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dc.contributor.authorLiu, Jia
dc.contributor.authorGeise, Geoffrey M.
dc.contributor.authorLuo, Xi
dc.contributor.authorHou, Huijie
dc.contributor.authorZhang, Fang
dc.contributor.authorFeng, Yujie
dc.contributor.authorHickner, Michael A.
dc.contributor.authorLogan, Bruce E.
dc.date.accessioned2016-02-25T13:53:48Z
dc.date.available2016-02-25T13:53:48Z
dc.date.issued2014-12
dc.identifier.citationLiu J, Geise GM, Luo X, Hou H, Zhang F, et al. (2014) Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis cells. Journal of Power Sources 271: 437–443. Available: http://dx.doi.org/10.1016/j.jpowsour.2014.08.026.
dc.identifier.issn0378-7753
dc.identifier.doi10.1016/j.jpowsour.2014.08.026
dc.identifier.urihttp://hdl.handle.net/10754/599150
dc.description.abstractPower production in microbial reverse-electrodialysis cells (MRCs) can be limited by the internal resistance of the reverse electrodialysis stack. Typical MRC stacks use non-conductive spacers that block ion transport by the so-called spacer shadow effect. These spacers can be relatively thick compared to the membrane, and thus they increase internal stack resistance due to high solution (ohmic) resistance associated with a thick spacer. New types of patterned anion and cation exchange membranes were developed by casting membranes to create hemispherical protrusions on the membranes, enabling fluid flow between the membranes without the need for a non-conductive spacer. The use of the patterned membrane decreased the MRC stack resistance by ∼22 Ω, resulting in a 38% increase in power density from 2.50 ± 0.04 W m-2 (non-patterned membrane with a non-conductive spacer) to 3.44 ± 0.02 W m-2 (patterned membrane). The COD removal rate, coulombic efficiency, and energy efficiency of the MRC also increased using the patterned membranes compared to the non-patterned membranes. These results demonstrate that these patterned ion exchange membranes can be used to improve performance of an MRC. © 2014 Elsevier B.V. All rights reserved.
dc.description.sponsorshipWe thank Weihua He for help with the analytical measurements. This work was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST), the State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (Grant No. 2013DX08), the National Natural Science Foundation of China for Distinguished Young Scholars (51125033), National Funds for Creative Research Group of China (Grant No. 51121062) and Science and Technology Cooperation Project Between the Government of Canada and China (2011DFG96630).
dc.publisherElsevier BV
dc.subjectIntegrated spacer
dc.subjectInternal resistance
dc.subjectMicrobial reverse electrodialysis cell
dc.subjectPatterned membranes
dc.titlePatterned ion exchange membranes for improved power production in microbial reverse-electrodialysis cells
dc.typeArticle
dc.identifier.journalJournal of Power Sources
dc.contributor.institutionPennsylvania State University, State College, United States
dc.contributor.institutionUniversity of Virginia, Charlottesville, United States
dc.contributor.institutionTsinghua University, Beijing, China
dc.contributor.institutionHarbin Institute of Technology, Harbin, China
kaust.grant.numberKUS-I1-003-13


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