2019-08-20T13:54:53Z
https://digital.csic.es/dspace-oai/request
oai:digital.csic.es:10261/61537
2016-02-17T12:47:54Z
com_10261_56
com_10261_3
col_10261_309
Compañ, Vicente
Fernández-Carretero, F. J.
Riande, Evaristo
2012-11-29T11:46:40Z
2012-11-29T11:46:40Z
2007
Journal of Electrochemical Society 154 (2) : B159-B164 (2007)
0013-4651
http://hdl.handle.net/10261/61537
10.1149/1.2398818
The preparation of cation-exchange membranes by compression molding of sulfonated EPDM-polypropylene blends is described. Concentration potentials measured in a two-compartmental cell with configuration Formula solution Formula membrane∕ Formula solution Formula Formula ., are a linear function of Formula (=Formula , where Formula and Formula are, respectively, the concentration and activity coefficient of the solution in compartment 2 keeping constant the concentration in compartment 1, Formula . The values of the proton transport numbers, Formula , decrease from 0.99 to 0.94 when the ratio Formula increases from 0.1 to 5, nearly the same decrease reported for Nafion 117 in the same variation of concentration ratios. Proton conductivities at Formula are Formula and Formula , respectively, for water-saturated membranes containing 20 and 10% of polypropylene, more than one decade below the value reported in the literature for the conductivity of Nafion membranes at the same temperature. These conductivities at Formula amount to Formula and Formula , respectively
eng
closedAccess
polymer blends
membranes
compression moulding
ion exchange
electrochemistry
ionic conductivity
Electrochemical properties of ion-exchange membranes based on sulfonated EPDM-polypropylene blends
Artículo