Integrated interconnected porous and lamellar structures realized fast ion/electron conductivity in high-performance lithium-sulfur batteries

作     者：Ya Song Mingxia Zhou Zhu Chen Huali Nie Jiao-Jing Shao Guangmin Zhou Ya Song;Mingxia Zhou;Zhu Chen;Huali Nie;Jiao-Jing Shao;Guangmin Zhou

作者机构：School of Materials and MetallurgyGuizhou UniversityGuiyang 550025China Medical College of Guizhou UniversityGuiyang 550025China College of Biological Science and Medical EngineeringDonghua UniversityShanghai 201620China Shenzhen Geim Graphene CenterTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China 

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

年 卷 期：2024年第35卷第6期

页      面：161-167页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：financially supported by National Natural Science Foundation of China(Nos.51972070 and 52062004) Guizhou Provincial High Level Innovative Talents Project(No.QKHPTRC-GCC013-1) Innovation Team for Advanced Electrochemical Energy Storage Devices and Key Materials of Guizhou Provincial Higher Education Institutions(No.Qian Jiao Ji054) Guizhou Provincial Science and Technology Projects(No.QKHJC1Z042) Cultivation Project of Guizhou University(No.GDPY01) 

主　　题：Interlayer Shuttle effect Strong adsorption Porous carbon spheres Lithium-sulfur batteries 

摘      要：The practical application of high-energy-density lithium-sulfur(Li-S)batteries have been highly praised for energy storage devices,while are largely hindered by the“shuttling effect.Herein,core-shell carbon spheres composed of interlinked porous core and lamellar shell were designed to restrain the polysulfide *** microporous structure with pore size of around 1 nm effectively trap lithium ***,the interconnected porous core shortens the ion transfer distance and the lamellar carbon shell endows the carbon spheres with fast electron conduction,finally facilitating polysulfide conversion ***,the Li-S batteries with the carbon spheres as the interlayer show high discharge specific capacity of 1002 m Ah/g at 2 C with 574 m Ah/g remaining after 600 cycles,and high areal capacity of 5.48 m Ah/cm^(2) with sulfur loading of 4.67 mg/cm^(2) at 0.1 *** corresponding pouch cells also exhibit stable cycling stability with an initial discharge specific capacity of 1082 m Ah/g at 0.1 C.