Electrocatalytic water oxidation over AlFe₂B₂.

ABSTRACT: We report excellent electrocatalytic performance by AlFe₂B₂ in the oxygen-evolution reaction (OER). The inexpensive catalytic material, prepared simply by arc-melting followed by ball-milling, exhibits high stability and sustained catalytic performance under alkaline conditions. The overpotential value of 0.24 V observed at the current density of 10 mA cm^-2 remained constant for at least 10 days. Electron microscopy and electron energy loss spectroscopy performed on the initial ball-milled material and on the material activated under electrocatalytic conditions suggest that the catalytic mechanism involves partial leaching of Al from the layered structure of AlFe₂B₂ and the formation of Fe₃O₄ nanoclusters on the e

SUBMITTER: Mann DK 

PROVIDER: S-EPMC6425857 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature