articleAngewandte Chemie International EditionOct 6, 2015Closed access

Metallic Co 4 N Porous Nanowire Arrays Activated by Surface Oxidation as Electrocatalysts for the Oxygen Evolution Reaction

PCPengzuo ChenKXKun XuZFZhiwei FangYTYun TongJWJunchi Wu

University of Science and Technology of China · Collaborative Innovation Center of Chemistry for Energy Materials

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Abstract

Designing highly efficient electrocatalysts for oxygen evolution reaction (OER) plays a key role in the development of various renewable energy storage and conversion devices. In this work, we developed metallic Co4N porous nanowire arrays directly grown on flexible substrates as highly active OER electrocatalysts for the first time. Benefiting from the collaborative advantages of metallic character, 1D porous nanowire arrays, and unique 3D electrode configuration, surface oxidation activated Co4N porous nanowire arrays/carbon cloth achieved an extremely small overpotential of 257 mV at a current density of 10 mA cm(-2), and a low Tafel slope of 44 mV dec(-1) in an alkaline medium, which is the best OER…

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Topics & keywords

Topics
Keywords
  • Nanowire
  • Oxygen evolution
  • Materials science
  • Metal
  • Porosity
  • Oxygen
  • Chemical engineering
  • Nanotechnology
UN Sustainable Development Goals
  • Affordable and clean energy
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