电池的电化学性能。
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| 关 键 词： | 锰酸锂电池 添加剂 电化学性能 |
Study on the improvement of cycling performance of manganese spinel battery |
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| LIU Yun-jian,LI Xin-hai,GUO Hua-jun,SHEN Xiang-qian.Study on the improvement of cycling performance of manganese spinel battery[J].Chinese Battery Industry,2010,15(4):197-201. |
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| Authors: | LIU Yun-jian LI Xin-hai GUO Hua-jun SHEN Xiang-qian |
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| Affiliation: | LIU Yun-jian1,2,LI Xin-hai2,GUO Hua-jun2,SHEN Xiang-qian1(1.School of Material Science and Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China,2.School of Metallurgical Science and Engineering,Central South University,Changsha,Hunan 410083,China) |
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| Abstract: | The power battery was manufactured with the commercial LiMn2O4 and graphite.Structure and morphology of the LiMn2O4 raw material were observed by XRD and SEM technique,respectively.The effects of additives such as MgO,LiF and Li2CO3 on performance were studied.The results showed that the capacity and cycling performance of LiMn2O4 electrode were improved by 2% wt LiF added.The capacity of LiMn2O4 with additive was 107.5 mAh/g and the capacity retaining was 93% after 100 cycles.While the capacity of pristine... |
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| Keywords: | LiMn2O4 battery additive electrochemical performance |
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