Efficient Catalytic Conversion of Polysulfides by Biomimetic Design of “Branch‑Leaf” Electrode for High‑Energy Sodium–Sulfur Batteries

作     者：Wenyan Du Kangqi Shen Yuruo Qi Wei Gao Mengli Tao Guangyuan Du Shu‑juan Bao Mingyang Chen Yuming Chen Maowen Xu Wenyan Du;Kangqi Shen;Yuruo Qi;Wei Gao;Mengli Tao;Guangyuan Du;Shu‑juan Bao;Mingyang Chen;Yuming Chen;Maowen Xu

作者机构：Key Laboratory of Luminescence Analysis and Molecular Sensing(Southwest University)Ministry of EducationSchool of Materials and EnergySouthwest UniversityChongqing 400715People’s Republic of China Beijing Computational Science Research CenterBeijing 100193People’s Republic of China Center for Green InnovationSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083People’s Republic of China College of Environmental Science and EngineeringFujian Normal UniversityFuzhou 350007People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2021年第13卷第3期

页      面：155-167页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 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 is financially supported by Grants from the National Natural Science Foundation of China(No.21773188,21972111,U1530401) Natural Science Foundation of Chongqing(cstc2018jcyjAX0714) 

主　　题：Co nanoparticles Sodium-sulfur batteries Branch-leaf,biomimetic 

摘      要：Rechargeable room temperature sodium–sulfur(RT Na–S)batteries are seriously limited by low sulfur utilization and sluggish electrochemical reaction activity of polysulfide ***,a 3D“branch-leafbiomimetic design proposed for high performance Na–S batteries,where the leaves constructed from Co nanoparticles on carbon nanofibers(CNF)are fully to expose the active sites of *** CNF network acts as conductive“branchesto ensure adequate electron and electrolyte supply for the Co *** an effective electrocatalytic battery system,the 3D“branch-leafconductive network with abundant active sites and voids can effectively trap polysulfides and provide plentiful electron/ions pathways for electrochemical *** calculation reveals that the Co nanoparticles can induce the formation of a unique Co–S–Na molecular layer on the Co surface,which can enable a fast reduction reaction of the ***,the prepared“branch-leafCNF-L@Co/S electrode exhibits a high initial specific capacity of 1201 mAh g^−1 at 0.1 C and superior rate performance.