Graphene-based electrode materials for microbial fuel cells

Abstract

Microbial fuel cells (MFCs) are environmentally friendly technology capable of converting chemical energy stored in wastewaters directly into electrical energy by using microorganisms as biocatalysts. However, the overall low power density of the MFC and the high cost of its components are two major barriers for its commercialization. Among all the factors, the electrodes (cathode and anode) materials play the significant role in affecting the performance of MFCs. Recently, the performance of MFCs has been improved by using graphene-based electrodes that are more conductive and mechanically stable with larger surface area and higher electrocatalytic activity compared to the conventional carbon materials. This paper provides an overview of recent research progress in graphene-based materials as electrodes for MFCs, which will be the promising candidates for developing MFCs and other bioelectrochemical systems to achieve sustainable water/wastewater treatment and bioenergy production.

Innovative multi‐processed N‐doped carbon and Fe 3 O 4 cathode for enhanced bioelectro‐Fenton microbial fuel cell performance

“…It was then heated for 30 minutes at 50°C to form GO/CC electrode. As a two‐dimensional carbon nanomaterial, graphene has been widely used to increase MFC performance because of its large surface area, high electrical conductivity, good biocompatibility and high chemical stability, which have made it suitable for MFC anode materials. The anode electrode of the control MFC reactor was pretreated CC.…”

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

“…Moreover, through well-planned and executed chemical modifications, the surface characteristics of graphene can be tuned to reach novel graphene-based materials which embody remarkably feasible functionalization which eventually expand the scope of applications of these materials (Faraldos and Bahamonde 2017). To name a few, property-tuned graphene-type materials can find interesting uses in adsorption of environmental contaminants (Bai et al 2012;Fakhri et al 2017), thermal energy storage (Mehrali et al 2013), catalysis (Li et al 2010;Sun et al 2012;Indrawirawan et al 2015), biomass and organic biomolecules conversion (Zhu et al 2015;Hou et al 2016), bioenergy production processes (Ci et al 2015) and nanomedical therapies (Rahmanian et al 2017).…”

Graphene as Electrode Material for the Greater Power Generation in Microbial Fuel Cell

“…Some of the limitations are taken care of by using a series of design concepts for MFC. In spite of many challenges, grapheme-modified electrodes are proved as promising for MFC development and decreased BOD levels inorganic waste by converting it into electrical energy [3]. Currently, the function materials and their applications have attracted the most attention due to their outstanding properties concerning the bio electro catalytic degradation of organic molecules in organic wastes [4] Graphene Electronic properties of Grapheme is one of the most useful properties, it has high electrical and is among the strongest substances known.…”