Cotton-derived oxygen/sulfur co-doped hard carbon as advanced anode material for potassium-ion batteries

作     者：Baolin Xu Shihan Qi Fang Li Xiaoxin Peng Jinfeng Cai Jiaojiao Liang Jianmin Ma Baolin Xu;Shihan Qi;Fang Li;Xiaoxin Peng;Jinfeng Cai;Jiaojiao Liang;Jianmin Ma

作者机构：School of Physics and ElectronicsHunan UniversityChangsha 410082China Yiyang Wanjingyuan Electronics Co.Ltd.Yiyang 413000China College of Traffic EngineeringHunan University of TechnologyZhuzhou 412008China Key Laboratory of Materials Processing and Mold(Zhengzhou University)Ministry of EducationZhengzhou UniversityZhengzhou 450002China State Key Lab of Chemical EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072 China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2020年第31卷第1期

页      面：217-222页

核心收录：

学科分类：081704[工学-应用化学] 0808[工学-电气工程] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：supported by the Natural Science Foundation of Hunan Province (No.2017JJ1008) the National Natural Science Foundation of China (Nos.21905086,51971090) the Key Research and Development Program of Hunan Province of China (No.2018GK2031) 

主　　题：Carbon Doping Anode Potassium-ion battery Biomass 

摘      要：Hard carbon is regarded as promising anode materials for potassium-ion batteries(KIBs)owing to their low price and easy ***,the limited rate capability still needs to be ***,we demonstrate the fabrication of oxygen/sulfur co-doped hard carbon through a facile hydrolyzationsulfuration process of skimmed *** simultaneous dopants significantly improve potassium ion diffusion *** served as the anode for KIBs,this hydrolyzed hard carbon delivered a high reversible capacity(409 mAh/g at 0.1 A/g),superior rate capability(135 mAh/g at 2 A/g)and excellent cyclability(about 120 mAh/g overt 500 cycles at 2 A/g).This work provides a facile strategy to prepare low-cost doped-hard carbon with superior potassium storage property.