Bioinspired urchin-like murray carbon nanostructure with protection shell for advanced lithium-sulfur batteries  

作　　者：Ya-Wen Tian Yong Yu Liang Wu Min Yan Wen-Da Dong Chen-Yang Wang Hemdan S.H.Mohamed Zhao Deng Li-Hua Chen Tawfique Hasan Yu Li Bao-Lian Su 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,Hubei,China [2]School of Automotive Engineering,Xiangyang Polytechnic,Xiangyang 441050,Hubei,China [3]Hubei Key Laboratory of Plasma Chemistry and Advanced Materials,Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials,School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,Hubei,China [4]Physics Department,Faculty of Science,Fayoum University,El Gomhoria Street,63514 Fayoum,Egypt [5]Cambridge Graphene Centre,University of Cambridge,Cambridge CB30FA,United Kingdom [6]Laboratory of Inorganic Materials Chemistry(CMI),University of Namur,61 rue de Bruxelles,B-5000 Namur,Belgium

出　　处：《Journal of Energy Chemistry》2023年第10期1-10,I0002,共11页能源化学（英文版）

基　　金：financially supported by National Key Research and Development Program of China [2016YFA0202602, 2021YFE0115800];National Natural Science Foundation of China [22275142, U22B6011, U20A20122, 21671155];Program of Introducing Talents of Discipline to Universities-Plan 111 from the Ministry of Science and Technology and the Ministry of Education of China [Grant No. B20002];Sinopec Ministry of Science and Technology Basic Prospective Research Project [218025-9];Natural Science Foundation of Hubei Province [2021CFB082];Scientific Research Foundation of Wuhan Institute of Technology [K2021042];the Open Key Fund Project of State Key Laboratory of Advanced Technology for Materials Synthesis and Processing [Wuhan University of Technology, 2022-KF-10]。

摘　　要：Commercial application of lithium-sulfur(Li-S) batteries is hindered by the insulating nature of sulfur and the dissolution of polysulfides. Here, a bioinspired 3D urchin-like N-doped Murray's carbon nanostructure(N-MCN) with interconnected micro-meso-macroporous structure and a polydopamine protection shell has been designed as an effective sulfur host for high-performance Li-S batteries. The advanced 3D hierarchically porous framework with the characteristics of the generalized Murray's law largely improves electrolyte diffusion, facilitates electrons/ions transfer and provides strong chemisorption for active species, leading to the synergistic structural and chemical confinement of polysulfides. As a result,the obtained P@S/N-MCN electrode with high areal sulfur loading demonstrates high capacity at high current densities after long cycles. This work reveals that following the generalized Murray's law is feasible to design high-performance sulfur cathode materials for potentially practical Li-S battery applications.

关 键 词：Li-S batteries Murray’s law Hierarchically porous framework N-doped carbon Structural-chemical confinement 

分 类 号：TM912[电气工程—电力电子与电力传动] TB383.1[一般工业技术—材料科学与工程]