Using rhodium as a cathode catalyst for enhancing performance of microbial fuel cell

G. D. Bhowmick, S. Das, K. Adhikary, M. M. Ghangrekar, A. Mitra

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

Rhodium with activated carbon as carbon base layer (Rh/AC) was exploited as an oxygen reduction reaction (ORR) catalyst to explore its applicability in microbial fuel cell (MFC). Four MFCs were fabricated using the Rh/AC catalyst, adopting varying Rh loadings of 0.5, 1.0 and 2.0 mg cm−2 and without Rh on carbon felt cathode in order to understand the optimum loading of this catalyst to enhance the performance of MFC. The participation of Rh/AC in ORR was confirmed by cyclic voltammetry and electron impedance spectroscopy analysis, which supported the enhanced charge transfer capacity of the cathode modified with the prepared catalysts. Volumetric power density of MFC was found to be improved by 2.6 times when Rh/AC was used as cathode catalyst (9.36 W m−3) at a loading of 2.0 mg cm−2 in comparison to the control MFC (3.65 W m−3) without Rh on the cathode. It was thus inferred that the increase in the Rh loading up to 2 mg cm−2 can improve the performance of MFC significantly.

Original languageEnglish
Pages (from-to)22218-22222
Number of pages5
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number39
DOIs
StatePublished - 13 Aug 2019
Externally publishedYes

Keywords

  • Microbial fuel cell
  • Oxygen reduction reaction
  • Renewable energy
  • Rhodium
  • Wastewater treatment

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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