Sn/NCNF的制备及其锂电性能研究
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- 英文论文题名：Preparation of Sn/NCNF composites and its application on lithium batteries
- 论文作者：徐祥东 ; 范磊 ; 郭荣
- 英文论文作者：XiangDong Xu ; Lei Fan ; Rong Guo ; Chemistry and Chemical Engineering ; Yangzhou University
- 年：2016
- 作者机构：扬州大学化学化工学院;
- 论文关键词：静电纺丝 ; Sn/NCNF ; 比容量
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：TQ342.94
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：129k
- 原文格式：D
- 会议级别：全国
摘要
锡负极材料在嵌锂脱锂过程中存在巨大的体积膨胀变化,且材料的导电性较差,因此在储能领域的应用中存在诸多限制。本文利用SnO_2/SiO_2与PAN、PVP进行混合静电纺丝。经高温炭化过程SnO_2被碳还原为Sn纳米粒子。最后再用碱溶液将SiO_2刻蚀除去,得到Sn/NCNF复合纤维。对其形貌、锂电性能等进行研究。结果表明,SnO_2/SiO_2与PAN/PVP质量比为0.5:1时所得产物具有最佳的循环稳定性及比容量。Sn/NCNF复合纤维在电流密度为500 mA g~(-1)时,平均比容量为400 mAh g~(-1)。
The tin anode material has huge volume expansion,poor conductivity,so limits its application in lithium batteries.In this paper,the SnO_2/SiO_2 and PAN,PVP mixed fiber was prepared by electrospinning method.After high temperature carbonization process,SnO_2 is reduced to Sn nanoparticles.Finally,the SiO_2 was removed by etching with an alkaline solution to obtain Sn/NCNF composite fiber.And the relationship between the morphology and energy storage properties was investigated.The results showed that the Sn/NCNF composite fiber has the best cycling stability and specific capacity prepared when the SnO_2/SiO_2 and PAN/PVP weight ratio is0.5:1.The average specific capacity was 400 mAh g~(-1) at the current density of 500 mA g~(-1).
The tin anode material has huge volume expansion,poor conductivity,so limits its application in lithium batteries.In this paper,the SnO_2/SiO_2 and PAN,PVP mixed fiber was prepared by electrospinning method.After high temperature carbonization process,SnO_2 is reduced to Sn nanoparticles.Finally,the SiO_2 was removed by etching with an alkaline solution to obtain Sn/NCNF composite fiber.And the relationship between the morphology and energy storage properties was investigated.The results showed that the Sn/NCNF composite fiber has the best cycling stability and specific capacity prepared when the SnO_2/SiO_2 and PAN/PVP weight ratio is0.5:1.The average specific capacity was 400 mAh g~(-1) at the current density of 500 mA g~(-1).
引文
[1]Hong Y J,Yun C K.Journal of the Chemical Society,2015,11(18):2157-2163.
[2]Ren J,He X,Wang K,et al.Ionics,2010,16(6):503-507.
[2]Ren J,He X,Wang K,et al.Ionics,2010,16(6):503-507.