Efficient hydrogen production on MoNi4 electrocatalysts with fast water dissociation kinetics

Jian Zhang, Tao Wang, Pan Liu, Zhongquan Liao, Shaohua Liu, Xiaodong Zhuang, Mingwei Chen, Ehrenfried Zschech and Xinliang Feng ()
Additional contact information
Jian Zhang: Technische Universitaet Dresden
Tao Wang: Univ Lyon, Ens de Lyon, CNRS, Université Lyon 1, Laboratoire de Chimie, UMR 5182
Pan Liu: WPI Advanced Institute for Materials Research, Tohoku University
Zhongquan Liao: Fraunhofer Institute for Ceramic Technologies and Systems (IKTS)
Shaohua Liu: Technische Universitaet Dresden
Xiaodong Zhuang: Technische Universitaet Dresden
Mingwei Chen: WPI Advanced Institute for Materials Research, Tohoku University
Ehrenfried Zschech: Fraunhofer Institute for Ceramic Technologies and Systems (IKTS)
Xinliang Feng: Technische Universitaet Dresden

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract Various platinum-free electrocatalysts have been explored for hydrogen evolution reaction in acidic solutions. However, in economical water-alkali electrolysers, sluggish water dissociation kinetics (Volmer step) on platinum-free electrocatalysts results in poor hydrogen-production activities. Here we report a MoNi4 electrocatalyst supported by MoO2 cuboids on nickel foam (MoNi4/MoO2@Ni), which is constructed by controlling the outward diffusion of nickel atoms on annealing precursor NiMoO4 cuboids on nickel foam. Experimental and theoretical results confirm that a rapid Tafel-step-decided hydrogen evolution proceeds on MoNi4 electrocatalyst. As a result, the MoNi4 electrocatalyst exhibits zero onset overpotential, an overpotential of 15 mV at 10 mA cm−2 and a low Tafel slope of 30 mV per decade in 1 M potassium hydroxide electrolyte, which are comparable to the results for platinum and superior to those for state-of-the-art platinum-free electrocatalysts. Benefiting from its scalable preparation and stability, the MoNi4 electrocatalyst is promising for practical water-alkali electrolysers.

Date: 2017
References: Add references at CitEc
Citations: View citations in EconPapers (7)

Downloads: (external link)
https://www.nature.com/articles/ncomms15437 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15437

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms15437

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().