镍钴双金属氢氧化物/乙炔黑复合材料的制备及其电化学性能

doi:10.16085/j.issn.1000-6613.2017-2492

化工进展 ›› 2018, Vol. 37 ›› Issue (11): 4378-4383.DOI: 10.16085/j.issn.1000-6613.2017-2492

镍钴双金属氢氧化物/乙炔黑复合材料的制备及其电化学性能

冯艳艳, 黄宏斌, 杨文, 赖国勇, 赵文君

桂林理工大学化学与生物工程学院广西电磁化学功能物质重点实验室, 广西桂林 541004

收稿日期:2017-12-04 修回日期:2018-01-01 出版日期:2018-11-05 发布日期:2018-11-05
通讯作者: 杨文,博士,讲师,研究方向为能源催化材料。E-mail:yangwen167@163.com。
作者简介:冯艳艳(1988-),女,博士,讲师,研究方向为能源催化材料。E-mail:feng1988glut@163.com。
基金资助:
国家自然科学基金（21606058）、广西自然科学基金（2017GXNSFBA198124和2017GXNSFBA198193）及广西中青年教师基础能力提升项目（2017KY0268）。

Preparation and electrochemical property of Ni-Co layered double hydroxides/acetylene black composites

FENG Yanyan, HUANG Hongbin, YANG Wen, LAI Guoyong, ZHAO Wenjun

Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, Guangxi, China

Received:2017-12-04 Revised:2018-01-01 Online:2018-11-05 Published:2018-11-05

摘要/Abstract

摘要： 以氯化钴和氯化镍作为钴源和镍源，六次甲基四胺作为沉淀剂，采用水热法合成镍钴双金属氢氧化物/乙炔黑复合材料，并研究其作为超级电容器电极材料的储能性能。借助X射线衍射和扫描电镜表征手段研究乙炔黑的加入对所得镍钴双金属氢氧化物复合材料结构和形貌的影响。采用循环伏安、恒电流充放电及循环稳定性等电化学测试手段对该复合材料的储能性能进行研究。结果表明：乙炔黑的加入能有效改善镍钴双金属氢氧化物的分散性，同时降低电极材料的电子转移阻力，进而提高镍钴双金属氢氧化物的储能性能。当电流密度为7A/g时，经过500次恒电流充放电后复合材料的比电容量保持率为97%，体现出较好的循环稳定性能。

关键词: 水热法, 双金属氢氧化物, 乙炔黑, 复合材料, 超级电容器

Abstract: Ni-Co layered double hydroxides/acetylene black composites were synthesized via a simple hydrothermal method using cobalt chloride and nickel chloride as cobalt and nickel sources and hexamethylenetetramine as the precipitant. The composites were then applied as electrode materials of supercapacitor to study their electrochemical performance. The influence of acetylene black on the morphology and structure of Ni-Co layered double hydroxides were characterized by X-ray diffraction and scanning electron microscopy, respectively. The electrochemical performance of the composites was analyzed by electrochemical tests such as cyclic voltammetry, galvanostatic charge and discharge and cyclic stability. The results showed that the addition of acetylene black increased the dispersion of Ni-Co layered double hydroxides, reduced the electron transfer resistance of the electrode materials, giving rise to the enhancements in the capacitive performance. After 500 cycles, the capacitive retention rate of the composite electrode material was 97% at a current density of 7A/g, showing an excellent cyclic stability.

Key words: hydrothermal method, layered double hydroxides, acetylene black, composites, supercapacitor

中图分类号:

O646

冯艳艳, 黄宏斌, 杨文, 赖国勇, 赵文君. 镍钴双金属氢氧化物/乙炔黑复合材料的制备及其电化学性能[J]. 化工进展, 2018, 37(11): 4378-4383.

FENG Yanyan, HUANG Hongbin, YANG Wen, LAI Guoyong, ZHAO Wenjun. Preparation and electrochemical property of Ni-Co layered double hydroxides/acetylene black composites[J]. Chemical Industry and Engineering Progress, 2018, 37(11): 4378-4383.

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镍钴双金属氢氧化物/乙炔黑复合材料的制备及其电化学性能

Preparation and electrochemical property of Ni-Co layered double hydroxides/acetylene black composites

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