Plasma-assisted synthesis of nickel-cobalt nitride–oxide hybrids for high-efficiency electrochemical hydrogen evolution

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number100784
Journal / PublicationMaterials Today Energy
Volume21
Online published24 May 2021
Publication statusPublished - Sep 2021

Abstract

The rational design of high-performance electrocatalysts based on nonprecious metals is a key for the development of water-splitting technology. In this work, porous nickel-cobalt nitride–oxide (NiCo–N–O) nanosheet hybrids in a networked configuration are synthesized on carbon cloth through in situ plasma treatment of nickel-cobalt layered double hydroxide (LDH) precursors. The self-supported NiCo–N–O electrodes exhibit the outstanding catalytic activity of hydrogen evolution reaction (HER) with a low overpotential of 50 mV at 10 mA cm−2 in alkaline conditions. The synergistic effects of the morphology, microstructure, and electron transfer between nickel-cobalt nitride and oxide and the favorable role of introducing bimetallic Ni and Co sites on the enhanced electrocatalytic activities are discussed. This work provides a simple and feasible pathway to prepare porous bimetal nitride–oxide hybrid HER electrocatalysts with high efficiency and stability.

Research Area(s)

  • Bimetal nitride–oxide hybrid, Catalytic activity, Hydrogen evolution reaction, In situ plasma treatment, Self-supported cathode

Citation Format(s)

Plasma-assisted synthesis of nickel-cobalt nitride–oxide hybrids for high-efficiency electrochemical hydrogen evolution. / Kong, Xin; Gao, Qili; Bu, Shuyu; Xu, Zian; Shen, Dong; Liu, Bin; Lee, Chun-Sing; Zhang, Wenjun.

In: Materials Today Energy, Vol. 21, 100784, 09.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review