Perovskite Type Lanthanum Oxide and Graphene Oxide (LaFeO3-GO) Composite as (Low Overpotential) ORR Catalyst for Low and High Temperature Fuel Cells

Abstract

Due to depletion of fossil fuel and their environmental effect, renewable resources are the prime interest in which fuel cell technology competes with fossil fuels but their ORR at cathode restrict its efficiency. Perovskite type orthorhombic structure of LaFeO₃ incorporated GO has ability to use as catalyst in low and high temperature fuel cells having non-agglomerated particles in nanometers range (20- 100), high temperature stability, low overpotential of about 0.6V, ECSA of about 13.22 m²g^-1 and current density of about 0.012 mAcm^-1. Results open further research directions in supercapacitors, batteries, biological fuel cells, and applications which requires high temperature stability.