Impact of wire geometry in energy extraction from salinity differences using capacitive technology.
Environ Sci Technol
; 46(21): 12203-8, 2012 Nov 06.
Article
en En
| MEDLINE
| ID: mdl-22962998
Energy extraction based on capacitive Donnan potential (CDP) is a recently suggested technique for sustainable power generation. CDP combines the use of ion-exchange membranes and porous carbon electrodes to convert the Gibbs free energy of mixing sea and river water into electric work. The electrodes geometry has a relevant impact on internal resistance and overall performance in CDP. In this work, we present the first effort to use wire-shaped electrodes and its suitability for improving CDP. Analytical evaluation and electrical measurements confirm a strong nonlinear decrease in internal resistance for distances between electrodes smaller than 3 mm. We also demonstrated that we get more power per material invested when compared to traditional flat plate designs. These findings show the advantages of this design for further development of CDP into a mature technology.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fuentes Generadoras de Energía
/
Salinidad
Idioma:
En
Revista:
Environ Sci Technol
Año:
2012
Tipo del documento:
Article
País de afiliación:
Países Bajos
Pais de publicación:
Estados Unidos