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Extracting Renewable Energy from a Salinity Difference Using a Capacitor
Abstract
Completely renewable energy can be produced by using water solutions of different salinity, like river water and sea water. Many different methods are already known, but development is still at prototype stage. Here I report a novel method, based on electric double-layer capacitor technology. Two porous electrodes, immersed in the salt solution, constitute a capacitor. It is first charged, then the salt solution is brought into contact with fresh water. The electrostatic energy increases as the salt concentration of the solution is reduced due to diffusion. This device can be used to turn sources of salinity difference into completely renewable sources of energy. An experimental demonstration is given, and performances and possible improvements are discussed.
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Cited by
Efficient storage mechanisms for building better supercapacitors
Salanne, M., Rotenberg, B., Naoi, K., Kaneko, K., Taberna, P.-L., Grey, C. P., Dunn, B., & Simon, P. (2016) · Nature Energy · doi:10.1038/nenergy.2016.70 · Cited by 2,181
Membrane-based processes for sustainable power generation using water
Logan, B. E., & Elimelech, M. (2012) · Nature · doi:10.1038/nature11477 · Cited by 1,644
Desalination via a New Membrane Capacitive Deionization Process Utilizing Flow-Electrodes
Jeon, S.-I., Park, H.-R., Yeo, J.-G., Yang, S., Cho, C. H., Han, M. H., & Kim, D. K. (2013) · Energy & Environmental Science · doi:10.1039/c3ee24443a · Cited by 727
Solar-driven simultaneous steam production and electricity generation from salinity
Yang, P., Liu, K., Chen, Q., Li, J., Duan, J., Xue, G., Xu, Z., Xie, W., & Zhou, J. (2017) · Energy & Environmental Science · doi:10.1039/c7ee01804e · Cited by 523
Theory of membrane capacitive deionization including the effect of the electrode pore space
Biesheuvel, P. M., Zhao, R., Porada, S., & van der Wal, A. (2011) · Journal of Colloid and Interface Science · doi:10.1016/j.jcis.2011.04.049 · Cited by 490
Metadata
- Authors
- Brogioli, D.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2009-07-29
- Volume
- 103
- Issue
- 5
- Pages
- 058501-058501
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2068855348
- Cited by
- 432
- References
- 0
- FWCI
- 6.79
- Type
- journal article
- Language
- en
- Open access
- closed
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- Brogioli, D. (2009). Extracting Renewable Energy from a Salinity Difference Using a Capacitor. Physical Review Letters. https://doi.org/10.1103/physrevlett.103.058501
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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