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锂离子电池近期研究专辑 (厦门大学 杨勇教授主编)

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
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  • 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

  网络出版日期: 2013-12-23

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
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  • 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 date: 2013-03-27

  Revised date: 2013-05-29

  Online published: 2013-12-23

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%.

本文引用格式

谭帅 , 孙旦 , 王海燕 , 侯天丽 , 肖仲星 , 唐有根 . 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[J]. 电化学, 2013 , 19(6) : 579 -584 . DOI: 10.13208/j.electrochem.130353

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%.
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