Enhanced Supercapacitance with Porous Single-crystalline GaN Electrode  

作　　者：LI Hao XIE Kui 李浩;谢奎(College of Chemical Engineering,Fuzhou University,Fuzhou 350116,China;Key Laboratory of Design and Assembly of Functional Nanostructures,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China)

机构地区：[1]College of Chemical Engineering,Fuzhou University,Fuzhou 350116,China [2]Key Laboratory of Design and Assembly of Functional Nanostructures,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China

出　　处：《Chinese Journal of Structural Chemistry》2021年第8期1005-1011,968,共8页结构化学（英文）

基　　金：supported by the National Key Research and Development Program of China(2017YFA0700102);Natural Science Foundation of China(91845202);Dalian National Laboratory for Clean Energy(DNL180404);Strategic Priority Research Program of Chinese Academy of Sciences(XDB2000000)。

摘　　要：Capacitance is generally determined by the porous microstructure,electron conduction and the synergy effect of active sites in the porous electrode.In this work,we grew centimeter-scale metallic porous GaN single crystals with conductivity up to 18 S/cm at room temperature.The Cu-catecholates(Cu–CAT)nanowire arrays were grown on porous GaN single crystal to form porous single-crystalline electrode with enhanced supercapacitor performance.The Cu–CAT/GaN single crystalline electrode exhibits specific capacitance of 216 F/g and normalized capacitance of 40μF/cm^(2).After 5000 cycles,it retains 80%of its initial capacitance.The porous single-crystalline GaN electrode has high porosity and excellent conductivity showing high surface capacitance.

关 键 词：SUPERCAPACITANCE GaN single crystal Cu–CAT nanowire arrays single-crystalline electrode 

分 类 号：TM53[电气工程—电器] TQ133.51[化学工程—无机化工]