Carbon nanotube-coated macroporous sponge for microbial fuel cell electrodes

Handle URI:
http://hdl.handle.net/10754/561972
Title:
Carbon nanotube-coated macroporous sponge for microbial fuel cell electrodes
Authors:
Xie, Xing; Ye, Meng; Hu, Liangbing; Liu, Nian; McDonough, James R.; Chen, Wei; Alshareef, Husam N. ( 0000-0001-5029-2142 ) ; Criddle, Craig S.; Cui, Yi
Abstract:
The materials that are used to make electrodes and their internal structures significantly affect microbial fuel cell (MFC) performance. In this study, we describe a carbon nanotube (CNT)-sponge composite prepared by coating a sponge with CNTs. Compared to the CNT-coated textile electrodes evaluated in prior studies, CNT-sponge electrodes had lower internal resistance, greater stability, more tunable and uniform macroporous structure (pores up to 1 mm in diameter), and improved mechanical properties. The CNT-sponge composite also provided a three-dimensional scaffold that was favorable for microbial colonization and catalytic decoration. Using a batch-fed H-shaped MFC outfitted with CNT-sponge electrodes, an areal power density of 1.24 W m -2 was achieved when treating domestic wastewater. The maximum volumetric power density of a continuously fed plate-shaped MFC was 182 W m -3. To our knowledge, these are the highest values obtained to date for MFCs fed domestic wastewater: 2.5 times the previously reported maximum areal power density and 12 times the previously reported maximum volumetric power density. © 2011 The Royal Society of Chemistry.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Advanced Membranes and Porous Materials Research Center; Functional Nanomaterials and Devices Research Group
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Energy Environ. Sci.
Issue Date:
2012
DOI:
10.1039/c1ee02122b
Type:
Article
ISSN:
17545692
Sponsors:
We thank Karin North and Tracy Ingebrigtsen for experimental assistance. This work was partially supported by the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-11-001-12). JM acknowledges support from the National Defense Science and Engineering and National Science Foundation graduate research fellowships. XX acknowledge the support from the Stanford Graduate Fellowship.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorXie, Xingen
dc.contributor.authorYe, Mengen
dc.contributor.authorHu, Liangbingen
dc.contributor.authorLiu, Nianen
dc.contributor.authorMcDonough, James R.en
dc.contributor.authorChen, Weien
dc.contributor.authorAlshareef, Husam N.en
dc.contributor.authorCriddle, Craig S.en
dc.contributor.authorCui, Yien
dc.date.accessioned2015-08-03T09:35:21Zen
dc.date.available2015-08-03T09:35:21Zen
dc.date.issued2012en
dc.identifier.issn17545692en
dc.identifier.doi10.1039/c1ee02122ben
dc.identifier.urihttp://hdl.handle.net/10754/561972en
dc.description.abstractThe materials that are used to make electrodes and their internal structures significantly affect microbial fuel cell (MFC) performance. In this study, we describe a carbon nanotube (CNT)-sponge composite prepared by coating a sponge with CNTs. Compared to the CNT-coated textile electrodes evaluated in prior studies, CNT-sponge electrodes had lower internal resistance, greater stability, more tunable and uniform macroporous structure (pores up to 1 mm in diameter), and improved mechanical properties. The CNT-sponge composite also provided a three-dimensional scaffold that was favorable for microbial colonization and catalytic decoration. Using a batch-fed H-shaped MFC outfitted with CNT-sponge electrodes, an areal power density of 1.24 W m -2 was achieved when treating domestic wastewater. The maximum volumetric power density of a continuously fed plate-shaped MFC was 182 W m -3. To our knowledge, these are the highest values obtained to date for MFCs fed domestic wastewater: 2.5 times the previously reported maximum areal power density and 12 times the previously reported maximum volumetric power density. © 2011 The Royal Society of Chemistry.en
dc.description.sponsorshipWe thank Karin North and Tracy Ingebrigtsen for experimental assistance. This work was partially supported by the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-11-001-12). JM acknowledges support from the National Defense Science and Engineering and National Science Foundation graduate research fellowships. XX acknowledge the support from the Stanford Graduate Fellowship.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleCarbon nanotube-coated macroporous sponge for microbial fuel cell electrodesen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.identifier.journalEnergy Environ. Sci.en
dc.contributor.institutionDepartment of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, United Statesen
dc.contributor.institutionDepartment of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United Statesen
dc.contributor.institutionDepartment of Chemistry, Stanford University, Stanford, CA 94305, United Statesen
kaust.authorAlshareef, Husam N.en
kaust.authorChen, Weien
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