Phase engineering and heteroatom incorporation enable defect-rich MoS_(2) for long life aqueous iron-ion batteries  

作　　者：Xinyu Guo Chang Li Wenjun Deng Yi Zhou Yan Chen Yushuang Xu Rui Li 

机构地区：[1]School of Advanced Materials,Peking University Shenzhen Graduate School,Shenzhen 518055,China

出　　处：《Chinese Chemical Letters》2025年第3期506-511,共6页中国化学快报(英文版)

基　　金：supported by Shenzhen Fundamental Research Program(No.GXWD20201231165807007-20200802205241003).

摘　　要：Aqueous iron-ion batteries are regarded as one of the most promising candidates for grid applications owing to their low cost,high theoretical capacity,and excellent stability of iron in aqueous electrolytes.However,the slow Fe(de)insertion caused by the high polarity of Fe^(2+)makes it difficult to match suitable cathode materials.Herein,defect-rich MoS_(2)with abundant 1T phase is synthesized and successfully applied in aqueous iron-ion batteries.Benefit from abundant active sites generated by the heteroatom incorporation and S vacancy,as well as the highly conductive 1T phase,it can deliver a specific capacity of 123 mAh/g at a current density of 100mA/g,and demonstrates an impressive capacity retention of 88%after 600 cycles at 200mA/g.This work presents a novel pathway for the advancement of cathode materials for aqueous iron-ion batteries.

关 键 词：MoS_(2) Controllable phase engineering Aqueous iron-ion batteries Fe^(2+)intercalation Iron metal anode 

分 类 号：TM911.41[电气工程—电力电子与电力传动] TM912