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| Al离子掺杂对LiNi0.5Mn1.5O4高电压材料性能的影响 | |
| 引用本文： | 吴宁宁,宋文娥,安富强,刘建红,田文怀.Al离子掺杂对LiNi0.5Mn1.5O4高电压材料性能的影响[J].材料热处理学报,2012,33(4):12-16. |
| 作者姓名： | 吴宁宁 宋文娥 安富强 刘建红 田文怀 |
| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京100083／中信国安盟固利动力科技有限公司,北京102200 2. 中信国安盟固利动力科技有限公司,北京,102200 3. 北京科技大学材料科学与工程学院,北京,100083 |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| 摘 要： | 用固相法合成了Al掺杂的高电压LiNi0.5Mn1.5-xAlxO4材料,研究了材料晶胞参数、材料可逆比容量、放电电压及循环性能随掺Al量的变化规律。结果表明,随着掺Al量的增加,材料的可逆比容量在逐渐减小;当Al掺杂量为0.06(LiNi0.5Mn1.44Al0.06O4)时,样品具有最佳的循环性能,100周的容量保持率在97%左右。与此同时,使用以Al掺杂量为0.06的样品为正极,石墨为负极组装的全电池显示了良好的循环性能。 |
| 关 键 词： | 固相法 放电电压 Al掺杂量 可逆比容量 |
Effect of Al doping on performance of LiNi_（0.5）Mn_（1.5）O_4 high volt materials |
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| WU Ning-ning,SONG Wen-e,AN Fu-qiang,LIU Jian-hong,TIAN Wen-huai.Effect of Al doping on performance of LiNi_（0.5）Mn_（1.5）O_4 high volt materials[J].Transactions of Materials and Heat Treatment,2012,33(4):12-16. | |
| Authors: | WU Ning-ning SONG Wen-e AN Fu-qiang LIU Jian-hong TIAN Wen-huai |
| Affiliation: | 1(1.School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083, China;2.CITIC Guoan Mengguli Power Science & Technology Co Ltd,Beijing 102200,China) |
| Abstract: | Al doped LiNi0.5Mn1.5-xAlxO4 samples were synthesized by a solid-state reaction method.The influence of Al-dopant content on the lattice parameter,reversible capacity,discharge voltage and cycle behavior of LiNi0.5Mn1.5-xAlxO4 samples was studied.The results show that the discharge capacity decreases with the Al content increasing.Among the various compositions investigated,the LiNi0.5Mn1.44Al0.06O4 sample with x=0.06 presents the best cycle behavior with 97% capacity retention over 100 cycles.In addition,the LiNi0.5Mn1.44Al0.06O4 sample also exhibits excellent cyclability when using graphite as anode. |
| Keywords: | solid state reaction method discharge voltage Al doping reversible capacity |
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