Corresponding Author

Sheng-li CHEN(slchen@whu.edu.cn)


Efficient electron transfer between the microbe and the anode is key for the electricity generation in Microbial fuel cell(MFC).Through the modification of anode,the rate of electron transfer can be accelerated,therefore the performance of MFC can be enhanced.In this paper,we report the synthesis of a type of electronconducting and bio-compatible redox hydrogel and its application.The hydrogel consists of poly(4-vinylpyridine) as backbone and neutral red as the redox center.By immobiliazing neutral red on the backbone through covalent bond,the secondary contamination due to the soluble redox mediator to external environment can be prevented.MFCs using the hydrogel-modified carbon anode significantly exhibit shorter acclimation period,and the anode potential is closer to the equilibrium potential of NADH/NAD,which result in higher power density.


microbial fuel cell, anode modification, hydrogel, redox mediator

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[1]Park D H,Zeikus J G.Improved fuel cell and electrodedesigns for producing electricity from microbial degrada-tion[J].Biotechnol Bioeng,2003,81:348-355.
[2]Gil G C,Chang I S,Kim B H,et al.Operational parame-ters affecting the performance of a mediator-lessmicrobi-al fuel cell[J].Biosen Bioelectron,2003,18:327-334.
[3]Logan B E,Regan J M.Feature article:microbial fuel cells-challenges and applications[J].Environ Sci Tech-nol,2006,40(17):5172-5180.
[4]Bond D R,Lovley D R.Electricity production by G e-obacter sulfurreducens attached to electrodes[J].Appl Environ Microbiol,2003,69:1548-1555.
[5]Reguera G,McCarthy K D,Mehta T,et al.Extracellular electron transfer via microbial nanowires[J].Nature,2005,435:1098-1101.
[6]Uwe Schroder.Anodic electron transfer mechanisms in microbial fuel cells and their energy efficiency[J].Phys Chem Chem Phys,2007,9:2619-2629.
[7]Pham T H,Aelterman P,Verstraete W.Bioanode per-formance in bioelectrochemical systems:recent improve-ments and prospects[J].Trends in Biotechnology,2009,27:168-178.
[8]Aoki A,Heller A.Electron diffusion coefficients in hy-drogels formed of cross-linked redox polymers[J].J Phys Chem,1993,97:11014-11019.
[9]Mano N,Mao F,Heller A.On the parameters affecting the characteristics of the″wired″glucose oxidase anode[J].J Electroanal Chem,2005,574:347-357.
[10]Mano N,Soukharev V,Heller A.A laccase-wiring redox hydrogel for efficient catalysis of O2electroreduction[J].J Phys Chem B,2006,110:11180-11187.
[11]Mao F,Mano N,Heller A.Long tethers binding redox centers to polymer backbones enhance electron trans-port in enzyme″Wiring″hydrogels[J].J Am Chem Soc,2003,125:4951-4957.



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