Nanoscale nickel oxide/nickel heterostructures for active hydrogen evolution electrocatalysis
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Open Access
- 22 August 2014
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 5 (1), 4695
- https://doi.org/10.1038/ncomms5695
Abstract
Active, stable and cost-effective electrocatalysts are a key to water splitting for hydrogen production through electrolysis or photoelectrochemistry. Here we report nanoscale nickel oxide/nickel heterostructures formed on carbon nanotube sidewalls as highly effective electrocatalysts for hydrogen evolution reaction with activity similar to platinum. Partially reduced nickel interfaced with nickel oxide results from thermal decomposition of nickel hydroxide precursors bonded to carbon nanotube sidewalls. The metal ion–carbon nanotube interactions impede complete reduction and Ostwald ripening of nickel species into the less hydrogen evolution reaction active pure nickel phase. A water electrolyzer that achieves ~20 mA cm−2 at a voltage of 1.5 V, and which may be operated by a single-cell alkaline battery, is fabricated using cheap, non-precious metal-based electrocatalysts.Keywords
This publication has 28 references indexed in Scilit:
- WS2 nanoflakes from nanotubes for electrocatalysisNano Research, 2013
- A comprehensive review on PEM water electrolysisInternational Journal of Hydrogen Energy, 2013
- Mesoporous Co3O4 as an electrocatalyst for water oxidationNano Research, 2012
- The Artificial LeafAccounts of Chemical Research, 2012
- A Perovskite Oxide Optimized for Oxygen Evolution Catalysis from Molecular Orbital PrinciplesScience, 2011
- Solar Water Splitting CellsChemical Reviews, 2010
- Recent progress in alkaline water electrolysis for hydrogen production and applicationsProgress in Energy and Combustion Science, 2010
- An overview of hydrogen production technologiesCatalysis Today, 2008
- The Hydrogen EconomyPhysics Today, 2004
- Alternative energy technologiesNature, 2001