Batteries for Efficient Energy Extraction from a Water Salinity Difference

Handle URI:
http://hdl.handle.net/10754/597646
Title:
Batteries for Efficient Energy Extraction from a Water Salinity Difference
Authors:
La Mantia, Fabio; Pasta, Mauro; Deshazer, Heather D.; Logan, Bruce E.; Cui, Yi
Abstract:
The salinity difference between seawater and river water is a renewable source of enormous entropic energy, but extracting it efficiently as a form of useful energy remains a challenge. Here we demonstrate a device called "mixing entropy battery", which can extract and store it as useful electrochemical energy. The battery, containing a Na2-xMn 5O10 nanorod electrode, was shown to extract energy from real seawater and river water and can be applied to a variety of salt waters. We demonstrated energy extraction efficiencies of up to 74%. Considering the flow rate of river water into oceans as the limiting factor, the renewable energy production could potentially reach 2 TW, or ∼13% of the current world energy consumption. The mixing entropy battery is simple to fabricate and could contribute significantly to renewable energy in the future. © 2011 American Chemical Society.
Citation:
La Mantia F, Pasta M, Deshazer HD, Logan BE, Cui Y (2011) Batteries for Efficient Energy Extraction from a Water Salinity Difference. Nano Lett 11: 1810–1813. Available: http://dx.doi.org/10.1021/nl200500s.
Publisher:
American Chemical Society (ACS)
Journal:
Nano Letters
KAUST Grant Number:
KUS-11-001-12; KUS-I1-003-13
Issue Date:
13-Apr-2011
DOI:
10.1021/nl200500s
PubMed ID:
21413685
Type:
Article
ISSN:
1530-6984; 1530-6992
Sponsors:
The work is partially supported by King Abdullah University of Science and Technology (KAUST) under awards KUS-11-001-12 and KUS-I1-003-13 and by the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under contract DE-AC02-76SF0051, through the SLAC National Accelerator Laboratory LDRD project.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorLa Mantia, Fabioen
dc.contributor.authorPasta, Mauroen
dc.contributor.authorDeshazer, Heather D.en
dc.contributor.authorLogan, Bruce E.en
dc.contributor.authorCui, Yien
dc.date.accessioned2016-02-25T12:43:39Zen
dc.date.available2016-02-25T12:43:39Zen
dc.date.issued2011-04-13en
dc.identifier.citationLa Mantia F, Pasta M, Deshazer HD, Logan BE, Cui Y (2011) Batteries for Efficient Energy Extraction from a Water Salinity Difference. Nano Lett 11: 1810–1813. Available: http://dx.doi.org/10.1021/nl200500s.en
dc.identifier.issn1530-6984en
dc.identifier.issn1530-6992en
dc.identifier.pmid21413685en
dc.identifier.doi10.1021/nl200500sen
dc.identifier.urihttp://hdl.handle.net/10754/597646en
dc.description.abstractThe salinity difference between seawater and river water is a renewable source of enormous entropic energy, but extracting it efficiently as a form of useful energy remains a challenge. Here we demonstrate a device called "mixing entropy battery", which can extract and store it as useful electrochemical energy. The battery, containing a Na2-xMn 5O10 nanorod electrode, was shown to extract energy from real seawater and river water and can be applied to a variety of salt waters. We demonstrated energy extraction efficiencies of up to 74%. Considering the flow rate of river water into oceans as the limiting factor, the renewable energy production could potentially reach 2 TW, or ∼13% of the current world energy consumption. The mixing entropy battery is simple to fabricate and could contribute significantly to renewable energy in the future. © 2011 American Chemical Society.en
dc.description.sponsorshipThe work is partially supported by King Abdullah University of Science and Technology (KAUST) under awards KUS-11-001-12 and KUS-I1-003-13 and by the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under contract DE-AC02-76SF0051, through the SLAC National Accelerator Laboratory LDRD project.en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectenergy harvestingen
dc.subjectmixing entropyen
dc.subjectSalinity-gradient poweren
dc.subjectsodium intercalationen
dc.titleBatteries for Efficient Energy Extraction from a Water Salinity Differenceen
dc.typeArticleen
dc.identifier.journalNano Lettersen
dc.contributor.institutionStanford University, Palo Alto, United Statesen
dc.contributor.institutionUniversita degli Studi di Milano, Milan, Italyen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-11-001-12en
kaust.grant.numberKUS-I1-003-13en

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