@misc{10481/33398,
year = {2014},
url = {http://hdl.handle.net/10481/33398},
abstract = {In this work we present a method for the production of
clean, renewable electrical energy from the exchange of
solutions with different salinities. Activated carbon films
are coated with negatively or positively charged polyelectrolytes
by well-established adsorption methods. When
two oppositely charged coated films are placed in contact
with an ionic solution, the potential difference between
them will be equal to the difference between their Donnan
potentials, and hence, energy can be extracted by building
an electrochemical cell with such electrodes. A model is
elaborated on the operation of the cell, based on the electrokinetic
theory of soft particles. All the features of the
model are experimentally reproduced, although a small
quantitative difference concerning the maximum opencircuit
voltage is found, suggesting that the coating is the
key point to improve the efficiency. In the used experimental
conditions, we obtain a power of 12.1 mW/m2. Overall,
the method proves to be a fruitful and simple approach to
salinity-gradient energy production.
Obtaining energy from salinity differences as},
organization = {Departamento de Física Aplicada},
organization = {The research leading to these results received funding from the European Union 7th Framework Programme (FP7/2007-2013) under agreement No. 256868. Further financial sup-
ports from Junta de Andalucía, project PE2012-FQM694, and Ministerio de Economía y Competitividad (Spain), project
FIS2013-47666-C3-1-R.},
publisher = {Royal Society of Chemistry},
keywords = {Blue energy},
keywords = {Salinity exchange},
keywords = {Polyelectrolyte coating},
keywords = {Activated carbon},
keywords = {Donnan potential},
keywords = {Soft particles},
title = {Polyelectrolyte-coated carbons used in the generation of blue energy from salinity differences},
doi = {10.1039/C4CP03527E},
author = {Ahualli Yapur, Silvia Alejandra and Jiménez Olivares, María Luisa and Fernández, M. Mar and Iglesias Salto, Guillermo Ramón and Brogioli, Doriano and Delgado Mora, Ángel Vicente},
}