NiCoO2/NiCoP@Ni nanowire arrays:tunable composition and unique structure design for high-performance winding asymmetric hybrid supercapacitors

作     者：Wei-Wei Ning Li-Bao Chen Wei-Feng Wei Yue-Jiao Chen Xiao-Yong Zhang Wei-Wei Ning;Li-Bao Chen;Wei-Feng Wei;Yue-Jiao Chen;Xiao-Yong Zhang

作者机构：State Key Laboratory of Powder MetallurgyCentral South UniversityChangsha 410083China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2020年第39卷第9期

页      面：1034-1044页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 07[理学] 0806[工学-冶金工程] 08[工学] 070205[理学-凝聚态物理] 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）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Key Research and Development Program of China(No.2018YFB0104200) 

主　　题：Transition metal phosphides Tunable composition All-solid-state Flexibility Winding supercapacitor 

摘      要：Transition metal phosphides(TMPs)are recognized as such promising supercapacitor materials for the practical application,due to their superior electrical conductivity and excellent redox ***,self-supported three-dimensional NiCoP nanoparticles embedded in NiCoO2 nano wires(NiCoO2/NiCoP)electrode consisting of nickel cobalt phosphides(NiCoP)with high activity and nickel cobalt oxides(NiCoO2)with good stability were fabricated by a hydrothermal and phosphorization *** electrode integrates the advantages of nanowire arrays for fast ion transport and foam Ni for effective charge transport and *** the proper composition control of the nanohybrid and unique structure design,the optimized NiCoO2/NiCoP-20 exhibits a high specific capacitance of 3204 F·g-1 at 1 A·g-1 in 3 mol·L-1 KOH aqueous electrolyte in a three-electrode ***,the asymmetric supercapacitor assembled with the prepared NiCoO2/NiCoP-20 and activated carbon achieves a specific capacitance of 116 F·g-1 with a high energy density of 40.32 Wh·kg-1 at the power density of 800.18 W·*** practical application is further demonstrated with all-solid-state winding supercapacitor devices,with decent flexibility,in series to light the Central South University(CSU)logo consisting of 21 red LED indicators.