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Open AccessCommunication
Materials 2017, 10(1), 15; doi:10.3390/ma10010015

Enhanced Electrocatalytic Activity for Water Splitting on NiO/Ni/Carbon Fiber Paper

1
School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China
2
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
3
Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University, Beijing 100084, China
*
Author to whom correspondence should be addressed.
Academic Editor: Greta Ricarda Patzke
Received: 3 November 2016 / Revised: 20 December 2016 / Accepted: 22 December 2016 / Published: 28 December 2016
View Full-Text   |   Download PDF [2198 KB, uploaded 28 December 2016]   |  

Abstract

Large-scale growth of low-cost, efficient, and durable non-noble metal-based electrocatalysts for water splitting is crucial for future renewable energy systems. Atomic layer deposition (ALD) provides a promising route for depositing uniform thin coatings of electrocatalysts, which are useful in many technologies, including the splitting of water. In this communication, we report the growth of a NiO/Ni catalyst directly on carbon fiber paper by atomic layer deposition and report subsequent reduction and oxidation annealing treatments. The 10–20 nm NiO/Ni nanoparticle catalysts can reach a current density of 10 mA·cm−2 at an overpotential of 189 mV for hydrogen evolution reactions and 257 mV for oxygen evolution reactions with high stability. We further successfully achieved a water splitting current density of 10 mA·cm−2 at 1.78 V using a typical NiO/Ni coated carbon fiber paper two-electrode setup. The results suggest that nanoparticulate NiO/Ni is an active, stable, and noble-metal-free electrocatalyst, which facilitates a method for future water splitting applications. View Full-Text
Keywords: NiO/Ni nanoparticles; hydrogen evolution reaction; electrocatalyst NiO/Ni nanoparticles; hydrogen evolution reaction; electrocatalyst
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhang, R.; Wei, H.; Si, W.; Ou, G.; Zhao, C.; Song, M.; Zhang, C.; Wu, H. Enhanced Electrocatalytic Activity for Water Splitting on NiO/Ni/Carbon Fiber Paper. Materials 2017, 10, 15.

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