文献类型：期刊文献

英文题名：Micro-Spatial Hydrothermal Preparation of Nitrogen-doped Carbon/NiCo2S4 Electrode Material for Supercapacitors

作者：Niu, Qingyuan[1] Feng, Zixin[1] Gao, Kezheng[1] Tang, Qiheng[2] Sun, Xiankai[3] Wang, Lizhen[1]

第一作者：Niu, Qingyuan

通信作者：Gao, KZ[1];Wang, LZ[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

年份：2021

卷号：50

期号：8

起止页码：4915-4923

外文期刊名：JOURNAL OF ELECTRONIC MATERIALS

收录：;EI(收录号：20212410490134);Scopus(收录号：2-s2.0-85107606918);WOS:【SCI-EXPANDED(收录号:WOS:000658606200004)】；

基金：Financial support was kindly supplied by grants from National Natural Science Foundation of China (no. 21601162) and the Special project of basic research for key scientific research projects of colleges and universities in Henan Province (20ZX008).

语种：英文

外文关键词：Nitrogen-doped carbon; NiCo2S4; micro-space hydrothermal; Auricularia; electrochemical performance

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] .