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Journal of Colloid and Interface Science
Article . 2013 . Peer-reviewed
License: Elsevier TDM
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Capacitive mixing for the extraction of energy from salinity differences: Survey of experimental results and electrochemical models

Authors: BROGIOLI, DORIANO COSTANTINO; ZIANO, ROBERTO; Rica, R; SALERNO, DOMENICO; MANTEGAZZA, FRANCESCO;

Capacitive mixing for the extraction of energy from salinity differences: Survey of experimental results and electrochemical models

Abstract

The "capacitive mixing" (CAPMIX) technique is an emerging technology aimed at the extraction of energy from salinity differences, e.g. between sea and river waters. CAPMIX benefits from the voltage rise that takes place between two electrodes dipped in a saline solution when its salt concentration is changed. Several kinds of electrodes have been proposed so far: activated carbon materials (Brogioli, 2009), membrane-based ion-selective electrodes (Sales et al., 2010), and battery electrodes (Biesheuvel and van der Wal, 2010). The power production mainly depends on two properties of each single electrode: the amplitude of the potential rise upon salinity change, and the potential in the high-salinity solution. The various electrode materials that have been used returned different values of the two parameters, and hence to different power productions. In this paper, we apply electrokinetic and electrochemical models to qualitatively explain the experimentally observed behaviors of various materials under different experimental conditions. The analysis allows to devise techniques for tailoring new materials, particularly suited for the CAPMIX technique.

Country
Italy
Keywords

FP7, Energy, EC, SP1-Cooperation, Capacitive mixing; Electric double layer; Energy from salinity difference; Gouy-Chapman-Stern model; Surfaces, Coatings and Films; Electronic, Optical and Magnetic Materials; Biomaterials; Colloid and Surface Chemistry, European Commission

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
73
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