Superb water splitting activity of the electrocatalyst Fe₃Co(PO₄)₄ designed with computation aid.

ABSTRACT: For efficient water splitting, it is essential to develop inexpensive and super-efficient electrocatalysts for the oxygen evolution reaction (OER). Herein, we report a phosphate-based electrocatalyst [Fe₃Co(PO₄)₄@reduced-graphene-oxide(rGO)] showing outstanding OER performance (much higher than state-of-the-art Ir/C catalysts), the design of which was aided by first-principles calculations. This electrocatalyst displays low overpotential (237 mV at high current density 100 mA cm^-2 in 1 M KOH), high turnover frequency (TOF: 0.54 s^-1), high Faradaic efficiency (98%), and long-term durability. Its remarkable performance is ascribed to the optimal free energy for OER at Fe sites and efficient mass/charge transfer. When a Fe₃Co(P

SUBMITTER: Sultan S 

PROVIDER: S-EPMC6858335 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature