Batteries for Efficient Energy Extraction from a Water Salinity Difference
KAUST Grant NumberKUS-11-001-12
Permanent link to this recordhttp://hdl.handle.net/10754/597646
MetadataShow full item record
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.
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.
SponsorsThe 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.
PublisherAmerican Chemical Society (ACS)
CollectionsPublications Acknowledging KAUST Support
- A desalination battery.
- Authors: Pasta M, Wessells CD, Cui Y, La Mantia F
- Issue date: 2012 Feb 8
- Direct power production from a water salinity difference in a membrane-modified supercapacitor flow cell.
- Authors: Sales BB, Saakes M, Post JW, Buisman CJ, Biesheuvel PM, Hamelers HV
- Issue date: 2010 Jul 15
- Extraction of Salinity-Gradient Energy by a Hybrid Capacitive-Mixing System.
- Authors: Lee J, Yoon H, Lee J, Kim T, Yoon J
- Issue date: 2017 Apr 10
- Harvesting waste thermal energy using a carbon-nanotube-based thermo-electrochemical cell.
- Authors: Hu R, Cola BA, Haram N, Barisci JN, Lee S, Stoughton S, Wallace G, Too C, Thomas M, Gestos A, Cruz ME, Ferraris JP, Zakhidov AA, Baughman RH
- Issue date: 2010 Mar 10
- Evaluating Battery-like Reactions to Harvest Energy from Salinity Differences using Ammonium Bicarbonate Salt Solutions.
- Authors: Kim T, Rahimi M, Logan BE, Gorski CA
- Issue date: 2016 May 10