Tuning carbon nanotube-grafted core-shell-structured cobalt selenide@carbon hybrids for efficient oxygen evolution reaction

doi:10.1016/j.jcis.2018.08.104

	Tuning carbon nanotube-grafted core-shell-structured cobalt selenide@carbon hybrids for efficient oxygen evolution reaction
	Yuan, Menglei 1,2; Wang, Meng 1,2; Lu, Peilong 1,2; Sun, Yu 3; Dipazir, Sobia 1,2; Zhang, Jingxian 1,2; Li, Shuwei 1; Zhang, Guangjin 1
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2019
卷号	533 页码:503-512
关键词	CoSe2 Zeolite imidazole frameworks Oxygen evolution reaction Alkaline medium
ISSN号	0021-9797
DOI	10.1016/j.jcis.2018.08.104
英文摘要	The electrochemical oxygen evolution reaction (OER) is sparked extensive interest in efficient energy storage and conversion. Cobalt Selenide (CoSe2) is believed to be one of the promising candidates for OER based on Yang Shao-Horn's principle. However, owing to low exposure of active sites and/or low efficiency of electron transfer, the electrocatalytic activity of CoSe2 is far less than expected. In this work, a novel carbon nanotubes (CNT) grafted 3D core-shell structured CoSe2@C-CNT nanohybrid is developed by a general hydrothermal-calcination strategy. Zeolite imidazole frameworks (ZIF) was used as the precursor to synthesis of the materials. It is found that both the calcination temperature and the selenium content can significantly regulate the catalytic performance of the hybrids. The obtained best catalysts requires the overpotential of only 306 mV and 345 mV to reach a current density of 10 mA cm(-2) and 50 mA cm(-2) in 1.0 MKOH medium, respectively. It also exhibits a small Tafel slope of 46 mV dec(-1) and excellent durability, which is superior to most of recently reported CoSe2-based and Co-based materials. These superior performances can be ascribed to synergistic effects of the highly active CoSe2 nanostructure, defect carbon species and the carbon nanotubes exist in the catalyst. Besides, the unique morphology leads to large electrochemical surface area of the catalyst, which is in favor of the exposure of active sites for OER. Due to high efficiency, low cost and excellent durability for OER, the prepared catalysts showed can be potentially used to substitute noble metals utilized in related energy storage and conversion devices. (C) 2018 Elsevier Inc. All rights reserved.
资助项目	National Natural Science Foundation of China[91545125] ; National Natural Science Foundation of China[U1662121] ; Youth Innovation Promotion Association of CAS
WOS关键词	METAL-ORGANIC FRAMEWORK ; NITROGEN-DOPED CARBON ; WATER-OXIDATION ; BIFUNCTIONAL ELECTROCATALYST ; CATALYST ; COSE2 ; NANOSHEETS ; REDUCTION ; NANOPARTICLES ; COMPOSITES
WOS研究方向	Chemistry
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000447815200052
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/26440]
专题	中国科学院过程工程研究所
通讯作者	Zhang, Guangjin
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China 3.North Univ China, Sch Sci, Taiyuan 030051, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Menglei,Wang, Meng,Lu, Peilong,et al. Tuning carbon nanotube-grafted core-shell-structured cobalt selenide@carbon hybrids for efficient oxygen evolution reaction[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2019,533:503-512.
APA	Yuan, Menglei.,Wang, Meng.,Lu, Peilong.,Sun, Yu.,Dipazir, Sobia.,...&Zhang, Guangjin.(2019).Tuning carbon nanotube-grafted core-shell-structured cobalt selenide@carbon hybrids for efficient oxygen evolution reaction.JOURNAL OF COLLOID AND INTERFACE SCIENCE,533,503-512.
MLA	Yuan, Menglei,et al."Tuning carbon nanotube-grafted core-shell-structured cobalt selenide@carbon hybrids for efficient oxygen evolution reaction".JOURNAL OF COLLOID AND INTERFACE SCIENCE 533(2019):503-512.