Pomegranate-inspired porous SnSe/ZnSe@C anode:A stress-buffer nanostructure for fast and ultrastable sodium-ion storage

作     者：Zhixin Liang Qinghua Li Wang Zhang Dandan Yu Wei Zhang Jiawei Wu Gaoyu Wang Wenbo Fan Junling Wang Shaoming Huang Zhixin Liang;Qinghua Li;Wang Zhang;Dandan Yu;Wei Zhang;Jiawei Wu;Gaoyu Wang;Wenbo Fan;Junling Wang;Shaoming Huang

作者机构：School of Materials and EnergyGuangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006GuangdongChina College of Materials Science and EngineeringShenzhen UniversityShenzhen 518055GuangdongChina College of Materials and ChemistryChina Jiliang UniversityHangzhou 310018ZhejiangChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第75卷第12期

页      面：369-377,I0010页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：support from the National Natural Science Foundation of China(51920105004,52102223) the Basic and Applied Basic Research Fund Project of Guangdong Province(2020A1515110401) 

主　　题：SnSe Electrostatic spraying Carbon armor Superior cycling stability Sodium-ion batteries Sodiation mechanism 

摘      要：Tin selenide(SnSe)is considered as a potential anode for sodium-ion batteries(SIBs)owing to its high theoretical specific ***,it suffers from drastic volume expansion/contraction during sodium ions insertion/extraction,resulting in poor cycling ***,a pomegranate-inspired porous carbon shell wrapped heterogeneous SnSe/ZnSe composite(SnSe/ZnSe@C)is exquisitely designed and fabricated through electrostatic spraying followed by high-temperature *** polyacrylonitrile-derived carbon shell acts as an adhesive to link the porous cubic SnSe/ZnSe and form highly interconnected microcircuits to improve the electron/ion transfer efficiency and inhibit the bulk volume change of internal metallic selenide nanoparticles and polyselenides dissolution during repeated ***,the abundant heterostructure interface of SnSe/ZnSe further significantly accelerates the electrons/ions *** a result,the as-prepared SnSe/ZnSe@C electrode exhibits a high specific capacity(508.3 m Ah g^(-1)at 0.05 A g^(-1)),excellent rate performance(177.8 m Ah g^(-1)at 10.0 A g^(-1)),and remarkable cycling stability(195.9 m Ah g^(-1)after 10,000 cycles at 5.0 A g^(-1)).Furthermore,in-situ Xray diffraction(XRD)/Raman,ex-situ transmission electron microscopy,and kinetic analysis clearly reveal a four-step electrochemical reaction process and battery-capacitor dual-mode sodium storage *** work provides a new perspective for developing commercial SIBs anode materials with high capacity and long lifespan.