溶胶凝胶法制备LiFePO_4正极材料  

Sol-Gel Synthesis of LiFePO_4 Cathode

作　　者：惠乐[1] 唐子龙[1] 罗绍华[1] 张中太[1] 

机构地区：[1]清华大学材料系新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《化学进展》2007年第10期1460-1466,共7页Progress in Chemistry

基　　金：国家自然科学基金项目(No.50472005;50372003)资助

摘　　要：本文介绍了溶胶凝胶法制备LiFePO4正极材料的基本原理及近几年这一领域的研究进展。对碳包覆活性物质、掺杂和多形态纳米化制备技术3种改性方法以及它们对LiFePO4正极材料性能的提高进行了总结,认为取得的成效主要有:容量得到提高、颗粒尺寸和碳含量有所减小以及热处理过程所需时间大大缩短。文中进一步指出目前存在的若干问题,包括对制备过程缺乏深入认识,产品成本环境污染。最后对其商业化的可能性进行了讨论。The principle of sol-gel synthesis of LiFePO4 cathode materials is introduced. The progress of sol-gel synthesis of LiFePO4 in recent years is emphasized . Three modification strategies including carbon-coating, doping and nano techniques, as well as their modification of the performances of LiFePO4 cathode materials are summarized. As a result, capacity enhancement, the decrease in particle size and carbon content, and the obvious treatment are achieved. The problems related to deeper understanding of the synthesis procedure, environmental pollution are pointed out. Finally, the possibility of its commercialization is discussed shortening production of heat cost and

关 键 词：溶胶凝胶法 磷酸铁锂 锂离子电池 正极材料 

分 类 号：O646.54[理学—物理化学] TM911[理学—化学]