Confined carburization-engineered synthesis of ultrathin nickel oxide/nickel heterostructured nanosheets for enhanced oxygen evolution reaction

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

6 Scopus Citations
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Author(s)

  • Tianyu Zhang
  • Chaojun Lei
  • Bin Yang
  • Zhongjian Li
  • Jian Chen
  • Chris Yuan
  • Lecheng Lei
  • Yang Hou

Detail(s)

Original languageEnglish
Pages (from-to)22261-22269
Journal / PublicationNanoscale
Volume11
Issue number46
Online published5 Nov 2019
Publication statusPublished - 14 Dec 2019

Abstract

Low-cost and highly effective transition metal oxides are being widely researched as one of the most promising electrocatalysts for the oxygen evolution reaction (OER). However, traditional transition metal oxides suffer from sluggish reaction kinetics due to their intrinsically poor electronic conductivity. Herein, we demonstrate a facile polydopamine-assisted carburization strategy for the confined synthesis of novel NiOx/Ni ultrathin heterostructured nanosheets. Benefiting from the large exposed surface area and fast charge transfer, the obtained ultrathin NiOx/Ni heterostructured nanosheets exhibit an overpotential of 358 mV at a current density of 10 mA cm-2 and a small Tafel slope of 51 mV dec-1, outperforming other reported representative nickel oxide based materials and commercial Ir/C catalysts. In addition, a sustainable and efficient overall water-splitting electrolyzer integrated ultrathin NiOx/Ni nanosheets with commercial Pt/C can be effectively and stably driven by solar cells.

Citation Format(s)

Confined carburization-engineered synthesis of ultrathin nickel oxide/nickel heterostructured nanosheets for enhanced oxygen evolution reaction. / Quan, Quan; Zhang, Tianyu; Lei, Chaojun; Yang, Bin; Li, Zhongjian; Chen, Jian; Yuan, Chris; Lei, Lecheng; Hou, Yang.

In: Nanoscale, Vol. 11, No. 46, 14.12.2019, p. 22261-22269.

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