| 柠檬酸溶胶-凝胶法合成嵌锂电极材料 |
| |
| 引用本文： | 单忠强,位辰先,陈政,吴峰,高学平.柠檬酸溶胶-凝胶法合成嵌锂电极材料[J].南开大学学报,2006,39(2):89-93. |
| |
| 作者姓名： | 单忠强 位辰先 陈政 吴峰 高学平 |
| |
| 作者单位： | 天津大学化工学院 天津300072(单忠强，位辰先，陈政)，北京理工大学环境与化工学院 北京100081(吴峰)，南开大学新能源材料化学研究所 天津300071(高学平) |
| |
| 基金项目： | 国家高技术研究发展计划(863计划);科技部科研项目 |
| |
| 摘 要： | 选用金属醋酸盐和柠檬酸配体,采用溶胶-凝胶法合成出锂离子电池正极材料L i1.05M n2O4.通过优化溶液的pH值和合成温度,包括预烧温度和灼烧温度,制备出纳米尺寸颗粒占13.05%的样品.X射线衍射分析表明,样品为尖晶石型结构,晶格常数a=0.823 nm.扣式电池充放电性能测试的结果表明,合成的L i1.05M n2O4样品具有良好的充放电循环性能,0.1 C充放电循环100次容量损失仅为4.5%.
|
| 关 键 词： | 锂离子电池 溶胶-凝胶法 充放电循环性能 |
| 文章编号： | 0465-7942(2006)02-0089-05 |
| 收稿时间： | 06 20 2005 12:00AM |
| 修稿时间： | 2005年6月20日 |
Lithium-inserting Electrode Materials Synthesized by Citric Acid Sol-gel Method |
| |
| Shan Zhongqiang,Wei Chenxian,Chen Zheng,Wu Feng,Gao Xueping.Lithium-inserting Electrode Materials Synthesized by Citric Acid Sol-gel Method[J].Acta Scientiarum Naturalium University Nankaiensis,2006,39(2):89-93. |
| |
| Authors: | Shan Zhongqiang Wei Chenxian Chen Zheng Wu Feng Gao Xueping |
| |
| Institution: | 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2. School of Environmental and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China; 3. Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China |
| |
| Abstract: | Li_(1.05)Mn_2O_4 samples were synthesized from aqueous solutions of metal acetates containing citric acid as a chelating agent by a sol-gel method.The synthetic conditions,such as pH conditions of chelating solutions,pretreated and calcination temperatures,were studied.X-ray diffraction analysis showed that Li_(1.05)Mn_2O_4 sample prepared under optimal conditions had a spinel structure with a crystal lattice constant of 0.823 nm.The size analysis showed that the nanoparticles were about 13.05 % by volume.The charge-discharge measurements of coin batteries indicated better cyclic performance of the sample.The capacity loss after the 100th charge-discharge cycle at 0.1 C was only 4.5 %. |
| |
| Keywords: | Li1-05Mn2O4 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
