Elastic Buffering Layer on CuS Enabling High-Rate and Long-Life Sodium-Ion Storage

作     者：Yuanhua Xiao Feng Yue Ziqing Wen Ya Shen Dangcheng Su Huazhang Guo Xianhong Rui Liming Zhou Shaoming Fang Yan Yu Yuanhua Xiao;Feng Yue;Ziqing Wen;Ya Shen;Dangcheng Su;Huazhang Guo;Xianhong Rui;Liming Zhou;Shaoming Fang;Yan Yu

作者机构：Key Laboratory of Surface and Interface Science and TechnologyZhengzhou University of Light IndustryZhengzhou 450002People’s Republic of China Institute of Nanochemistry and NanobiologySchool of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444People’s Republic of China Institute School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006People’s Republic of China Hefei National Research Center for Physical Sciences at the MicroscaleDepartment of Materials Science and EngineeringNational Synchrotron Radiation LaboratoryCAS Key Laboratory of Materials for Energy ConversionUniversity of Science and Technology of China.HefeiAnhui 230026People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2022年第14卷第12期

页      面：27-39页

核心收录：

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(NSFC.U1904190,51925207,U1910210,52161145101 and 51872277) the Natural Science Foundation for Excellent Young Scholars of Henan Province(Grant No.212300410091) Program for Science and Technology Innovation Talents in Universities of Henan Province(Grant No.22HASTIT005) Key Program of Henan Province for Science and Technology(222102240029) the“Transformational Technologies for Clean Energy and Demonstration”Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDA21000000) the National Synchrotron Radiation Laboratory(KY2060000173) the Joint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy(Grant.YLU-DNL Fund 2021002) the Fundamental Research Funds for the Central Universities(WK2060140026) 

主　　题：CuS Elastic buffering layer Polyaniline Long life Sodium-ion batteries 

摘      要：The latest view suggests the inactive core,surface pulverization,and poly sulfide shuttling effect of metal sulfides are responsible for their low capacity and poor cycling performance in sodium-ion batteries(SIBs).Whereas overcoming the above problems based on conventional nanoengineering is not efficient *** this work,erythrocyte-like CuS microspheres with an elastic buffering layer of ultrathin poly aniline(PANI) were synthesized through one-step selfassembly growth,followed by in situ polymerization of *** CuS@PANI is used as anode electrode in SIBs,it delivers high capacity,ultrahigh rate capability(500 mAh gat 0.1 A g,and 214.5 mAh gat 40 A g),and superior cycling life of over 7500 cycles at 20 A g.A series of in/ex situ characterization techniques were applied to investigate the structural evolution and sodium-ion storage *** PANI swollen with electrolyte can stabilize solid electrolyte interface layer,benefit the ion transport/charge transfer at the PANI/electrolyte interface,and restrain the size growth of Cu particles in confined ***,finite element analyses and density functional simulations confirm that the PANI film effectively buffers the volume expansion,suppresses the surface pulverization,and traps the poly sulfide.