Issue 8, 2022, Issue in Progress

In situ integration of cobalt diselenide nanoparticles on CNTs realizing durable hydrogen evolution

Abstract

Cobalt diselenide (CoSe2) is considered to be a promising economical and efficient electrocatalyst for the hydrogen evolution reaction (HER). Here carbon nanotubes (CNTs) were employed as a conductive skeleton to optimize the electrocatalytic performance of CoSe2 through a simple one-step hydrothermal method. Beyond the expected, the introduction of CNTs not only accelerates electron transportation and ion diffusion, but also improves the reaction kinetics for HER by forming a CoSe2/CNT heterointerface. Consequently, the CoSe2/CNTs composite exhibits an optimal overpotential of 153 mV with a weight ratio of 10 : 1, and sustains a long period of 48 hours with an negligible overpotential deterioration. In addition, a Faraday efficiency of 97.67% is achieved with a H2/O2 molar ratio of 2 : 1. Therefore, these results open up further opportunities for yielding efficient and durable hydrogen evolving electrocatalysts from low-cost transition metal compounds.

Graphical abstract: In situ integration of cobalt diselenide nanoparticles on CNTs realizing durable hydrogen evolution

Supplementary files

Article information

Article type
Paper
Submitted
30 Sep 2021
Accepted
22 Dec 2021
First published
03 Feb 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 4446-4454

In situ integration of cobalt diselenide nanoparticles on CNTs realizing durable hydrogen evolution

H. Ye, X. Zhou, Z. Shao, J. Yao, W. Ma, L. Wu and X. Ma, RSC Adv., 2022, 12, 4446 DOI: 10.1039/D1RA07301J

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