[1]袁菁菁,何光裕,陈海群.三维多级纳米结构CoNi2S4的构筑及其超级电容性能[J].常州大学学报(自然科学版),2023,35(05):1-7.[doi:10.3969/j.issn.2095-0411.2023.05.001]
　YUAN Jingjing,HE Guangyu,CHEN Haiqun.Construction of 3D hierarchical nanostructured CoNi2S4 and its supercapacitor properties[J].Journal of Changzhou University(Natural Science Edition),2023,35(05):1-7.[doi:10.3969/j.issn.2095-0411.2023.05.001]
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三维多级纳米结构CoNi2S4的构筑及其超级电容性能()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第35卷
期数:
2023年05期
页码:
1-7
栏目:
材料科学与工程
出版日期:
2023-09-28

文章信息/Info

Title:
Construction of 3D hierarchical nanostructured CoNi2S4 and its supercapacitor properties
文章编号:
2095-0411(2023)05-0001-07
作者:
袁菁菁; 何光裕; 陈海群
(常州大学 石油化工学院, 江苏 常州 213164)
Author(s):
YUAN Jingjing;  HE Guangyu;  CHEN Haiqun
(School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China)
关键词:
多级纳米结构;  硫化镍钴;  超级电容器;  自组装
Keywords:
hierarchical nanostructures;  nickel cobalt sulfide;  supercapacitor;  self-assembly
分类号:
TB 3
DOI:
10.3969/j.issn.2095-0411.2023.05.001
文献标志码:
A
摘要:
针对超级电容器电极材料比电容量和倍率性能低的问题,提出构筑三维(3D)多级纳米结构电极材料的思路,以提供更多的电化学反应活性位点。以过渡双金属CoNi2S4为研究对象,通过引入结构导向剂,在两步水热法条件下,自组装形成具有3D多级纳米结构的电极材料。该结构由无数纳米纤维从内芯到外表面相互交织而成,构成稳定的直径约为2μm的纳米球。该3D多级纳米结构的比表面积为22.9 m2/g,且分布了孔径为5～20 nm的纳米孔。作为超级电容器电极材料,CoNi2S4材料表现出1 299.4 F/g的比电容,即使在50 A/g的超高电流密度下,该电极材料的比电容仍可保留23.8%,显示出优良的比电容量和倍率性能。
Abstract:
In view of the low specific capacitance and rate performance of supercapacitor electrode materials, the idea of constructing three-dimensional(3D)hierarchical nanostructured electrode materials is proposed to provide more active sites for electrochemical reactions. Taking transition bimetallic CoNi2S4 as the research object, the electrode material with 3D hierarchical nanostructure was formed by self-assembly under the condition of introducing structure directing agent and two-step hydrothermal method. The structure consists of countless nanofibers interwoven from the inner core to the outer surface, forming stable nanospheres with a diameter of about 2 μm. The 3D hierarchical nanostructure exhibited a specific surface area of 22.9 m2/g and distributed nanopores with pore sizes ranging from 5—20 nm. When used as a supercapacitor electrode material, the CoNi2S4 material exhibited a specific capacitance of 1 299.4 F/g. Even at an ultra-high current density of 50 A/g, the specific capacitance of the electrode material could still retain 23.8%, showing its excellent specific capacitance and rate performance.

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备注/Memo

备注/Memo:
收稿日期: 2023-03-23。
基金项目: 国家自然科学基金资助项目(22078028, 21978026)。
作者简介: 袁菁菁(1988—), 女, 江苏盐城人, 博士, 工程师。E-mail: yuanjj@cczu.edu.cn
更新日期/Last Update: 1900-01-01