Microbial fuel cell cathodes with poly(dimethylsiloxane) diffusion layers constructed around stainless steel mesh current collectors

Environmental Science & Technology
Fang ZhangBruce E Logan

Abstract

A new and simplified approach for making cathodes for microbial fuel cells (MFCs) was developed by using metal mesh current collectors and inexpensive polymer/carbon diffusion layers (DLs). Rather than adding a current collector to a cathode material such as carbon cloth, we constructed the cathode around the metal mesh itself, thereby avoiding the need for the carbon cloth or other supporting material. A base layer of poly(dimethylsiloxane) (PDMS) and carbon black was applied to the air-side of a stainless steel mesh, and Pt on carbon black with Nafion binder was applied to the solution-side as catalyst for oxygen reduction. The PDMS prevented water leakage and functioned as a DL by limiting oxygen transfer through the cathode and improving coulombic efficiency. PDMS is hydrophobic, stable, and less expensive than other DL materials, such as PTFE, that are commonly applied to air cathodes. Multiple PDMS/carbon layers were applied in order to optimize the performance of the cathode. Two PDMS/carbon layers achieved the highest maximum power density of 1610 +/- 56 mW/m(2) (normalized to cathode projected surface area; 47.0 +/- 1.6 W/m(3) based on liquid volume). This power output was comparable to the best result of 1635 +/- 62 m...Continue Reading

References

Apr 29, 2004·Environmental Science & Technology·Hong LiuBruce E Logan
Nov 22, 2005·Environmental Science & Technology·Korneel RabaeyWilly Verstraete
Jun 17, 2006·Nature Reviews. Microbiology·Derek R Lovley
Sep 27, 2006·Environmental Science & Technology·Bruce E LoganKorneel Rabaey
Sep 27, 2006·Environmental Science & Technology·Annemiek Ter HeijneCees J N Buisman
Jun 2, 2007·Environmental Science & Technology·Bruce LoganGarett Estadt
Jun 2, 2007·Environmental Science & Technology·Yi ZuoBruce E Logan
Jul 1, 2008·Trends in Biotechnology·René A RozendalCees J N Buisman
Oct 16, 2008·Environmental Science & Technology·Yi ZuoBruce E Logan
Nov 13, 2008·Current Opinion in Biotechnology·Derek R Lovley
Mar 31, 2009·Nature Reviews. Microbiology·Bruce E Logan
Nov 21, 2009·Environmental Science & Technology·Xiaoyuan ZhangBruce E Logan

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Citations

Apr 11, 2012·Environmental Science & Technology·Heming WangZhiyong Ren
Mar 22, 2014·Applied Biochemistry and Biotechnology·Pritha Chatterjee, M M Ghangrekar
Apr 26, 2014·Journal of Hazardous Materials·Lu LuZhiyong Jason Ren
Jun 5, 2013·Bioresource Technology·Xiaoyuan ZhangBruce E Logan
Aug 23, 2011·Bioresource Technology·Jincheng WeiXia Huang
Nov 28, 2014·Bioprocess and Biosystems Engineering·Junxian HouYu Zhou
Jan 24, 2015·Bioresource Technology·Hadi YazdiZhiyong Jason Ren
May 23, 2012·ChemSusChem·Sudeep C PopatCésar I Torres
Jul 28, 2015·ChemSusChem·Jonathan WinfieldIoannis Ieropoulos
Aug 23, 2019·Journal of Environmental Management·A H AnwerM Z Khan
Aug 8, 2020·The Science of the Total Environment·Yi LiXuhui Mao
Jan 16, 2014·Environmental Science & Technology·Xiaoyuan ZhangBruce E Logan

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