g-C_(3)N_(4)modified MoS_(2)photoelectrodes for stable photo-assisted zinc-ion capacitors  

用于光辅助增强锌离子电容器稳定性的g-C_(3)N_(4)修饰MOS_(2)光电极

作　　者：Changhua Mi Xin Sun Xiaojing Yin Jiahao Yang Yanlong Lv Xiaojun Lv Meicheng Li 米倡华;孙鑫;般小净;杨佳豪;吕延龙;吕小军;李美成

机构地区：[1]State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,School of New Energy,North China Electric Power University,Beijing 102206,China

出　　处：《Science China Materials》2025年第4期1082-1090,共9页中国科学(材料科学)(英文版)

基　　金：upported partially by the National Natural Science Foundation of China(52302250 and 52272200);the Hebei Natural Science Foundation(B2024502013);the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(LAPS21004 and LAPS202114);the Beijing Natural Science Foundation(2222076);the 2022 Strategic Research Key Project of Science and Technology Commission of the Ministry of Education,the China Postdoctoral Science Foundation(2022M721129);the Fundamental Research Funds for the Central Universities(2022MS030 and 2021MS028);the NCEPU"Double First-Class"Program。

摘　　要：Photo-assisted capacitors are attractive devices for solar energy conversion and storage,while the behavior of photoelectrodes limits their performance.In this work,MoS_(2)photoelectrodes were modified by g-C_(3)N_(4),exhibiting enhanced photo-rechargeable properties.Our results show that the introduction of g-C_(3)N_(4)increases the surface area of MoS_(2)photoelectrodes and promotes the transport of charge carriers,which can boost the specific capacity and cycle stability of capacitors.The as-prepared zinc-ion capacitors with g-C_(3)N_(4)/MoS_(2)photoelectrodes show a specific capacity of 380.93 F/g at 1 A/g under AM 1.5 G illumination.Remarkably,after 3000 cycles at 10 A/g,the capacity of the photo-assisted zinc-ion capacitor retains above 99%.光辅助充电电容器是一种有吸引力的太阳能转换和储存装置,但光电极的性能限制了它们的效果.在这项工作中,g-C_(3)N_(4)修饰的MoS_(2)光电极表现出增强的光可充电性能.结果表明,g-C_(3)N_(4)的引入增加了MoS_(2)光电极的表面积,促进了载流子的输运,从而提高了电容器的比容量和循环稳定性.在AM 1.5 G照明下,采用g-C_(3)N_(4)/MoS_(2)光电极制备的锌离子电容器在1 A/g下的比容量为380.93 F/g.值得注意的是,在10 A/g下循环3000次后,光辅助锌离子电容器的容量保持在99%以上.

关 键 词：g-C_(3)N_(4)/MoS_(2)heterojunction photo-assisted capacitor zinc-ion capacitor photogenerated carriers PHOTOELECTRODE 

分 类 号：TM53[电气工程—电器]