Guanine-assisted N-doped ordered mesoporous carbons as efficient capacity decaying suppression materials for lithium–sulfur batteries

作     者：Riguang Cheng Yanxun Guan Yumei Luo Chenchen Zhang Yongpeng Xia Sheng Wei Mengmeng Zhao Qi Lin Hao Li Shiyou Zheng Federico Rosei Lixian Sun Fen Xu Hongge Pan Riguang Cheng;Yanxun Guan;Yumei Luo;Chenchen Zhang;Yongpeng Xia;Sheng Wei;Mengmeng Zhao;Qi Lin;Hao Li;Shiyou Zheng;Federico Rosei;Lixian Sun;Fen Xu;Hongge Pan

作者机构：School of Material Science&EngineeringGuangxi Key Laboratory of Information Materials and Guangxi Collaborative Innovation Center of Structure and Property for New Energy and MaterialsGuilin University of Electronic TechnologyGuilin 541004China School of Mechanical&Electrical EngineeringGuilin University of Electronic TechnologyGuilin 541004China School of Material Science&EngineeringUniversity of Shanghai for Science&TechnologyShanghai 200093China CentreÉnergieMatériaux et TélécommunicationsInstitut National de la Recherche Scientifique1650 Boul.Lionel BouletVarennesJ3×1S2QuébecCanada School of New Energy Science and TechnologyXi’an Technological UniversityChina 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第101卷第6期

页      面：155-164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 Key Research and Development Program of China(2018YFB1502103,2018YFB1502105) the National Natural Science Foundation of China(Grant Nos.U20A20237,51871065 and 51971068) the Scientific Research and Technology Development Program of Guangxi(AA19182014,AD17195073 and AA17202030–1) Guangxi Bagui Scholar Foundation Guangxi Collaborative Innovation Centre of Structure and Property for New Energy and Materials Guangxi Advanced Functional Materials Foundation Application Talents Small Highlands Chinesisch–Deutsche Kooperationsgruppe(GZ1528) the Canada Research Chairs program for partial salary support the Guangxi undergraduate innovation and entrepreneurship training program(202010595272) 

主　　题：Lithium–sulfur batteries N-doped ordered mesoporous carbons Electrochemistry 

摘      要：Lithium–sulfur(Li–S)batteries are considered promising next-generation energy storage devices due to their high weight capacities and theoretical energy densities,which are significantly higher than those of conventional lithium-ion ***,the sulfur cathode presents two major drawbacks,specifically low specific capacity caused by the poor electrical conductivities of the active materials and fast capacity decay caused by polysulfide dissolution/***,a high-rate and high-stability dendritic material consisting of N-doped ordered mesoporous carbons(NOMCs)was successfully synthesized via a facile and low-cost calcination *** highly ordered mesoporous carbon skeleton limited the growth of the sulfur nanofiller within its channels and provided the necessary electrical contact with the insulating ***,N-doped heteroatoms presented strong binding sites for trapping polysulfide intermediates,achieving high electrochemical activity,which promoted polysulfide conversion *** a result,the prepared NOMC-2/S cathode material with 1.2-1.5 mg cm^(-2)of sulfur displayed excellent electrochemical performance with a high-rate capability of 460.5 m Ah g^(-1)at 1 C,a high specific capacity of 530.9 m Ah g^(-1)after 200 cycles at 0.1 C,and a decay rate of~0.19%per cycle.