Materials selection for optimum energy production by double layer expansion methods

JOURNAL OF POWER SOURCES

卷:261

Article

Iglesias, Guillermo R.¹  Fernandez, Maria M.¹  Ahualli, Silvia¹  Jimenez, Maria L.¹  Kozynchenko, Oleksander P.²  Delgado, Angel V.¹ 

[1] Univ Granada, Sch Sci, Dept Appl Phys, E-18071 Granada, Spain

[2] MAST Carbon Ltd, Guildford GU3 2AF, Surrey, England

关键词: Activated carbon particles;    Capacitive energy extraction;    Double layer expansion;    Pore size distribution;    Supercapacitors;    Wettability;   

DOI  :  10.1016/j.jpowsour.2013.12.125

来源: Elsevier

【 摘 要 】

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 appear essential for optimizing the extracted energy, and have not yet been analyzed with sufficient detail. This investigation will help in evaluating those parameters which 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. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free