Intramolecular electronic coupling in porous iron cobalt (oxy)phosphide nanoboxes enhances the electrocatalytic activity for oxygen evolution

Huabin Zhang, Wei Zhou, Juncai Dong, Xue Feng Lu, Xiong Wen David Lou

Research output: Contribution to journalArticlepeer-review

179 Scopus citations

Abstract

Efficient electrocatalysts are of great importance in improving the water splitting efficiency. Herein, we develop a self-Templating strategy to construct porous iron cobalt (oxy)phosphide (Fe-Co-P) nanoboxes as promising pre-catalysts for the oxygen evolution reaction in alkaline solution. The constructed Fe-Co-P nanoboxes exhibit excellent electrocatalytic activity and afford a current density of 10 mA cm-2 at a small overpotential of 269 mV. Moreover, the structural evolution of the metal phosphides in the oxygen evolution process has been well monitored. X-ray absorption near-edge structure analyses and computational studies reveal that the structural merits and the effective intramolecular electronic coupling between the Fe and Co atoms via P/O bridges are responsible for the greatly improved electrocatalytic activity.
Original languageEnglish (US)
Pages (from-to)3348-3355
Number of pages8
JournalEnergy and Environmental Science
Volume12
Issue number11
DOIs
StatePublished - Nov 1 2019
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-15

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