Potentiostatic phase formation of β-CoOOH on pulsed laser deposited biphasic cobalt oxide thin film for enhanced oxygen evolution

Abstract

Atomic layer fabrication of biphasic spinel Co₃O₄and CoO on an FTO substrate through pulsed laser deposition was achieved and the fabricated Co<italic>x</italic>O<italic>y</italic>interface was found to undergo tremendous surface construction under an applied potential which eventually increased the activity by reducing the overpotential by 55 mV.