articleJournal of the American Chemical SocietySep 22, 2014GREEN OA

Metal–Organic Framework Derived Hybrid Co 3 O 4 -Carbon Porous Nanowire Arrays as Reversible Oxygen Evolution Electrodes

TMTianyi MaSDSheng DaiMJMietek JaroniecSQShi‐Zhang Qiao

University of Adelaide · Kent State University

PubMed
Indexed incrossrefpubmed

Abstract

Hybrid porous nanowire arrays composed of strongly interacting Co3O4 and carbon were prepared by a facile carbonization of the metal-organic framework grown on Cu foil. The resulting material, possessing a high surface area of 251 m(2) g(-1) and a large carbon content of 52.1 wt %, can be directly used as the working electrode for oxygen evolution reaction without employing extra substrates or binders. This novel oxygen evolution electrode can smoothly operate in alkaline solutions (e.g., 0.1 and 1.0 M KOH), affording a low onset potential of 1.47 V (vs reversible hydrogen electrode) and a stable current density of 10.0 mA cm(-2) at 1.52 V in 0.1 M KOH solution for at least 30 h, associated with a high…

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Topics & keywords

Topics
Keywords
  • Chemistry
  • Nanowire
  • Porosity
  • Electrode
  • Oxygen
  • Carbon fibers
  • Metal-organic framework
  • Oxygen evolution
UN Sustainable Development Goals
  • Industry, innovation and infrastructure
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