Materials selection for optimum energy production by double layer expansion methods Iglesias Salto, Guillermo Ramón Fernández, M. Mar Ahualli Yapur, Silvia Alejandra Jiménez Olivares, María Luisa Kozynchenko, Oleksander P. Delgado Mora, Ángel Vicente Activated carbon particles Capacitive energy extraction Double layer expansion Pore size distribution Supercapacitors Wettability NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Power Sources. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Power Sources (2014) DOI:http://dx.doi.org/10.1016/j.jpowsour.2013.12.125 The capacitive mixing procedure for energy extraction based on Double Layer Expansion (CDLE) belongs to the group of so-called CAPMIX techniques, which aim at obtaining energy from the salinity difference between fresh and sea waters. Specifically, the CDLE technique takes advantage of the voltage rise that occurs when sea water is exchanged for river water in a pair of porous electrodes which jointly behave as an electrical double layer supercapacitor. In this article, we deal with some experimental aspects that are key for optimizing the extracted energy, and have not been analyzed yet with sufficient detail. This investigation will help in evaluating those parameters which we need to be fixed in a future CDLE device. These include the charging potential, the durations of the different cycle steps, the load resistance used, and the porosity and hydrophilicity of the carbon. 2014-05-01T15:59:31Z 2014-05-01T15:59:31Z 2014-01-08 info:eu-repo/semantics/article Iglesias, G.R; et al. Materials selection for optimum energy production by double layer expansion methods. Journal of Power Sources, (2014). [http://hdl.handle.net/10481/31503] 0378-7753 http://hdl.handle.net/10481/31503 10.1016/j.jpowsour.2013.12.125 eng info:eu-repo/grantAgreement/EC/FP7/256868 info:eu-repo/semantics/openAccess