PAN/MXene同轴纤维电极的制备及性能
Preparation and properties of PAN/MXene coaxial fiber electrode
屈芸 1成丽媛 1代国亮 2王刚 2郭羽晴 1孙洁1
作者信息
- 1. 江南大学纺织与科学工程学院,江苏 无锡 214122
- 2. 中国人民解放军军事科学院系统工程研究院,北京 100010
- 折叠
摘要
采用单片层MXene、聚甲基丙烯酸甲酯(PMMA)和聚丙烯腈(PAN)粉末为原料制备不同纺丝液,经过同轴湿法纺丝成型、高温炭化制备出一系列不同壳芯组分同轴纤维电极;分析不同壳层、芯层材料对纤维电极微观结构以及力学、电学、电化学等性能的影响规律.结果表明,当以PAN/MXene为壳层、PAN/PMMA为芯层时,可以实现电极材料力学性能与电化学性能的平衡,拉伸强度、电导率和比电容分别为可达到14.4MPa、322.7S/m和113.18F/g,经过1000次恒电流充放电测试(GCD)循环后,比电容保持率可达到95.7%.
Abstract
A series of coaxial fiber electrode samples with different sheath and core component were prepared through wet-spinning method combined with subsequent high temperature carbonization.Single-layer MXene sheets,polymethyl methacrylate(PMMA)and polyacrylonitrile(PAN)were applied in this study for making various spinning solution.The influence of different material constitution of the sheath and core layer on the property of as-prepared fiber electrodes,including microstructure,mechanical strength,electrical conductivity and electrochemical performance,was discussed and analyzed.The results showed that the fiber electrode sample with PAN/MXene sheath layer and PAN/PMMA core layer could achieve balance between the electrochemical performance and mechanical strength.The tensile breaking strength,specific conductance and specific capacitance reached 14.4MPa,322.7S/m and 113.18F/g,respectively.In addition,the fiber electrode also had good cycle stability with capacitance retention rate at 95.7%after 1000 GCD cycles.
关键词
纤维电极/MXene/同轴纤维/湿法纺丝/电化学储能Key words
fiber electrode/MXene/coaxial fiber/wet-spinning/electrochemical energy storage引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据