欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 2013, Vol. 19 ›› Issue (6): 579-584.  doi: 10.13208/j.electrochem.130353

• 锂离子电池近期研究专辑 (厦门大学 杨勇教授主编) • 上一篇    下一篇

片状LiV3O8软模板辅助溶胶凝胶法制备及其在水系锂离子电池中的性能研究

谭帅,孙旦,王海燕*,侯天丽,肖仲星,唐有根   

  1. 中南大学 有色金属资源化学教育部重点实验室,化学化工学院 湖南 长沙 410083
  • 收稿日期:2013-03-27 修回日期:2013-05-29 出版日期:2013-12-28 发布日期:2013-12-23
  • 通讯作者: 王海燕 E-mail:wanghy419@126.com
  • 基金资助:

    中国博士后基金(No. 2013M530356)、有色金属资源化学教育部重点实验室开放基金(No. 2012KF01)、中南大学科研启动基金及中南大学贵重仪器设备开放基金(No. CSUZC201303)资助

Preparation and Electrochemical Properties of Flake-like LiV3O8 by Soft Template Assisted Sol-gel Method as Anode Material for Aqueous Li-ion Battery

TAN Shuai, SUN Dan, WANG Hai-yan*, HOU Tian-li, XIAO Zhong-Xing, TANG You-gen   

  1. Key Laboratory of Resources Chemistry of Nonferrous Metals, Ministry of Education, School of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China
  • Received:2013-03-27 Revised:2013-05-29 Published:2013-12-28 Online:2013-12-23
  • Contact: WANG Hai-yan E-mail:wanghy419@126.com

摘要: 负极材料是目前制约水溶液锂离子电池的关键. 采用十二烷基苯磺酸钠软模板辅助的溶胶凝胶法制备了片状LiV3O8材料. XRD和SEM测试表明目标材料为纯相的片状结构LiV3O8,属单斜晶系,P21/m点群. 组装LiMn2O4//Li2SO4//LiV3O8水溶液锂离子电池,测试发现片状LiV3O8具有较高的倍率性能和较好的循环寿命. 在0.1C下,LiV3O8的放电比容量为154 mAh.g-1. 在1C、5C和10C时,放电容量分别为134 mAh.g-1、78 mAh.g-1和54 mAh.g-1. 1C下前170周循环的容量保持率约60%.

关键词: 水系锂离子电池, LiV3O8, 溶胶-凝胶法, 电化学性能

Abstract: Anode material has become the key issue for restricting the development of aqueous lithium ion battery (ALIB). Flake-like LiV3O8 materials were synthesized by sol-gel method using sodium dodecyl benzene sulfonate (SDBS) as a template. The XRD and SEM results showed that as-prepared flake-like LiV3O8 was of high purity with monoclinic system and P21/m space group. LiMn2O4//Li2SO4//LiV3O8 ALIB was assembled and tested. As observed, the flake-like LiV3O8 here exhibited good high-rate performance and cycling stability. A high discharge capacity of 154 mAh.g-1 (based on the mass of negative electrode) was delivered at 0.1C (1C=300 mA.g-1). At 1C, 5C and 10C rates, the reversible discharge capacities of 134 mAh.g-1, 78 mAh.g-1 and 54 mAh.g-1 were retained, respectively. More importantly, the capacity retention after 170 cycles at 1C was about 60%.

Key words: aqueous Li-ion battery, LiV3O8, sol-gel method, electrochemical properties

中图分类号: