Opening size optimization of metal matrix in rolling-pressed activated carbon air–cathode for microbial fuel cells

Stainless steel mesh (SSM) with four opening sizes (20–80M) were investigated as matrixes of activated carbon air–cathodes in microbial fuel cells (MFCs). The highest power density of 2151±109mWm−2 (at 5.54±0.14Am−2) was obtained using 40M, with a value 45% higher than 1485±18mWm−2 of 80M. The trend of linear sweep voltammetries were in accordant with power output over a cathodic potential range from −0.2 to 0V. The differences in performance were attributed to the internal resistances. Charge transfer resistance (Rct) was the dominant internal resistance in most of air–cathodes, with the lowest value of 2Ω in 40M. Density of metal mesh exhibited a more significant correlationship with maximum power densities (R2=0.9222) compared to opening size (R2=0.7068), demonstrated that the density of metal current collector was vital to the performance of cathodes.

[1]  Shaoan Cheng,et al.  Air-cathode preparation with activated carbon as catalyst, PTFE as binder and nickel foam as current collector for microbial fuel cells. , 2013, Bioelectrochemistry.

[2]  B. Logan,et al.  Novel anti-flooding poly(dimethylsiloxane) (PDMS) catalyst binder for microbial fuel cell cathodes , 2012 .

[3]  Xin Wang,et al.  Enhanced performance of activated carbon–polytetrafluoroethylene air-cathode by avoidance of sintering on catalyst layer in microbial fuel cells , 2013 .

[4]  D. Park,et al.  Improved fuel cell and electrode designs for producing electricity from microbial degradation. , 2003, Biotechnology and bioengineering.

[5]  J. Alam,et al.  Carbon nanotube as an alternative cathode support and catalyst for microbial fuel cells , 2013 .

[6]  Korneel Rabaey,et al.  Conversion of Wastes into Bioelectricity and Chemicals by Using Microbial Electrochemical Technologies , 2012, Science.

[7]  Peng Liang,et al.  Scaling up a novel denitrifying microbial fuel cell with an oxic-anoxic two stage biocathode , 2013, Frontiers of Environmental Science & Engineering.

[8]  Chin‐Tsan Wang,et al.  Application of aluminum-alloy mesh composite carbon cloth for the design of anode/cathode electrodes in Escherichia coli microbial fuel cell , 2013 .

[9]  Yujie Feng,et al.  Use of carbon mesh anodes and the effect of different pretreatment methods on power production in microbial fuel cells. , 2009, Environmental science & technology.

[10]  N. Ren,et al.  Bioaugmentation for electricity generation from corn stover biomass using microbial fuel cells. , 2009, Environmental science & technology.

[11]  Hong Liu,et al.  Power densities using different cathode catalysts (Pt and CoTMPP) and polymer binders (nafion and PTFE) in single chamber microbial fuel cells. , 2006, Environmental science & technology.

[12]  B. Logan,et al.  Mesh optimization for microbial fuel cell cathodes constructed around stainless steel mesh current collectors , 2011 .

[13]  P. Liang,et al.  Recent progress in electrodes for microbial fuel cells. , 2011, Bioresource technology.

[14]  Zhiyong Ren,et al.  Characterization of microbial fuel cells at microbially and electrochemically meaningful time scales. , 2011, Environmental science & technology.

[15]  Bruce E. Logan,et al.  Increased performance of single-chamber microbial fuel cells using an improved cathode structure , 2006 .

[16]  Qixing Zhou,et al.  Acidic and alkaline pretreatments of activated carbon and their effects on the performance of air-cathodes in microbial fuel cells. , 2013, Bioresource technology.

[17]  Lin Zhao,et al.  Three-dimensional electrode microbial fuel cell for hydrogen peroxide synthesis coupled to wastewater treatment , 2014 .

[18]  Hongbing Yu,et al.  A novel structure of scalable air-cathode without Nafion and Pt by rolling activated carbon and PTFE as catalyst layer in microbial fuel cells. , 2012, Water research.

[19]  Claire Dumas,et al.  Marine microbial fuel cell: Use of stainless steel electrodes as anode and cathode materials , 2007 .

[20]  B. Logan,et al.  Graphite fiber brush anodes for increased power production in air-cathode microbial fuel cells. , 2007, Environmental science & technology.

[21]  Hongbing Yu,et al.  Lack of anodic capacitance causes power overshoot in microbial fuel cells. , 2013, Bioresource technology.

[22]  Fang Zhang,et al.  Power generation using an activated carbon and metal mesh cathode in a microbial fuel cell , 2009 .

[23]  C. Buisman,et al.  Towards practical implementation of bioelectrochemical wastewater treatment. , 2008, Trends in biotechnology.

[24]  Qixing Zhou,et al.  Enhanced performance and capacitance behavior of anode by rolling Fe3O4 into activated carbon in microbial fuel cells. , 2012, Bioresource technology.

[25]  Zhen He,et al.  Electricity generation from artificial wastewater using an upflow microbial fuel cell. , 2005, Environmental science & technology.

[26]  D. Pant,et al.  Long-term performance of activated carbon air cathodes with different diffusion layer porosities in microbial fuel cells. , 2011, Biosensors & bioelectronics.

[27]  Hongbing Yu,et al.  Catalysis kinetics and porous analysis of rolling activated carbon-PTFE air-cathode in microbial fuel cells. , 2012, Environmental science & technology.

[28]  X Wang,et al.  Electricity production from beer brewery wastewater using single chamber microbial fuel cell. , 2008, Water science and technology : a journal of the International Association on Water Pollution Research.

[29]  P. Liang,et al.  Power generation by packed-bed air-cathode microbial fuel cells. , 2013, Bioresource technology.

[30]  Uwe Schröder,et al.  Application of pyrolysed iron(II) phthalocyanine and CoTMPP based oxygen reduction catalysts as cathode materials in microbial fuel cells , 2005 .

[31]  Deepak Pant,et al.  High strength wastewater treatment accompanied by power generation using air cathode microbial fuel cell , 2013 .

[32]  Eric Chainet,et al.  Carbon-Supported Manganese Oxide Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction (ORR) in Alkaline Medium: Physical Characterizations and ORR Mechanism , 2007 .

[33]  B. Logan,et al.  Microbial fuel cell cathodes with poly(dimethylsiloxane) diffusion layers constructed around stainless steel mesh current collectors. , 2010, Environmental science & technology.