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- Title
Self-Supported Cu-Based Nanowire Arrays as Noble-Metal-Free Electrocatalysts for Oxygen Evolution.
- Authors
Hou, Chun‐Chao; Fu, Wen‐Fu; Chen, Yong
- Abstract
Crystalline Cu-based nanowire arrays (NWAs) including Cu(OH)2, CuO, Cu2O, and CuO x are facilely grown on Cu foil and are found to act as highly efficient, low-cost, and robust electrocatalysts for the oxygen evolution reaction (OER). Impressively, this noble-metal-free 3 D Cu(OH)2-NWAs/Cu foil electrode shows the highest catalytic activity with a Tafel slope of 86 mV dec−1, an overpotential ( η) of about 530 mV at ∼10 mA cm−2 (controlled-potential electrolysis method without iR correction) and almost 100 % Faradic efficiency, paralleling the performance of the state-of-the-art RuO2 OER catalyst in 0.1 m NaOH solution (pH 12.8). To the best of our knowledge, this work represents one of the best results ever reported on Cu-based OER systems.
- Subjects
NANOWIRES; ELECTROCATALYSTS; OXYGEN evolution reactions; ELECTROLYSIS; CATALYSTS
- Publication
ChemSusChem, 2016, Vol 9, Issue 16, p2069
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.201600592