Integrating CoNiSe2 Nanorod-arrays onto N-doped Sea-sponge-C spheres for highly efficient electrocatalysis of hydrogen evolution reaction

Wang, Zifang, Tian, Yakun, Wen, Ming, Wu, Qingsheng, Zhu, Quanjing and Fu, Yong Qing (2022) Integrating CoNiSe2 Nanorod-arrays onto N-doped Sea-sponge-C spheres for highly efficient electrocatalysis of hydrogen evolution reaction. Chemical Engineering Journal, 446 (4). p. 137335. ISSN 1385-8947

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Official URL: https://doi.org/10.1016/j.cej.2022.137335

Abstract

A key issue for enhancing performance of hydrogen evolution reaction (HER) by utilizing seawater for sustainable clean energy is to develop a highly efficient, stable and economical electrocatalyst. Herein, a uniquely hierarchical nanostructure of CoNiSe2 nanorod-arrays (NRAs) integrated onto N-doped sea-sponge-carbon spheres (CoNiSe2/N-SSCSs) was designed and synthesized using successive ultrasonic spray pyrolysis (USP) and solvothermal - hydrothermal selenization (SHS) processes. Attributed to intrinsic HER activity of CoNiSe2 NRAs together with effective electron-transfer and ion-diffusion pathways of N-SSCSs, the CoNiSe2/N-SSCSs nanocomposites exhibited highly stable HER electrocatalytic performances in both alkaline electrolytes and alkaline simulated seawater. The required overpotential is as low as 88 mV with a Tafel slope of 83 mV dec−1 at 10 mA cm−2 in 1.0 M KOH, which are comparable to the electrode of commercial Pt/C (η10 = 35 mV & b = 58 mV dec−1).

Item Type: Article
Additional Information: Funding information: This work was financially supported by the National Natural Science Foundation of China (NSFC, 22171212), Science and Technology Committee of Shanghai Municipality by China (21160710300, 19DZ2271500), International Exchange Grant through Royal Society UK and NSFC (201078).
Uncontrolled Keywords: CoNiSe2 nanorod-arrays, Sea-sponge-C, Hydrogen evolution reaction, Electrocatalysis, Seawater
Subjects: H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Rachel Branson
Date Deposited: 14 Jun 2022 13:42
Last Modified: 14 Jun 2022 13:45
URI: http://nrl.northumbria.ac.uk/id/eprint/49309

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