Template sacrificial controlled synthesis of hierarchical nanoporous carbon@NiCo_(2)S_(4)microspheres for high-performance hybrid supercapacitors

作     者：Kai Yuan Teng-Jia Gao Yang Yang Wang Luo Shun Li Chao-Yang Zhang Jian-Xiong Xu Na Li Yi-Rong Zhu Kai Yuan;Teng-Jia Gao;Yang Yang;Wang Luo;Shun Li;Chao-Yang Zhang;Jian-Xiong Xu;Na Li;Yi-Rong Zhu

作者机构：Hunan Key Laboratory of Electrochemical Green Metallurgy TechnologyCollege of Materials and Advanced ManufacturingHunan University of TechnologyZhuzhou 412007China Hunan Key Laboratory of Biomedical Nanomaterials and DevicesCollege of Life Sciences and ChemistryHunan University of TechnologyZhuzhou 412007China School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2023年第42卷第8期

页      面：2643-2657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] 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：financially supported by the National Natural Science Foundation of China(No.52174247) the Distinguish Young Scientists of Hunan province(No.2022JJ10024) "Hejian"Innovative Talent Project of Hunan Province(No.2022RC1088) the Natural Science Foundation of Hunan Province(Nos.2021JJ30212 and 2021JJ30216) the Scientific Research and Innovation Foundation of Hunan University of Technology(No.CX2209) 

主　　题：Hybrid supercapacitors(HSCs) NiCo_(2)S_(4) Hierarchical nanoporous carbon(HNC) Template sacrificial method 

摘      要：Binary transition metal sulfides are hotly investigated in advanced energy storage devices because of their ultra-high reversible ***,the unsatisfied rate capability and cycling stability still hinder their practical ***,hierarchical nanoporous carbon@NiCo_(2)S_(4)(HNCMs@NCS)composites with coreshell flower-like structures were prepared by in situ growing of NiCo_(2)S_(4) nanosheets on HNCMs through a hydro thermal-as sis ted template sacrificial *** from a synergistic effect between the NiCo_(2)S_(4)shell with high specific capacity and the HNCMs with unique porous structure,the synthesized flower-like HNCMs@NCS composites exhibit extraordinary electrochemical performances,including a high capacity of 346.9 mAh·g^(-1)at 1 A·g^(-1),superb rate property with86.4%initial capacity at 30 A·g^(-1)and predominant cycle stability with 81.2%capacity retention after 5000 ***,the resulting HNCMs@NCS cathode was coupled with the chemical-activated HNCMs(AHNCMs)anode to construct a hybrid supercapacitor *** asfabricated device exhibits superior energy density(49.9 Wh·kg^(-1)at 802 W·kg^(-1))and ultra-high power density(24 kW·kg^(-1)at 29.5 Wh·kg^(-1)).This fascinating result further demonstrates the tremendous prospect of the synthesized HNCMs@NCS composites as high-performance supercapacitor electrode materials.