期刊
ELECTROCHIMICA ACTA
卷 92, 期 -, 页码 304-314出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.01.063
关键词
Salinity differences; Porous electrodes; Super-capacitors; Electrodiffusion; Renewable energy
资金
- European Union Seventh Framework Programme [256868]
- Regione Lombardia (Accordo per lo sviluppo del capitale umano nel sistema universitario lombardo)
- Cariplo Foundation [2011-0336]
One dimensional theory of the electro-diffusion of ions in activated carbon porous electrodes is applied to describe the dynamic cycle of the capacitive mixing (CAPMIX) based on the double layer expansion (CDLE) technique to harvest renewable energy from salinity gradients. The model combines the electro-diffusion of ions with adsorption and desorption of charge and neutral salt into the double layers at the solid liquid interface, providing a comprehensive and accurate description of the full CAPMIX cycle experimentally measured in prototype cells. A careful analysis of the simulated cycles identifies key parameters for the optimization of the extracted power, like the appropriate thickness and micro-structure of the electrodes, best materials and operation conditions of the electrochemical cell. These directions will be fundamental in the development of this technique as an economically competitive renewable energy source. (C) 2013 Elsevier Ltd. All rights reserved.
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