Lithium-sulfur(Li-S)batteries are promising candidates for next-gen-eration energy storage systems owing to their high energy density and low cost.How-ever,critical challenges including severe shuttling of lithium polysulfides(LiPSs)and sluggish redox kinetics limit the practical application of Li-S batteries.Car-bon nitrides(CxNy),represented by graphitic carbon nitride(g-C3N4),provide new opportunities for overcoming these challenges.With a graphene-like structure and high pyridinic-N content,g-C3N4 can effectively immobilize LiPSs and enhance the redox kinetics of S species.In addition,its structure and properties including electronic conductivity and catalytic activity can be regulated by simple methods that facilitate its application in Li-S batteries.Here,the recent progress of applying CxNy-based materials including the optimized g-C3N4,g-C3N4-based composites,and other novel CxNy materials is systematically reviewed in Li-S batteries,with a focus on the structure-activity relationship.The limitations of existing CxNy-based materials are identified,and the perspectives on the rational design of advanced CxNy-based materials are provided for high-performance Li-S batteries.

Wenhao Sun;Zihao Song;Zhenxing Feng;Yaqin Huang;Zhichuan J.Xu;Yi-Chun Lu;Qingli Zou

State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,People's Republic of China;School of Chemical,Biological,and Environmental Engineering,Oregon State University,Corvallis,OR 97331,USA;School of Materials Science and Engineering,Nanyang Technological University,Singapore 639798,Republic of Singapore;Electrochemical Energy and Interfaces Laboratory,Department of Mechanical and Automation Engineering,The Chinese University of Hong Kong,Hong Kong Special Administrative Region 999077,People's Republic of China

纳微快报（英文）

[1]Wenhao Sun;Zihao Song;Zhenxing Feng;Yaqin Huang;Zhichuan J.Xu;Yi-Chun Lu;Qingli Zou-.Carbon-Nitride-Based Materials for Advanced Lithium-Sulfur Batteries)[J].纳微快报（英文）,2022(12):579-601

CxNy

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