2021
DOI: 10.3390/membranes11030198
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Ionic Mobility in Ion-Exchange Membranes

Abstract: Membrane technologies are widely demanded in a number of modern industries. Ion-exchange membranes are one of the most widespread and demanded types of membranes. Their main task is the selective transfer of certain ions and prevention of transfer of other ions or molecules, and the most important characteristics are ionic conductivity and selectivity of transfer processes. Both parameters are determined by ionic and molecular mobility in membranes. To study this mobility, the main techniques used are nuclear … Show more

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Cited by 67 publications
(35 citation statements)
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References 202 publications
(287 reference statements)
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“…In recent years, there has been an increasing interest in the modification of cation-exchange membranes by introducing inorganic oxides into the membrane pores and the channels system. Most of the works in this area are devoted to silica and zirconia [ 1 , 2 , 3 , 4 , 5 , 6 ], while far too little attention has been paid to ceria [ 7 , 8 , 9 ]…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…In recent years, there has been an increasing interest in the modification of cation-exchange membranes by introducing inorganic oxides into the membrane pores and the channels system. Most of the works in this area are devoted to silica and zirconia [ 1 , 2 , 3 , 4 , 5 , 6 ], while far too little attention has been paid to ceria [ 7 , 8 , 9 ]…”
Section: Introductionmentioning
confidence: 99%
“…In recent years, there has been an increasing interest in the modification of cationexchange membranes by introducing inorganic oxides into the membrane pores and the channels system. Most of the works in this area are devoted to silica and zirconia [1][2][3][4][5][6], while far too little attention has been paid to ceria [7][8][9] During operation of low-temperature fuel cells (FCs), hydrogen peroxide and other reactive oxygen species (hydroxyl radicals, superoxide radicals) are generated in a number of side electrochemical reactions. These radicals cause proton-exchange membranes to degrade and decrease FC power [10][11][12][13].…”
Section: Introductionmentioning
confidence: 99%
“…For this goal achievement, Nafion membranes were modified by inorganic dopants. The membrane modification and membrane conductivity properties specify in [ 119 ].…”
Section: Cation-exchange Membranes Structure Hydration Ionic and Molecular Mobilitymentioning
confidence: 99%
“…This leads to the formation of a system of pores and channels in membranes filled with an aqueous solution containing protons formed during the dissociation of functional groups, and their walls contain ions [202,203]. The presence of a bound system of pores containing an acidic solution leads to the presence of extremely high proton conductivity in such membranes [204,205]. The conductivity of membranes is largely determined by the size of the channels and the degree of hydration, which in turn is related to their ion-exchange capacity.…”
Section: Membranes In Fuel Cellsmentioning
confidence: 99%