A review on carbon and non-precious metal based cathode catalysts in microbial fuel cells
| Autor: | Shaik Gouse Peera, Tae Gwan Lee, Shaik Ashmath, Shun Mao, Zhongqing Jiang, Chao Liu, Thandavarayan Maiyalagan |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Microbial fuel cell Renewable Energy Sustainability and the Environment Heteroatom Energy Engineering and Power Technology chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Cathode 0104 chemical sciences Anode Catalysis law.invention Fuel Technology chemistry law 0210 nano-technology Platinum Carbon |
| Zdroj: | International Journal of Hydrogen Energy. 46:3056-3089 |
| ISSN: | 0360-3199 |
| Popis: | Microbial fuel cells, an emerging technology has been paid a great attention in recent years, due to its unique advantages in treating wastewater to portable water, together with the generation of useful electricity, with the help of bio-active anodes and electrochemical cathodes, simultaneously. When applying this technology in a practical scale, the indigenous bacteria present in the wastewater catalyze the breakdown of organic matter in the anode compartment, with generation of electrons and in the cathode compartment an oxidant, usually the oxygen present in the air, take the electron and reduce to water (oxygen reduction reaction, ORR). An ideal ORR catalyst should be highly active, durable, scalable, and most importantly it should be cost effective. Generally, platinum-based catalyst is utilized, however, due to the high cost of Pt based catalysts, many cheap, cost effective catalyst have been identified as efficient ORR catalyst. Carbon based catalysts known to possess good electronic conductivity, desirable surface area, high stability, together when doped with heteroatoms and cheap metals is found to remarkably enhance the ORR activity. Although a lot of research has been done in view of developing carbon based cheap, cost-effective catalysts, still their collective information has not been reviewed. In this article we anticipate reviewing various non-precious metal and metal-free catalysts that are synthesized and investigated for MFCs, factors that affect the ORR activity, catalyst designing strategies, membranes utilized for MFCs, together with the cost comparison of non-precious and metal-free catalysts with respect to Pt based catalysts have been summarized. We anticipate that this review could offer researchers an overview of the catalyst developed so far in the literatures and provides a direction to the young researchers. |
| Databáze: | OpenAIRE |
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