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Porous aluminum electrodes with 3D channels and zig-zag edges for efficient hydrogen evolution

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Abstract

An eco-friendly electrochemical approach, including base and acid treatments, and anodization, has been developed for preparation of defect-rich porous aluminum electrodes for efficient hydrogen evolution. A small Tafel slope value of 43 mV dec−1 reveals improved reaction kinetics through the micropores, 3D channels, and zig-zag edges of the aluminum electrode. It exhibits an onset potential of 460 mV and an overpotential of 580 mV at the current density of 10 mA cm−2 due to the porous and edge structures that enhance the charge transfer and mass transport.

Graphical abstract: Porous aluminum electrodes with 3D channels and zig-zag edges for efficient hydrogen evolution

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Publication details

The article was received on 27 Feb 2019, accepted on 04 Apr 2019 and first published on 04 Apr 2019


Article type: Communication
DOI: 10.1039/C9CC01667H
Citation: Chem. Commun., 2019, Advance Article

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    Porous aluminum electrodes with 3D channels and zig-zag edges for efficient hydrogen evolution

    A. P. Periasamy, P. Sriram, Y. Chen, C. Wu, T. Yen and H. Chang, Chem. Commun., 2019, Advance Article , DOI: 10.1039/C9CC01667H

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