MXene包覆提升硅负极性能  

Enhancing silicon anode performance with MXene coating

作　　者：王婧姝[1] 韩艳峰 袁壹铭 李宇晴 吴香怡 赵日灿 高锌 张俊凯 WANG Jing-shu;HAN Yan-feng;YUAN Yi-ming;LI Yu-qing;WU Xiang-yi;ZHAO Ri-can;GAO Xin;ZHANG Jun-kai(College of Physics,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学物理学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2024年第1期15-18,共4页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(11404137);吉林省科技发展计划项目(20230101285JC)。

摘　　要：侧重于Ti_(3)C_(2)T_(X) MXene&硅(Si)三明治结构负极在硅基锂离子电池中的应用研究,发现通过真空抽滤法制备的Ti_(3)C_(2)T_(X) MXene&Si复合负极可以有效抑制硅材料在充放电过程中的体积膨胀,优化其循环稳定性.X射线衍射和扫描电镜的结果表明,MXene与硅微米颗粒成功形成三明治(夹层)结构.组装成扣式电池测试其电化学性能,发现Ti_(3)C_(2)T_(X) MXene&Si复合负极表现出优异于硅颗粒单体的充放电容量和循环寿命,这项研究为硅负极电池的商业化提升提供了一定的科学依据.The present study is primarily focused on the application of Ti_(3)C_(2)T_(X) MXene&Silicon(Si)sandwich cathode in silicon-based lithium-ion batteries.The composite electrode fabricated via vacuum filtration can effectively impede the volume expansion of silicon material during charging and discharging,thereby optimizing the cycling stability.The results of X-ray diffraction and scanning electron microscopy reveal the successful formation of a sandwich structure by MXene and silicon micron particles.The Ti_(3)C_(2)T_(X) MXene&Si composite cathode demonstrates an outstanding charge-discharge capacity and cycle life compared to the pristine silicon particle.This research provides a scientific foundation for the commercialization of silicon negative battery.

关 键 词：Ti_(3)C_(2)T_(X)MXene 硅 循环寿命 锂离子电池 

分 类 号：O645.1[理学—物理化学]