Long-Term Performance of Chemically and Physically Modified Activated Carbons in Air Cathodes of Microbial Fuel Cells

Handle URI:
http://hdl.handle.net/10754/598735
Title:
Long-Term Performance of Chemically and Physically Modified Activated Carbons in Air Cathodes of Microbial Fuel Cells
Authors:
Zhang, Xiaoyuan; Pant, Deepak; Zhang, Fang; Liu, Jia; He, Weihua; Logan, Bruce E.
Abstract:
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Activated carbon (AC) is a low-cost and effective catalyst for oxygen reduction in air cathodes of microbial fuel cells (MFCs), but its performance must be maintained over time. AC was modified by three methods: 1)pyrolysis with iron ethylenediaminetetraacetic acid (AC-Fe), 2)heat treatment (AC-heat), and 3)mixing with carbon black (AC-CB). The maximum power densities after one month with these AC cathodes were 35% higher with AC-Fe (1410±50mW m-2) and AC-heat (1400±20mW m-2), and 16% higher with AC-CB (1210±30mW m-2) than for plain AC (1040±20mW m-2), versus 1270±50mW m-2 for a Pt control. After 16months, the Pt cathodes produced only 250±10mW m-2. However, the AC-heat and AC-CB cathodes still produced 960-970mW m-2, whereas plain AC produced 860±60mW m-2. The performance of the AC cathodes was restored to >85% of the initial maximum power densities by cleaning with a weak acid solution. Based on cost considerations among the AC materials, AC-CB appears to be the best choice for long-term performance.
Citation:
Zhang X, Pant D, Zhang F, Liu J, He W, et al. (2014) Long-Term Performance of Chemically and Physically Modified Activated Carbons in Air Cathodes of Microbial Fuel Cells. CHEMELECTROCHEM 1: 1859–1866. Available: http://dx.doi.org/10.1002/celc.201402123.
Publisher:
Wiley-Blackwell
Journal:
CHEMELECTROCHEM
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
31-Jul-2014
DOI:
10.1002/celc.201402123
Type:
Article
ISSN:
2196-0216
Sponsors:
The authors thank David Jones for laboratory support. This research was supported by the Strategic Environmental Research and Development Program (SERDP) and Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Xiaoyuanen
dc.contributor.authorPant, Deepaken
dc.contributor.authorZhang, Fangen
dc.contributor.authorLiu, Jiaen
dc.contributor.authorHe, Weihuaen
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-25T13:40:09Zen
dc.date.available2016-02-25T13:40:09Zen
dc.date.issued2014-07-31en
dc.identifier.citationZhang X, Pant D, Zhang F, Liu J, He W, et al. (2014) Long-Term Performance of Chemically and Physically Modified Activated Carbons in Air Cathodes of Microbial Fuel Cells. CHEMELECTROCHEM 1: 1859–1866. Available: http://dx.doi.org/10.1002/celc.201402123.en
dc.identifier.issn2196-0216en
dc.identifier.doi10.1002/celc.201402123en
dc.identifier.urihttp://hdl.handle.net/10754/598735en
dc.description.abstract© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Activated carbon (AC) is a low-cost and effective catalyst for oxygen reduction in air cathodes of microbial fuel cells (MFCs), but its performance must be maintained over time. AC was modified by three methods: 1)pyrolysis with iron ethylenediaminetetraacetic acid (AC-Fe), 2)heat treatment (AC-heat), and 3)mixing with carbon black (AC-CB). The maximum power densities after one month with these AC cathodes were 35% higher with AC-Fe (1410±50mW m-2) and AC-heat (1400±20mW m-2), and 16% higher with AC-CB (1210±30mW m-2) than for plain AC (1040±20mW m-2), versus 1270±50mW m-2 for a Pt control. After 16months, the Pt cathodes produced only 250±10mW m-2. However, the AC-heat and AC-CB cathodes still produced 960-970mW m-2, whereas plain AC produced 860±60mW m-2. The performance of the AC cathodes was restored to >85% of the initial maximum power densities by cleaning with a weak acid solution. Based on cost considerations among the AC materials, AC-CB appears to be the best choice for long-term performance.en
dc.description.sponsorshipThe authors thank David Jones for laboratory support. This research was supported by the Strategic Environmental Research and Development Program (SERDP) and Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).en
dc.publisherWiley-Blackwellen
dc.subjectCarbonen
dc.subjectCatalysisen
dc.subjectLong-term performanceen
dc.subjectMicrobial fuel cellsen
dc.subjectRenewable resourcesen
dc.titleLong-Term Performance of Chemically and Physically Modified Activated Carbons in Air Cathodes of Microbial Fuel Cellsen
dc.typeArticleen
dc.identifier.journalCHEMELECTROCHEMen
dc.contributor.institutionTsinghua University, Beijing, Chinaen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
dc.contributor.institutionFlemish Institute for Technological Research, Mol, Belgiumen
dc.contributor.institutionHarbin Institute of Technology, Harbin, Chinaen
kaust.grant.numberKUS-I1-003-13en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.