锂离子电池硅基负极材料的制备及电化学性能研究
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- 英文论文题名：Synthesis and Electrochemical Properties of Silicon-based Anode Materials for Lithium-ion Battery
- 论文作者：胡艳艳 ; 夏良俊 ; 曾超 ; 李亚波 ; 刘丹 ; 屈德宇
- 英文论文作者：Yanvan Hu ; Liangjun Xia ; Chao Zeng ; Yabo Li ; Dan Liu ; Deyu Qu ; Department of Chemistry ; School of Chemistry ; Chemical Engineering and Life Sciences ; Wuhan University of Technology ; State Key Laboratory of Advanced Technology for Materials Synthesis and Processing ; Wuhan University of Technology
- 年：2016
- 作者机构：武汉理工大学化生学院化学系;武汉理工大学材料复合新技术国家重点实验室;
- 论文关键词：锂离子电池 ; 硅负极材料 ; 碳材料 ; 嵌入与脱出
- 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-第三十分会：化学电源
- 语种：中文
- 分类号：TM912;TQ127.2
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十分会 ; 化学电源
- 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：111k
- 原文格式：D
- 会议级别：全国
摘要
硅基负极材料因具有高电化学容量是一种极具发展前景的锂离子电池负极材料。本文通过优化粘结剂在锂离子电池电极中的含量,对比不同导电剂和粘结剂对电池性能影响,找到获得锂离子电池硅负极材料最佳循环性能的实验条件~([1])。选用石墨烯为导电剂,能够提高电极的导电性,为锂离子的传输提供良好的通道~([2])。研究结果表明,随着石墨含量的增加,复合材料首次充放电容量均降低,而容量保持率升高~([3])。石墨含量的增加,降低了复合材料的理论比容量,而石墨的存在,缓解了在锂离子嵌入与脱出过程中的体积变化,提高复合材料的循环性能。实现硅基负极材料同时兼备高容量、长寿命、高库伦效率和倍率性能,是未来的主要发展方向。
The silicon-based anode materials are of great importance for lithium ion batteries(LIBs) because of their high capacity.In this paper,by optimizing the binder content in lithium ion battery electrodes,finding best anode materials for lithium ion battery silicon cycle performance of experimental conditions.Choose graphene as conductive agent,can improve the electrical conductivity of the electrode,provide a good channel for lithium ion transport.The increase of the content of graphite reduces the specific capacity theory of composite material,and the existence of graphite,alleviate the embedded in the lithium ion and emerge in the process of volume change,improve the cycle performance of composite materials.The predominant direction will be to promote both cycle performance and electrochemical performance through the comprehensive application of nanocrystallization,amorphization,alloying and compounding of silicon-based materials.
The silicon-based anode materials are of great importance for lithium ion batteries(LIBs) because of their high capacity.In this paper,by optimizing the binder content in lithium ion battery electrodes,finding best anode materials for lithium ion battery silicon cycle performance of experimental conditions.Choose graphene as conductive agent,can improve the electrical conductivity of the electrode,provide a good channel for lithium ion transport.The increase of the content of graphite reduces the specific capacity theory of composite material,and the existence of graphite,alleviate the embedded in the lithium ion and emerge in the process of volume change,improve the cycle performance of composite materials.The predominant direction will be to promote both cycle performance and electrochemical performance through the comprehensive application of nanocrystallization,amorphization,alloying and compounding of silicon-based materials.
引文
[1]Zhao H P,He Y D,Kong X H,et al,J.Materials Letters,2007,61,4916-4919.
[2]Yu C,Li X,Ma T,et al,J.Advanced Energy Materials,2012,2,68-73.
[3]Ge M,Rong J,Fang X,et al,J.Nano Letters,2012,12,2318-2323.
[2]Yu C,Li X,Ma T,et al,J.Advanced Energy Materials,2012,2,68-73.
[3]Ge M,Rong J,Fang X,et al,J.Nano Letters,2012,12,2318-2323.