文献类型：期刊文献

英文题名：Fe1-xS/S-doped carbon nanosheets derived from iron organic framework for high performance potassium-ion batteries anode

作者：Xu, Yan[1];Wang, Bin[1];Wu, Huarui[1];Ti, Ruixia[1];Chen, Zezhang[1]

第一作者：徐彦

通讯作者：Xu, Y[1];Chen, ZZ[1]

机构：[1]Xinxiang Univ, Phys & Elect Engn Dept, Xinxiang 453003, Henan, Peoples R China

第一机构：新乡学院物理与电子工程学院

通讯机构：[1]corresponding author), Xinxiang Univ, Phys & Elect Engn Dept, Xinxiang 453003, Henan, Peoples R China.|[110717]新乡学院物理与电子工程学院;[11071]新乡学院;

年份：2021

卷号：291

外文期刊名：MATERIALS LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000634766700012)】；

基金：This work was supported by National Nature Science Foundation of China (Nos. U1904198) , Henan science and technology public relations project (No.192102310467) , the Key scientific project of Higher education of Henan province (No.18A140028) .

语种：英文

外文关键词：Energy storage and conversion; Microstructure; Nanocomposites; Iron organic framework; Metal sulfides; Fe1-xS/SC

摘要：Metal sulfides are popular in energy storage system for unique advantages, including high theoretical capacity and readily available raw materials. However, there are some obstacles to overcome before application in potassium ion batteries (PIBs). Huge changes in volume during insertion/extraction of K+, which will cause the structure destruction of the electrode and lead to rapid decay of capacity. In addition, due to the poor electrical conductivity of Fe1-xS, the rate performance is always poor. Herein, Fe1-xS/ S-doped carbon nanosheets (Fe1-xS/SC) were synthesized. When applied Fe1-xS/SC as anode for PIBs, it exhibits excellent electrochemical performance: a reversible capacity of 430 mAh g(-1) can be maintained at 50 mA g(-1) after 300 cycles, a super rate performance of 255 and 170 mAh g(-1) at 1000 and 2000 mA g(-1) can be observed. (C) 2021 Published by Elsevier B.V.