Growing Intact Membrane by Tuning Carbon Down to Ultrasmall 0.37 nm Microporous Structure for Confining Dissolution of Polysulfides Toward High-Performance Sodium–Sulfur Batteries

作     者：Chao Wu Juan Li Lifei Liu Heng Zhang Zhuo Zou Wei Sun Fangyin Dai Changming Li Chao Wu;Juan Li;Lifei Liu;Heng Zhang;Zhuo Zou;Wei Sun;Fangyin Dai;Changming Li

作者机构：State Key Laboratory of Silkworm Genome BiologyCollege of SericultureTextile and Biomass SciencesSouthwest UniversityChongqing 400715China Institute of Materials Science and DevicesSchool of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215011China School of Materials and EnergySouthwest UniversityChongqing 400715China College of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou 571158China 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2023年第6卷第4期

页      面：147-156页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 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：financial support from Chongqing Postdoctoral Natural Science Foundation No.cstc2020jcyj-bsh0048 State Key Laboratory of Silkworm Genome Biology,Suzhou Foreign Academician Workstation(SWY2021002) Collaborative Innovation Center of Water Treatment Technology and Material,and Innovation Platform for Academicians of Hainan Province 

主　　题：carbon-sulfur composite cathode membrane pore size sodium-sulfur batteries 

摘      要：Room temperature sodium–sulfur(Na–S)batteries are severely hampered by dissolution of polysulfides into ***,a facile approach is used to tune a biomass-derived carbon down to an ultrasmall 0.37 nm microporous structure for the first time as a cathode in sodium–sulfur *** produced an intact uniform Na2S membrane to greatly confine the dissolution of polysulfides while realizing a direct solid phase conversion for complete reduction of sulfur to Na2S,which delivers a sulfur loading of 1 mg cm−2(50 wt.%),an excellent rate capacity(933 mAh g^(−1)@0.1 A g^(−1)and 410 mAh g^(−1)@2Ag^(−1)),long cycle performance(0.036%per cycle decay at 1 A g^(−1)after 1500 cycles),and a high energy density for 373 Wh kg^(−1)(0.1 A g^(−1))based on whole electrode weight(active sulfur loading+carbon),ranking the best among all reported plain carbon cathode-based room temperature sodium–sulfur batteries in terms of the cycle life and rate *** is proposed that the solid Na2S produced in the ultrasmall pores(0.37 nm)can be squeezed out to grow an intact membrane on the electrode surface covering the outlet of the pores and greatly depressing the dissolution effect of polysulfides for the long cycle *** work provides a green chemistry to recycle wastes for sustainable energies and sheds light on design of a unique pore structure to effectively block the dissolution of polysulfides for high-performance sodium–sulfur batteries.