Three-Dimensionally Ordered Macro-/Mesoporous Ni as a Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction

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Three-Dimensionally Ordered Macro-/Mesoporous Ni as a Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction

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Title: Three-Dimensionally Ordered Macro-/Mesoporous Ni as a Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction
Author(s):
Sun, T.;
Zhang, C.;
Chen, J.;
Yan, Y.;
Zakhidov, Anvar A. (UT Dallas);
Baughman, Ray H. (UT Dallas);
Xu, L.
Format: Text
Item Type: Article
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Abstract: Three-dimensionally (3D) ordered macro-/mesoporous (3DOM/m) Ni is fabricated by the chemical reduction deposition method using lyotropic liquid crystals (LLC) to template the mesostructure within the regular voids of a colloidal crystal (opal). The thereby achieved structural advantages of combining well-ordered bicontinuous mesopores with 3D interconnected periodic macropores, such as abundant exposed catalytically active sites, efficient mass transport, and high electrical conductivity, make this non-noble metal structure an excellent hydrogen evolution reaction (HER) electrocatalyst. The 3DOM/m Ni exhibits a low onset overpotential of 63 mV (vs. RHE) and a small Tafel slope of 52 mV per decade, as well as a long-term durability in alkaline medium. These distinct features of the 3DOM/m Ni render it a promising alternative to Pt-based HER electrocatalysts. This journal is © The Royal Society of Chemistry 2015.
Publisher: Royal Society of Chemistry
ISSN: 2050-7488
Persistent Link: http://hdl.handle.net/10735.1/5106
http://dx.doi.org/10.1039/c5ta01383f
Bibliographic Citation: Sun, T., C. Zhang, J. Chen, Y. Yan, et al. 2015. "Three-dimensionally ordered macro-/mesoporous Ni as a highly efficient electrocatalyst for the hydrogen evolution reaction." Journal of Materials Chemistry A 3(21), doi: 10.1039/c5ta01383f
Terms of Use: CC BY 3.0 (Attribution) License
©2015 The Royal Society of Chemistry. This article may not be further made available or distributed.
Sponsors: Support provided by the National Natural Science Foundation of China (51172014 and 20971012), and the National 973 Program of China (2009CB219903).

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