Issue 28, 2019

A Pt-free graphenaceous composite as an electro-catalyst for efficient oxygen reduction reaction

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.

Graphical abstract: A Pt-free graphenaceous composite as an electro-catalyst for efficient oxygen reduction reaction

  • This article is part of the themed collection: Nanocarbons

Article information

Article type
Paper
Submitted
04 abr 2019
Accepted
17 jun 2019
First published
17 jun 2019

Nanoscale, 2019,11, 13300-13308

A Pt-free graphenaceous composite as an electro-catalyst for efficient oxygen reduction reaction

B. Sravani, H. Maseed, C. Y., V. M. R. Y., S. V. V. S. S., G. Madhavi and S. S. L., Nanoscale, 2019, 11, 13300 DOI: 10.1039/C9NR02912E

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