采用溶胶.凝胶法制备了纳米SnO2粉末,研究了水性粘结剂对SnO2电化学性能的影响.使用6%的水性粘结荆LAl33,SnO2的首次可逆比容量为621 mAh/g,约比使用PVDF时大2倍.改变LAl33的含量、电流密度和电压范围,能提高SnO2的循环性能.当LAl33的含量为10%时,15次循环后,SnO2的平均容量保持率为67.7%;降低上限截止电压有助于提高SnO2的循环性能,当电压范围为0~0.8 V时,20次循环后的容量保持率高达99.7%.
作 者:杨峰 陈立宝 李雅琳 王太宏 YANG Feng CHEN Li-bao LI Ya-lin WANG Tai-hong
作者单位:杨峰,陈立宝,王太宏,YANG Feng,CHEN Li-bao,WANG Tai-hong(湖南大学微纳技术研究中心,湖南,长沙,410082)
李雅琳,LI Ya-lin(湖南大学电池与高分子材料研究所,湖南,长沙,410082)
刊 名:电池 ISTIC PKU
英文刊名:BATTERY BIMONTHLY
年,卷(期):2008 38(2)
分类号:TM912.9
关键词:SnO2 锂离子电池 水性粘结剂 电化学性能
机标分类号:TM9 U66
机标关键词:水性粘结剂纳米电化学性能循环性能电压范围可逆比容量保持率截止电压含量电流密度上限溶胶凝胶粉末法制
基金项目:
DOI:
参考文献(10条)
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