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Updated: Jan 22, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
A Pt-free graphenaceous composite as an electro-catalyst for efficient oxygen reduction reaction
Bathinapatla Sravani1, H Maseed2, Chandrasekhar Y2
1Nanoelectrochemistry Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa - 516 005, Andhra Pradesh, India. sarma7@yogivemanauniversity.ac.in.
Abstract:
Use of Pt-based electro-catalysts for the oxygen reduction reaction (ORR) is a major hindrance in large-scale application of proton exchange membrane fuel cells (PEMFCs). Hence, new, cost-effective and high performance electro-catalysts are required for the commercial success of PEMFCs. In this work, a Pt-free magnesium oxide (MgO) decorated multi-layered reduced graphene oxide (MLGO) composite is tested as an electro-catalyst for the ORR. The ORR activity of MgO/MLGO in terms of diffusion-controlled current density is found to be superior (6.63 mA per cm2-geo) than that of in-house prepared Pt/rGO (5.96 mA per cm2-geo) and commercial Pt/C (5.02 mA per cm2-geo). The applicability of less expensive MgO/MLGO not only provides a new electro-catalyst but also provides a new direction in exploring metal oxide-based electro-catalysts for the ORR.
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