In-situ Selenization of Co-based Metal-Organic Frameworks as a Highly Efficient Electrocatalyst for Hydrogen Evolution Reaction. (1st September 2017)

• Record Type: Journal Article
• Authors: Lin, Jie; He, Jiarui; Qi, Fei; Zheng, Binjie; Wang, Xinqiang; Yu, Bo; Zhou, Keren; Zhang, Wanli; Li, Yanrong; Chen, Yuanfu
• Is Part Of: Electrochimica acta. Volume 247(2017)
• Page Start: 258
• Page End: 264
• Publication Date: 2017-09-01
• Subjects: metal-organic frameworks -- hydrogen evolution reaction -- cobalt diselenide; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.06.179
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Highlights: CoSe2 nanoparticles have been prepared by in-situ selenization of Co-based MOFs. The CoSe2 nanoparticles were anchored into the MOFs architecture with N-doped carbon. The MOF-CoSe2 exhibits excellent catalytic performance for HER. Abstract: Metal-organic frameworks (MOFs) derived cobalt diselenide (MOF-CoSe2 ) constructed with CoSe2 nanoparticles anchored into nitrogen-doped (N-doped) graphitic carbon has been synthesized through in-situ selenization of Co-based MOFs. The obtained MOF-CoSe2 exhibits excellent hydrogen evolution reaction (HER) performance: it shows a small Tafel slope of 42 mV dec −1, a low onset potential of 150 mV; it delivers a high current density and excellent long-term stability. Such enhancement can be attributed to the unique N-doped MOFs derived architecture with high conductivity, which can not only provide abundant active reaction sites, but also ensure robust contact between the CoSe2 nanoparticles and N-doped carbon matrix, leading to outstanding electrocatalytic activity for HER. This study provides a route to prepared non-noble-metal catalyst with high efficiency and excellent electrocatalytic activity for HER.