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dc.contributor.authorWei, Bin
dc.contributor.authorTokash, Justin C.
dc.contributor.authorZhang, Fang
dc.contributor.authorKim, Younggy
dc.contributor.authorLogan, Bruce E.
dc.date.accessioned2016-02-25T13:13:16Z
dc.date.available2016-02-25T13:13:16Z
dc.date.issued2013-02
dc.identifier.citationWei B, Tokash JC, Zhang F, Kim Y, Logan BE (2013) Electrochemical analysis of separators used in single-chamber, air-cathode microbial fuel cells. Electrochimica Acta 89: 45–51. Available: http://dx.doi.org/10.1016/j.electacta.2012.11.004.
dc.identifier.issn0013-4686
dc.identifier.doi10.1016/j.electacta.2012.11.004
dc.identifier.urihttp://hdl.handle.net/10754/598132
dc.description.abstractPolarization, solution-separator, charge transfer, and diffusion resistances of clean and used separator electrode assemblies were examined in microbial fuel cells using current-voltage curves and electrochemical impedance spectroscopy (EIS). Current-voltage curves showed the total resistance was reduced at low cathode potentials. EIS results revealed that at a set cathode potential of 0.3 V diffusion resistance was predominant, and it substantially increased when adding separators. However, at a lower cathode potential of 0.1 V all resistances showed only slight differences with and without separators. Used separator electrode assemblies with biofilms had increased charge transfer and diffusion resistances (0.1 V) when one separator was used; however, charge transfer resistance increased, and diffusion resistance did not appreciably change with four separators. Adding a plastic mesh to compress the separators improved maximum power densities. These results show the importance of pressing separators against the cathode, and the adverse impacts of biofilm formation on electrochemical performance. © 2012 Elsevier Ltd. All Rights Reserved.
dc.description.sponsorshipThis research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).
dc.publisherElsevier BV
dc.subjectElectrochemical impedance spectroscopy
dc.subjectElectrochemical resistances
dc.subjectMicrobial fuel cell
dc.subjectSeparator electrode assembly
dc.titleElectrochemical analysis of separators used in single-chamber, air-cathode microbial fuel cells
dc.typeArticle
dc.identifier.journalElectrochimica Acta
dc.contributor.institutionPennsylvania State University, State College, United States
kaust.grant.numberKUS-I1-003-13


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