掺杂碳基纳米阵列薄膜应用于锂离子电池材料

项目名称： 掺杂碳基纳米阵列薄膜应用于锂离子电池材料

项目编号： No.21301018

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 陈南

作者单位： 北京理工大学

项目金额： 25万元

中文摘要： 碳基纳米材料在锂离子电池电极材料方面具有良好应用前景，其微观物理形貌特征与本证化学结构对器件电学性能影响很大。本项目拟将以含有N、S和P等杂原子的小分子为前体，通过电化学模板限域聚合和模板浸润法获得纳米管/线阵列，进而碳化获得杂原子掺杂的碳基纳米管/线阵列薄膜，系统探讨掺杂碳基纳米管/线阵列作为新型锂电池负极材料的微观结构与电学性能的关系。这种新型掺杂碳化纳米管/线阵列以期将有效缓冲作为电极材料在充放电过程中的体积效应，杂原子的存在将有助于增加器件的能量存储能力，阵列结构将诱导形成快速导电传输通道提升材料的导电性能及提高电极材料的倍率性能和循环寿命。本项目研究将系统揭示掺杂碳基纳米材料微结构作为电极材料对锂离子电池性能的影响，通过结构优化为实现基于掺杂碳基纳米管/线阵列的高性能锂离子电池器件奠定基础。

中文关键词： 纳米线阵列；导电高分子；掺杂；锂离子电池；超级电容器

英文摘要： Carbon-based nanomaterials has broad prospects in the aspect of electrode materials for lithium ion batteries, the property of electronic devices is strongly dependent on the microscopic morphological structure and chemical structure. The contents of major scientific issues of this project are related with the carbonized doped-carbon nanoarrys materials combined the electrochemical polymerization and template wetting method by using a molecular precursor which were composed of hetero atoms , such as N, S, and P. The microstructure and electrical properties effect on the materials as the anode material for lithium-ion batteries was also discussed. The novel doped-carbon nanoarrys materials will inhibit the volume effect during the rechargeable performance of the electrode, while the rate capability and cycle life will significantly enhance by the exist of heteroatoms and the structure of nanoarrays which employing the longitudinal channel as the transmission channel. The project for the novel materials of doped-carbon nanotube/wire arrays may show some key value in the lithium ion battery electrode materials.

英文关键词： Nanowire arrays；Conducting polymer；Doping；Lithium ion battery；Supercapacitor