摘要
硅基材料作为最有应用前景的下一代高比能锂离子电池负极材料,具有10倍于商业化石墨负极的理论比容量。但是,硅材料在脱嵌锂的过程中会发生严重的体积变化,导致活性材料分离脱落。通过制备纳米尺度的硅材料和硅基复合材料可以在一定程度上缓解体积变化产生的机械应力,但是硅材料固有的体积变化并不会因此消失,所以开发适用于硅基负极材料的新型粘结剂是高比能电池开发的重点工作之一。文中主要介绍了聚合物高分子粘结剂目前的研究进展,重点关注了聚合物高分子间相互作用和聚合物高分子的结构对其粘接性能的影响。
Silicon-based materials are the most promising anode materials for the next generation of high specific energy lithium-ion batteries,with a theoretical specific capacity of 10 times that of commercial graphite anode.However,in the process of extraction and insertion of Li-ion,the volume of silicon materials will change seriously,which will lead to the separation of active materials.The mechanical stress caused by volume change can be alleviated to some extent by preparing nanoscale silicon or silicon-based composite,but the inherent volume change of silicon always existing,so the development of a new binder suitable for silicon-based negative materials is one of the key work.In this paper,the research progress of polymer binder is introduced,and the interaction between polymers and the influence of polymer structure on its adhesive properties are discussed.
作者
米吉福
罗宗武
张丁
邓婉蓉
MI Ji-fu;LUO Zong-wu;ZHANG Ding;DENG Wan-rong(Shaanxi Coal Chemical Industry Technology Research Institute Co.,Ltd.,Xi’an 710065,China)
出处
《陕西煤炭》
2020年第S01期29-32,74,共5页
Shaanxi Coal
基金
陕西省重点研发项目(2017ZDCXL-GY-08-03)。
