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Gas-templating of hierarchically structured Ni-Co-P for efficient electrocatalytic hydrogen evolution
KTH, School of Chemical Science and Engineering (CHE), Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry.
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2017 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 5, no 16, 7564-7570 p.Article in journal (Refereed) Published
Abstract [en]

One of the grand challenges for developing scalable and sustainable hydrogen producing systems is the lack of efficient and robust earth-abundant element based catalysts for the hydrogen evolution reaction (HER). Herein, a hierarchically structured Ni-Co-P film was fabricated via a gas templating electro-deposition method. This film exhibits remarkably high catalytic performance for the HER in 1 M KOH with respective current densities of -10 and -500 mA cm(-2) at the overpotentials of -30 and -185 mV with a Tafel slope of 41 mV dec(-1). A controlled potential electrolysis experiment demonstrates that the as-prepared Ni-Co-P film is an efficient and robust catalyst with a faradaic efficiency close to 100%. Systematic characterization suggests that the unique hierarchical structure and the mutual participation of nano-sized Ni/Co based components are responsible for the high HER catalytic activity.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY , 2017. Vol. 5, no 16, 7564-7570 p.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-206680DOI: 10.1039/c7ta01716bISI: 000399390300036OAI: oai:DiVA.org:kth-206680DiVA: diva2:1094478
Note

QC 20170510

Available from: 2017-05-10 Created: 2017-05-10 Last updated: 2017-05-10Bibliographically approved

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Zhang, PeiliChen, HongZhang, BiaobiaoDuan, LeleDaniel, QuentinLi, FushengSun, Licheng
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