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聚合物热解法还原制备LiFePO_4锂离子电池正极材料 被引量：2

Structure and Electrochemical Characteristics of LiFePO_4 Prepared by the Polyacrylates-Pyrolysis-Reduction Method for Li-ion Batteries
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摘要 应用聚丙烯酸盐热解还原法制备L iFePO4/C材料.经XRD和SEM分析,该材料具有橄榄石结构,结晶程度高,粒度分布均匀,粒径约100 nm.恒流充放电实验表明,该材料放电容量为138 mAh/g,循环性能良好.证实聚丙烯酸盐热解还原法是一种制备L iFePO4材料的新型实用方法. The cathode material of olivine LiFePO4 was prepared by a novel method of polyacrylate- pyrolysisreduction. XRD demonstrates that the material have the olivine structure. SEM photo shows an average particlesize of about 100 nm with a well distribution. Electrochemical test of cycling at a constant current reveals the discharge capacity of 138 mAh/g and a good cycling stability. It is a novel practicable technology to prepare LiFePO4 by using polyacrylate-pyrolysis-reducfion method.
作者 余丽红 曹余良 张晓飞 杨汉西 艾新平
机构地区 武汉大学化学与分子科学学院
出处 《电化学》 CAS CSCD 北大核心 2006年第4期442-444,共3页 Journal of Electrochemistry
基金 国家973项目基金(2002CB211800) 国家自然基金资助项目(50502025)资助
关键词 聚合物热解 LIFEPO4 锂离子电池 正极材料 Polymer-pyrolysis, LiFePO4, Li-ion batteries, Cathode material
分类号 TM912 [电气工程—电力电子与电力传动]
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参考文献7

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同被引文献40

  • 1唐昌平,应皆荣,雷敏,李维,姜长印,万春荣.控制结晶-微波碳热还原法制备高密度LiFePO_4/C[J].电化学,2006,12(2):188-190. 被引量：14
  • 2谢辉,周震涛.LiFePO_4的制备、结构与电性能研究[J].电化学,2006,12(4):378-381. 被引量：8
  • 3李婷,钱江峰,曹余良,杨汉西,艾新平.Li_(1-x)M_xFePO_4阴极材料的合成和电化学性能[J].电化学,2007,13(2):136-139. 被引量：3
  • 4Padhi A K, Nanjundaswamy K S, Goodenough J B. Phospho-olivines as positive-electrode materials for rechargeable lithium batteries[J]. Journal of the Electrochemical Society, 1997, 144(4): 1188-1194.
  • 5Ravet N, Chouinard Y, Magnan J F, et al. Electroactivity of natural and synthetic triphylite[J]. Journal of Power Sources, 2001, 97-98: 503-507.
  • 6Liu Y W, Zhang W, Wang H M, et al. Novel carbon source in manufacture of LiFePO4/C[J]. Advanced Materials Research, 2011, 189-193: 2731-2734.
  • 7Kim J K, Cheruvally G, Ahn J H. Electrochemical properties of LiFePO4/C synthesized by mechanical activation using sucrose as carbon source[J]. Journal of Solid State Electrochemistry, 2008, 12(7/8): 799-805.
  • 8Cheng F, Wan W, Tan Z, et al. High power performance of nano-LiFePO4/C cathode material synthesized via lauric acid-assisted solid-state reaction[J]. Electrochimica Acta, 2011, 56(8): 2999-3005.
  • 9Oh S W, Myung S T, Oh S M, et al. Polyvinylpyrrolidone-assisted synthesis of microscale C-LiFePO4 with high tap density as positive electrode materials for lithium batteries[J]. Electrochimica Acta, 2010, 55(3): 1193-1199.
  • 10Yu S X, Luo G E, Luo Y, et al. Physical and electrochemical properties of LiFePO4/C cathode material prepared from a new carbon source[J]. Advanced Materials Research, 2010, 160-162: 1654-1658.

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电化学
2006年 第4期

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