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Related Experiment Video

Updated: Jul 4, 2026

Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site

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Published on: July 24, 2018

An insight into cathode options for microbial fuel cells.

O Lefebvre¹, A Al-Mamun, W K Ooi

¹Division of Environmental Science and Engineering, National University of Singapore, 9 Engineering Dr. 1, Singapore, 117576.

Water Science and Technology : a Journal of the International Association on Water Pollution Research

|July 1, 2008

Summary

Microbial fuel cells offer a sustainable solution for wastewater treatment by removing organic matter and generating electricity. This study explored cost-effective cathode catalysts, finding cobalt competitive with platinum, while biocathodes show future promise.

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Last Updated: Jul 4, 2026

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Waste Water Derived Electroactive Microbial Biofilms: Growth, Maintenance, and Basic Characterization

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Published on: December 29, 2013

Area of Science:

Environmental Science
Electrochemistry
Biotechnology

Background:

Microbial fuel cells (MFCs) are emerging technologies for wastewater treatment, offering simultaneous organic removal and electricity generation.
Conventional MFCs rely on expensive platinum (Pt) catalysts, hindering economic viability.
Developing cost-effective cathode catalysts is crucial for widespread MFC adoption.

Purpose of the Study:

To evaluate alternative cathode catalysts for microbial fuel cells (MFCs).
To compare the performance of sputter-deposited Cobalt (Co) and denitrifying bacteria (biocathodes) against traditional Platinum (Pt) cathodes.

Main Methods:

Fabrication and testing of MFCs with different cathode catalysts: Pt, Co, and biocathodes.
Performance evaluation based on organic removal efficiency and electricity generation.

Main Results:

Cobalt (Co) cathodes demonstrated performance competitive with Platinum (Pt) cathodes.
Biocathodes showed promising results, though further research is needed for optimization.
Both alternative catalysts offer potential for reducing MFC costs.

Conclusions:

Sputter-deposited Cobalt (Co) is a viable alternative to Platinum (Pt) in MFC cathodes.
Biocathodes represent a promising, sustainable avenue for future MFC development.
Reducing catalyst costs is key to advancing MFC technology for wastewater treatment.