High-density oxygen-doped nano-TaN enables robust polysulfide interconversion in Li−S batteries

作     者：Shuang Yu Yonggui Zhang Shuo Yang Kuikui Xiao Dong Cai Huagui Nie Zhi Yang Shuang Yu;Yonggui Zhang;Shuo Yang;Kuikui Xiao;Dong Cai;Huagui Nie;Zhi Yang

作者机构：Key Laboratory of Carbon Materials of Zhejiang ProvinceWenzhou UniversityWenzhou 325035China College of Electrical and Electronic EngineeringWenzhou UniversityWenzhou 325035China 

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

年 卷 期：2023年第34卷第8期

页      面：360-364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：This work was supported in part by the National Natural Science Foundation of China(Nos.22109119,51972238 and U21A2081) the Natural Science Foundation of Zhejiang Province(Nos.LQ19B030006 and LQ22B030003) the Major Scientific and Technological Innovation Project of Wenzhou City(No.ZG2021013) 

主　　题：Lithium−sulfur batteries Polysulfide conversion O doping TaN High-density 

摘      要：To tackle undesirable shuttle reaction and sluggish reaction kinetics in lithium–sulfur(Li–S)batteries,we develop a porous and high-density oxygen-doped tantalum nitride nanostructure(nano-TaNO)as an efficient catalyst through delicate *** from well-defined interior and surface nanopore channels,the nano-TaNO favors abundant sulfur storage,easy electrolyte infiltration and good electrons/Li+*** importantly,high-density O dopant in nano-TaNO not only provides high conductivity,but also promotes polysulfide adsorption/conversion via Li–O chemical interactions and the generation of S3∗−radicals to activate additional evolution path from S8 to Li_(2)***,the nano-TaNObased cathode exhibits excellent specific capacity and cyclability even under high sulfur loading *** interesting findings suggest the great potential of tantalum nitride and a high amount of anion doping engineering in manipulating intermediates and building high-performance Li−S rechargeable batteries.