Enhanced Electrocatalytic Activity for Water Splitting on NiO/Ni/Carbon Fiber Paper
by
Ruoyu Zhang 1,2, Hehe Wei 2, Wenjie Si 2, Gang Ou 2,3, Chunsong Zhao 2, Mingjun Song 2, Cheng Zhang 1,* and Hui Wu 2
Ruoyu Zhang 1,2, Hehe Wei 2, Wenjie Si 2, Gang Ou 2,3, Chunsong Zhao 2, Mingjun Song 2, Cheng Zhang 1,* and Hui Wu 2
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
Materials 2017, 10(1), 15; https://doi.org/10.3390/ma10010015
Received: 3 November 2016 / Revised: 20 December 2016 / Accepted: 22 December 2016 / Published: 28 December 2016
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.
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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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