Journal
ADVANCED MATERIALS
Volume 29, Issue 22, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201700404
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Funding
- NSFC [21401066, 51522202, 51372007, 21301014, 21371070]
- Jilin Province Science and Technology Development Plans [20150520003JH, 20170101141JC]
- Science and Technology Research Program of Education Department of Jilin Province [410]
- Jilin Province Science and Technology Development Plan [20160101291JC]
- National Basic Research Program of China [2013CB632403]
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Developing nonprecious oxygen evolution electrocatalysts that can work well at large current densities is of primary importance in a viable water-splitting technology. Herein, a facile ultrafast (5 s) synthetic approach is reported that produces a novel, efficient, non-noble metal oxygen-evolution nano-electrocatalyst that is composed of amorphous Ni-Fe bimetallic hydroxide film-coated, nickel foam (NF)-supported, Ni3S2 nanosheet arrays. The composite nanomaterial (denoted as Ni-Fe-OH@Ni3S2/NF) shows highly efficient electrocatalytic activity toward oxygen evolution reaction (OER) at large current densities, even in the order of 1000 mA cm(-2). Ni-Fe-OH@Ni3S2/NF also gives an excellent catalytic stability toward OER both in 1 m KOH solution and in 30 wt% KOH solution. Further experimental results indicate that the effective integration of high catalytic reactivity, high structural stability, and high electronic conductivity into a single material system makes Ni-Fe-OH@Ni3S2/NF a remarkable catalytic ability for OER at large current densities.
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