Polymer electrolyte and use thereof

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 75/23 (2006.01) C08G 65/48 (2006.01) C08J 5/22 (2006.01) C08L 71/10 (2006.01) C08L 81/06 (2006.01) H01B 1/06 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2550915

An aromatic polymer electrolyte that when directly used in a methanol fuel cell, excels in methanol shutoff, etc. There is provided a polymer electrolyte comprising polymer main chains containing oxygen elements and/or sulfur elements and aromatic carbon rings and, directly bonded to some or all of the aromatic carbon rings of the entirety of the polymer electrolyte including side chains, ion exchange groups, wherein the ratio (R) of the number of aromatic condensed polycyclic carbon rings to the total number of aromatic carbon rings of the entirety of the polymer electrolyte including side chains (sum of the number of aromatic monocyclic carbon rings and the number of aromatic condensed polycyclic carbon rings) satisfies the formula: 1>R>=0.15.

L'invention porte sur un électrolyte polymère aromatique qui, lorsqu'il est directement utilisé dans une pile à combustible au méthane, présente une excellente capacité d'arrêt de méthane, etc. Elle concerne un électrolyte polymère contenant des chaînes principales polymériques comprenant des éléments d'oxygène et/ou des éléments de soufre et des anneaux de carbone aromatiques de l'ensemble électrolyte polymère comprenant des chaînes latérales, des groupes d'échange ionique, le rapport (R) du nombre d'anneaux de carbone aromatiques de tout l'électrolyte polymère comprenant des chaînes latérales (somme du nombre d'anneaux de carbone monocyclique aromatique et du nombre d'anneaux de carbone polycyclique condensé) correspondant à la formule : 1>R>0,15.

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