Porphyrinic Metal-Organic Framework-Templated Fe-Ni-P/Reduced Graphene Oxide for Efficient Electrocatalytic Oxygen Evolution

Xinzuo Fang; Long Jiao; Rui Zhang; Hai-Long Jiang

doi:10.1021/acsami.7b07142

Porphyrinic Metal-Organic Framework-Templated Fe-Ni-P/Reduced Graphene Oxide for Efficient Electrocatalytic Oxygen Evolution

ACS Appl Mater Interfaces. 2017 Jul 19;9(28):23852-23858. doi: 10.1021/acsami.7b07142. Epub 2017 Jul 7.

Authors

Xinzuo Fang¹, Long Jiao¹, Rui Zhang¹, Hai-Long Jiang¹

Affiliation

¹ Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China.

PMID: 28653833
DOI: 10.1021/acsami.7b07142

Abstract

The sluggish kinetics of oxygen evolution reaction (OER) hampers the H₂ production by H₂O electrolysis, and it is very important for the development of highly efficient and low-priced OER catalysts. Herein, a representative metalloporphyrinic MOF, PCN-600-Ni, integrated with graphene oxide (GO), serves as an ideal precursor and template to afford bimetallic iron-nickel phosphide/reduced graphene oxide composite (denoted as Fe-Ni-P/rGO-T; T represents pyrolysis temperature) via pyrolysis and subsequent phosphidation process. Thanks to the highly porous structure, the synergetic effect of Fe and Ni elements in bimetallic phosphide, and the good conductivity endowed by rGO, the optimized Fe-Ni-P/rGO-400 exhibits remarkable OER activity in 1 M KOH solution, affording an extremely low overpotential of 240 mV at 10 mA/cm², which is far superior to the commercial IrO₂ and among the best in all non-noble metal-based electrocatalysts.

Keywords: electrocatalysts; oxygen evolution reaction; porous materials; porphyrinic metal−organic framework; transition metal phosphides.