| 锰酸锂电池循环性能的改进 |
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| 引用本文： | 刘云建,李新海,郭华军,王志兴,胡启阳,彭文杰,杨勇,梁如福.锰酸锂电池循环性能的改进[J].中南大学学报(自然科学版),2008,39(5). |
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| 作者姓名： | 刘云建 李新海 郭华军 王志兴 胡启阳 彭文杰 杨勇 梁如福 |
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| 作者单位： | 中南大学,冶金科学与工程学院,湖南,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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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电池,并利用XRD和SEM表征LiMn2O4原料的结构和形貌.研究不同正负极料量比对电池性能的影响,对各个料量比电池循环之后的正极进行XRD分析.研究结果表明:LiMn2O4容量随着正负极料量比的增大而增大,最高达到106 mA·h/g,而电池的循环性能随着正负极料量比的减小而改善,正负极料量比为2.35时,170次循环后电池容量保持率为87.3%,并且在循环过程中,电池循环性能随着循环的进行而改善;循环后的LiMn2O4晶胞发生收缩,LiMn2O4的结构稳定性提高,并且其晶胞收缩程度随着正负极料量比的减小而增加.
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| 关 键 词： | 锰酸锂 极片设计 循环性能 晶体结构 |
Improvement of cycling performance of manganese spinel battery |
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| LIU Yun-jian,LI Xin-hai,GUO Hua-jun,WANG Zhi-xing,HU Qi-yang,PENG Wen-jie,YANG Yong,LIANG Ru-fu.Improvement of cycling performance of manganese spinel battery[J].Journal of Central South University:Science and Technology,2008,39(5). |
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| Authors: | LIU Yun-jian LI Xin-hai GUO Hua-jun WANG Zhi-xing HU Qi-yang PENG Wen-jie YANG Yong LIANG Ru-fu |
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| Institution: | LIU Yun-jian,LI Xin-hai,GUO Hua-jun,WANG Zhi-xing,HU Qi-yang,PENG Wen-jie,YANG Yong,LIANG Ru-fu (School of Metallurgical Science , Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | The 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 effect of mass ratio of cathode to anode on the performance of battery was studied.The cathodes of battery with different mass ratios of cathode to anode were characterized by XRD technique.The result shows that the capacity of LiMn2O4 electrode rises with the increase of the mass ratio of anode to cathode,and the highest capacity ... |
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| Keywords: | LiMn2O4 electrode design cyclic performance crystal lattice |
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