Biocarbon with different microstructures derived from corn husks and their potassium storage properties

作     者：Meng Zhou Qing Wang Yuan Yuan Shao-Hua Luo Ya-Hui Zhang Xin Liu Meng Zhou;Qing Wang;Yuan Yuan;Shao-Hua Luo;Ya-Hui Zhang;Xin Liu

作者机构：School of Materials Science and EngineeringNortheastern UniversityShenyang 110819China State Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang 110819China School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China Hebei Key Laboratory of Dielectric and Electrolyte Functional MaterialQinhuangdao 066004China Qinhuangdao Key Laboratory of Advanced Energy Storage and Conversion TechnologyQinhuangdao 066004China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第11期

页      面：3166-3174页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.51674068,51874079 and 11775226) the Natural Science Foundation of Hebei Province (Nos.E2018501091 and E2020501001) the Science and Technology Project of Hebei Province (No.15271302D) the Training Foundation for Scientific Research of Talents Project,Hebei Province (No.A2016005004) the Natural Science Foundation of Liaoning Province (No.2019-MS-110) the Fundamental Research Funds for the Central Universities (Nos.N182306001,N172302001,N172304044 and N182304015) Qinhuangdao City University Student of Science and Technology Innovation and Entrepreneurship Project (Nos.PZB1810008T-46 and PZB1810008T-14) 

主　　题：Biocarbon Potassium ion battery Carbonization Capacitance Electrochemical performance 

摘      要：In this paper,biocarbon was prepared from corn husks as anode materials for potassium ion batteries at temperatures ranging from 700 to 1600℃.The prepared biocarbon materials have amorphous phase structure and possess larger interlayer spacing than *** biocarbon exhibits enhanced graphitic degree and decreased amounts of surface defects,while the carbonization temperature gradually *** obtained potassium ion battery electrode at 1300℃ acquired high reversible capacity up to 216.6 mAh·g^(-1) at 0.1 A·g^(-1) after 100 cycles, and retained 128.6 mAh·g^(-1) at 1 A·g^(-1) even after500 *** results indicate that the samples prepared at 1300℃ have better electrochemical performance than other samples prepared at different temperatures,which was attributed to the decisive influence of microstructure on surface-induced and intercalating potassium storage.