Micro-Spatial Hydrothermal Preparation of Nitrogen-doped Carbon/NiCo2S4 Electrode Material for Supercapacitors

被引:1
作者
Niu, Qingyuan [1 ]
Feng, Zixin [1 ]
Gao, Kezheng [1 ]
Tang, Qiheng [2 ]
Sun, Xiankai [3 ]
Wang, Lizhen [1 ]
机构
[1] Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Zhengzhou 450002, Peoples R China
[2] Chinese Acad Forestry, Res Inst Wood Ind, 1 Dongxiaofu, Beijing 100091, Peoples R China
[3] China Natl Bldg Mat Grp, 1 Guan Zhuang Dong Li, Beijing 100024, Peoples R China
基金
中国国家自然科学基金;
关键词
Nitrogen-doped carbon; NiCo2S4; micro-space hydrothermal; Auricularia; electrochemical performance; CARBON-FIBER PAPER; POROUS CARBON; GRAPHENE AEROGEL; ANODE MATERIALS; PERFORMANCE; NICO2S4; NANOSHEETS; ARRAYS; CONSTRUCTION; FABRICATION;
D O I
10.1007/s11664-021-09042-z
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Reasonable combination of carbon and pseudocapacitive material in a composite electrode can produce a high-performance supercapacitor. However, the nano-structured pseudocapacitive materials tend to assemble randomly into microscale bulky forms during the preparation of composite electrode materials, which suffer from a low specific surface area and a mechanically weak structure, resulting in poor electrochemical performance. In this article, a nitrogen-doped carbon/NiCo2S4 electrode material was prepared by micro-spatial hydrothermal reaction in the multicellular microstructure of auricularia. The micro-space-multicellular microstructure of auricularia can provide a huge and efficient nucleation center of NiCo2S4 nanomaterials during the hydrothermal reaction. The morphology of nitrogen-doped carbon/NiCo2S4 electrode material can be effectively controlled by changing the amount of metal ions. The stacked NiCo2S4 nanoparticles of the NC/NiCo2S4-6 electrode material exhibit a network-like structure to a certain extent. The maximum mass specific capacitance of the NC/NiCo2S4-6 electrode material is about 1131 F g(-1) at a current density of 0.25 A g(-1). There is 81.5% retention of its initial capacitance after 10,000 cycles. [GRAPHICS] .
引用
收藏
页码:4915 / 4923
页数:9
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