Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 33, Pages 15942-15946Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta05677c
Keywords
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Funding
- National Natural Science Foundation of China [21776099]
- National Key RD Program [2016YFA0202601]
- Pearl River and S&T Nova Program of Guangzhou [201610010076]
- Fundamental Research Funds for the Central Universities [2017JQ007]
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Frame-like coordination polymers (FCPs) are very promising catalyst materials because of their highly ordered structures and diversified pore surfaces. However, their poor conductivity and stability hinder their application in the field of electrocatalysis. Herein, for the first time, we try to use an FCP such as a Prussian blue analogue (PBA) directly as a catalyst candidate for the oxygen evolution reaction (OER), and report an ingenious confined heat treatment strategy to maximize its electrocatalytic performance. Our synthesized and treated NiFeII-PBA crystals were self-grown on conducting substrates and consisted of small nanocrystals, which enabled them to facilitate electron transport and expose more active sites. As a result, the NiFeII-PBA crystals exhibited an excellent electrocatalytic performance towards oxygen evolution in alkaline media, and an overpotential of only 285 mV is needed to achieve a current density of 50 mA cm(-2).
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