Co7Se8 Nanostructures as Catalysts for Oxygen Reduction Reaction with High Methanol Tolerance

Author

Jahangir Masud
Manashi Nath, Missouri University of Science and TechnologyFollow

Abstract

Co₇Se₈ nanostructures electrodeposited on glassy carbon (GC) electrodes show high efficiency for oxygen reduction reaction (ORR) with high methanol tolerance as compared to Pt electrocatalysts. In the presence of methanol, the onset potential for the ORR at Pt/GC is shifted from 0.931 V (vs reversible hydrogen electrode (RHE)) to 0.801 V (vs RHE), whereas it remains the same (0.811 V vs RHE) at Co₇Se₈/GC in the presence and absence of methanol in 0.5 M H₂SO₄ solution. The Co₇Se₈/GC electrodes also showed high cyclability in the presence of methanol, with no degradation of catalytic performance. It is also noteworthy that the Co₇Se₈/GC exhibited exclusively a four-electron reduction pathway for ORR and very low H₂O₂ yield in acidic electrolyte. The admirable performance of Co₇Se₈/GC catalyst along with its cost-effective nature holds great potential for application in direct methanol fuel cells.

Recommended Citation

J. Masud and M. Nath, "Co7Se8 Nanostructures as Catalysts for Oxygen Reduction Reaction with High Methanol Tolerance," ACS Energy Letters, vol. 1, no. 1, pp. 27 - 31, American Chemical Society, Jul 2016.

The definitive version is available at https://doi.org/10.1021/acsenergylett.6b00006

Department(s)

Chemistry

Publication Status

Open Access

Comments

American Chemical Society Petroleum Research Fund, Grant 54793-ND10

International Standard Serial Number (ISSN)

2380-8195

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Chemical Society, All rights reserved.

Publication Date

08 Jul 2016