Next Article in Journal
Lab-Scale Investigation of Palm Shell Char as Tar Reforming Catalyst
Next Article in Special Issue
Study of the Effect of Activated Carbon Cathode Configuration on the Performance of a Membrane-Less Microbial Fuel Cell
Previous Article in Journal
Synthesis and Investigation of Pinane-Based Chiral Tridentate Ligands in the Asymmetric Addition of Diethylzinc to Aldehydes
Previous Article in Special Issue
Self-Nitrogen-Doped Carbon Nanosheets Modification of Anodes for Improving Microbial Fuel Cells’ Performance
Open AccessFeature PaperReview

Platinum Group Metal-Free Catalysts for Oxygen Reduction Reaction: Applications in Microbial Fuel Cells

1
Department of Chemical Science and Technologies; University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy
2
Division of Marine Technology, Tokyo University of Marine Science and Technology, 2-1-6, Etchujima, Koto-ku, Tokyo 135-8533, Japan
*
Author to whom correspondence should be addressed.
Catalysts 2020, 10(5), 475; https://doi.org/10.3390/catal10050475
Received: 8 April 2020 / Revised: 21 April 2020 / Accepted: 23 April 2020 / Published: 26 April 2020
(This article belongs to the Special Issue Catalysts for Microbial Fuel Cells)
Scientific and technological innovation is increasingly playing a role for promoting the transition towards a circular economy and sustainable development. Thanks to its dual function of harvesting energy from waste and cleaning up waste from organic pollutants, microbial fuel cells (MFCs) provide a revolutionary answer to the global environmental challenges. Yet, one key factor that limits the implementation of larger scale MFCs is the high cost and low durability of current electrode materials, owing to the use of platinum at the cathode side. To address this issue, the scientific community has devoted its research efforts for identifying innovative and low cost materials and components to assemble lab-scale MFC prototypes, fed with wastewaters of different nature. This review work summarizes the state-of the-art of developing platinum group metal-free (PGM-free) catalysts for applications at the cathode side of MFCs. We address how different catalyst families boost oxygen reduction reaction (ORR) in neutral pH, as result of an interplay between surface chemistry and morphology on the efficiency of ORR active sites. We particularly review the properties, performance, and applicability of metal-free carbon-based materials, molecular catalysts based on metal macrocycles supported on carbon nanostructures, M-N-C catalysts activated via pyrolysis, metal oxide-based catalysts, and enzyme catalysts. We finally discuss recent progress on MFC cathode design, providing a guidance for improving cathode activity and stability under MFC operating conditions. View Full-Text
Keywords: bioelectrocatalysis; carbon nanostructures; microbial fuel cells; oxygen reduction reaction; platinum group metal-free electrodes bioelectrocatalysis; carbon nanostructures; microbial fuel cells; oxygen reduction reaction; platinum group metal-free electrodes
Show Figures

Graphical abstract

MDPI and ACS Style

Costa de Oliveira, M.A.; D’Epifanio, A.; Ohnuki, H.; Mecheri, B. Platinum Group Metal-Free Catalysts for Oxygen Reduction Reaction: Applications in Microbial Fuel Cells. Catalysts 2020, 10, 475. https://doi.org/10.3390/catal10050475

AMA Style

Costa de Oliveira MA, D’Epifanio A, Ohnuki H, Mecheri B. Platinum Group Metal-Free Catalysts for Oxygen Reduction Reaction: Applications in Microbial Fuel Cells. Catalysts. 2020; 10(5):475. https://doi.org/10.3390/catal10050475

Chicago/Turabian Style

Costa de Oliveira, Maida A.; D’Epifanio, Alessandra; Ohnuki, Hitoshi; Mecheri, Barbara. 2020. "Platinum Group Metal-Free Catalysts for Oxygen Reduction Reaction: Applications in Microbial Fuel Cells" Catalysts 10, no. 5: 475. https://doi.org/10.3390/catal10050475

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop