聚吡咙基柔性碳膜的制备及电化学性能研究  

Preparation and electrochemical performance of polypyrrolone-based flexible carbon films

作　　者：马鸣 刘伟 闫源 孙刚 夏鑫[1] Ma Ming;Liu Wei;Yan Yuan;Sun Gang;Xia Xin(College of Textiles and Clothing,Xinjiang University,Urumqi 830046)

机构地区：[1]新疆大学纺织与服装学院,乌鲁木齐830046

出　　处：《化工新型材料》2023年第5期97-101,共5页New Chemical Materials

基　　金：国家自然科学基金面上项目(51763022);2020年天山青年计划“基于柔性储能电池的纺织界面设计与载流子传输机理”(2020Q003);2021年自治区研究生科研创新项目(XJ2021G074)。

摘　　要：将聚吡咙和不同浓度聚酰亚胺前驱体的溶液混合,采用静电纺丝和高温碳化技术,通过表面形貌观察、结构表征和电化学测试对柔性纤维膜进行分析。结果表明,由于聚吡咙与聚酰亚胺二者结构相似,具有良好的相容性;纳米纤维膜经过氮气气氛亚胺化、碳化后表现出优异的柔韧性,可直接作为锂电自支撑负极材料。当聚吡咙与9%(wt,质量分数)聚酰亚胺的质量比为85∶15,电流密度为50mA/g时,经100圈循环后,仍有378.7mAh/g的放电比容量。In order to prepare flexible self-supporting lithium battery anode carbon nanofiber films,solutions of polypyrrolones and polyimide precursors with different concentrations were mixed,and the flexible fiber films were analyzed by surface morphology observation,structural characterization,and electrochemical testing using electrospinning and high-temperature carbonization techniques.The results showed that due to the structural similarity between polypyrrolone and polyimide,they had good compatibility.The nanofiber films exhibited excellent flexibility after imidization and carbonization in nitrogen atmosphere,and could be directly used as lithium self-supporting anode material.When the mass ratio of polypyrrolone to 9wt%polyimide was 85∶15 and the current density was 50mA/g,the discharge specific capacity of 378.7mAh/g was still available after 100 cycles.

关 键 词：静电纺丝 聚吡咙 纳米纤维膜 电化学性能 自支撑 

分 类 号：TQ152[化学工程—电化学工业] O632.6[理学—高分子化学]