Metal-Organic-Framework-Derived Yolk-Shell-Structured Cobalt-Based Bimetallic Oxide Polyhedron with High Activity for Electrocatalytic Oxygen Evolution

Zhou Yu; Yu Bai; Yuxuan Liu; Shimin Zhang; Dandan Chen; Naiqing Zhang; Kening Sun

doi:10.1021/acsami.7b07000

Metal-Organic-Framework-Derived Yolk-Shell-Structured Cobalt-Based Bimetallic Oxide Polyhedron with High Activity for Electrocatalytic Oxygen Evolution

ACS Appl Mater Interfaces. 2017 Sep 20;9(37):31777-31785. doi: 10.1021/acsami.7b07000. Epub 2017 Sep 6.

Authors

Zhou Yu^{1

2}, Yu Bai^{2

3}, Yuxuan Liu¹, Shimin Zhang¹, Dandan Chen¹, Naiqing Zhang^{2

4}, Kening Sun^{2

4}

Affiliations

¹ School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin, 150090, P. R. China.
² Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology , Harbin, 150090, P. R. China.
³ Advanced Research Institute for Multidisciplinary Science, Beijing Institute of Technology , Beijing, 100081, P. R. China.
⁴ State Key laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , Harbin, 150090, P. R. China.

PMID: 28832103
DOI: 10.1021/acsami.7b07000

Abstract

The development of inexpensive, efficient, and environmentally friendly catalysts for oxygen evolution reaction (OER) is of great significant for green energy utilization. Herein, binary metal oxides (M_xCo_3-xO₄, M = Zn, Ni, and Cu) with yolk-shell polyhedron (YSP) structure were fabricated by facile pyrolysis of bimetallic zeolitic imidazolate frameworks (MCo-ZIFs). Benefiting from the synergistic effects of metal ions and the unique yolk-shell structure, M_xCo_3-xO₄ YSP displays good OER catalytic activity in alkaline media. Impressively, Zn_xCo_3-xO₄ YSP shows a comparable overpotential of 337 mV at 10 mA cm^-2 to commercial RuO₂ and exhibits superior long-term durability. The high activity and good stability reveals its promising application.

Keywords: alkaline media; bimetallic; binary metal oxide; oxygen evolution reaction; yolk−shell; zeolitic imidazolate frameworks.