Bimetallic phosphide hollow nanocubes derived from a prussian-blue-analog used as high-performance catalysts for the oxygen evolution reaction

Content Provider	Semantic Scholar
Author	Zou, Honghong Yuan, Cheng-Zong Zou, Hongyan Cheang, Tuck-Yun Zhao, Shengjie Qazi, Umair Yaqub Zhong, Shengliang Wang, Lei
Copyright Year	2017
Abstract	The development of efficient and stable electrocatalysts for the oxygen evolution reaction (OER) based on earth-abundant materials is of significance to enable water splitting as a feasible source of alternative energy. Metal–organic frameworks (MOFs) have been intensively employed as the templates/precursors to synthesize catalysts with hollow structures for various energy-related applications. In this study, using MOF (Ni–Fe prussian-blue-analog) as a template and precursor, a novel and promising bimetallic phosphide catalyst (Ni0.62Fe0.38)2P was obtained. Benefiting from synergistic effect between the Ni and Fe species, well-defined architecture and high surface area the as-made (Ni0.62Fe0.38)2P hollow nanocubes show a remarkable electrocatalytic performance for the OER in 1 M KOH electrolyte with a low overpotential of only 290 mV at a current density of 10 mA cm−2 and a small Tafel slope of 44 mV per decade, which even surpass the benchmark IrO2 catalyst. Moreover, the (Ni0.62Fe0.38)2P hollow nanocubes exhibit good long-term stability. This facile and novel route to prepare bimetallic phosphide hollow nanocubes as active OER catalysts broadens the scope for designing other noble-metal-free OER efficient catalysts for electrochemical water splitting in the future.
Starting Page	1549
Ending Page	1555
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1039/C7CY00035A
Volume Number	7
Alternate Webpage(s)	http://www.rsc.org/suppdata/c7/cy/c7cy00035a/c7cy00035a1.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C7CY00035A
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article