摘要:
A fluorinated ion exchange polymer is prepared by grafting at least one grafting monomer derived from trifluorostyrene on to at least one base polymer in a organic solvent/water mixture. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.
摘要:
A fluorinated ion exchange polymer prepared by grafting a monomer on to a base polymer, wherein the grafting monomer is selected from the group consisting of structure 1a, structure 1b and mixtures thereof, (INSERT 1a and 1b HERE) wherein Y is selected from the group consisting of —RFSO2F (sulfonyl fluoride), —RFSO3M (fluorosulfonic acid or salt), RFSO2NH2 (fluorosulfonamide), and —RFSO2N(M)SO2R2F (imide); wherein M is H, an alkali cation, or ammonium; and RF and R2F groups are perfluorinated or partially fluorinated, and may optionally include ether oxygens; and n is between 1 and 2 for 1a, or n is between 1 and 3 for 1b. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.
摘要翻译:通过将单体接枝到基础聚合物上制备的氟化离子交换聚合物,其中接枝单体选自结构1a,结构1b及其混合物(INSERT 1a和1b HERE),其中Y选自基团 由-SO 2 SO 2 F(磺酰氟)组成,-RF 3 SO 3 M(氟磺酸 或盐),R 2 SO 2 NH 2(氟磺酰胺)和R 1 F SO 2 2 N(M)SO 2 R 2(酰亚胺); 其中M为H,碱性阳离子或铵; 并且R 1和R 2基团是全氟化的或部分氟化的,并且可任选地包括醚氧; 对于1a,n对于1和2之间,对于1b,n对于1和3之间。 这些离子交换聚合物可用于制备用于燃料电池的催化剂涂覆的膜和膜电极组件。
摘要:
A fluorinated ion exchange polymer is prepared by grafting a monomer onto a base polymer, wherein the grafting monomer is selected from the group consisting of structure 1a, 1b and mixture thereof; wherein Y is selected from the group consisting of —RFSO2F, —RFSO3M, —RSO2NH2 and —RFSO2N(M)SO2R2F, where in M is hydrogen, an alkali cation or ammonium; and RF and R2F are perfluorinated or partially fluorinated, and may optionally include ether oxygens; and n is between 1 and 2 for 1a, or n is between 1 and 3 for 1b. These ion exchange polymers are useful is preparing catalyst coated membranes and membrane electrode assemblies for fuel cells.
摘要:
Crosslinkable polymers and crosslinked fluoropolymers are prepared from selected fluorinated dienes and monomers containing Br and I. Also disclosed are proton conductive membranes of these crosslinked fluoropolymers.
摘要:
Disclosed are ionomers comprising functionalized polyolefins having fluoroalkyl sulfonate pendant groups and ionically conductive compositions formed therefrom by the addition of solvents.
摘要:
A fluorinated ion exchange polymer prepared by grafting at least one grafting monomer on to at least one base polymer, wherein the grafting monomer comprises structure 1a or 1b: wherein Z comprises S, SO2, or POR wherein R comprises a linear or branched perfluoroalkyl group of 1 to 14 carbon atoms optionally containing oxygen or chlorine, an alkyl group of 1 to 8 carbon atoms, an aryl group of 6 to 12 carbon atoms or a substituted aryl group of 6 to 12 carbon atoms; RF comprises a linear or branched perfluoroalkene group of 1 to 20 carbon atoms, optionally containing oxygen or chlorine; Q is chosen from F, —OM, NH2, —N(M)SO2R2F, and C(M)(SO2R2F)2, wherein M comprises H, an alkali cation, or ammonium; R2F groups comprises alkyl of 1 to 14 carbon atoms which may optionally include ether oxygens or aryl of 6 to 12 carbon atoms where the alkyl or aryl groups may be perfluorinated or partially fluorinated; and n is 1 or 2 for 1a, and n is 1, 2, or 3 for 1b. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.
摘要翻译:通过将至少一种接枝单体接枝到至少一种基础聚合物上制备的氟化离子交换聚合物,其中接枝单体包含结构1a或1b:其中Z包含S,SO 2或POR,其中R包含直链或支链全氟烷基 任选含有氧或氯的1至14个碳原子,1至8个碳原子的烷基,6至12个碳原子的芳基或6至12个碳原子的取代的芳基; RF包括任选含有氧或氯的1-20个碳原子的直链或支链全氟烯基; Q选自F,-OM,NH2,-N(M)SO2R2F和C(M)(SO2R2F)2,其中M包括H,碱性阳离子或铵; R 2 F基团包括1至14个碳原子的烷基,其可任选地包括醚氧基或6至12个碳原子的芳基,其中烷基或芳基可全氟化或部分氟化; 对于1a,n为1或2,对于1b,n为1,2或3。 这些离子交换聚合物可用于制备用于燃料电池的催化剂涂覆的膜和膜电极组件。
摘要:
Crosslinkable fluoropolymers and crosslinked fluoropolymers prepared from select fluorinated monomers by dimerization and trimerization. Also disclosed are proton conductive membranes of these crosslinked fluoropolymers.
摘要:
Disclosed are ionomers comprising functionalized polyolefins having fluoroalkyl sulfonate pendant groups and ionically conductive compositions formed therefrom by the addition of solvents.
摘要:
A cathode catalyst layer used for a polymer electrolyte fuel cell that includes an electrolyte membrane is provided. The cathode catalyst layer comprises a catalyst having weight of not greater than 0.3 mg/cm2 of a reaction surface of the cathode catalyst layer that is adjoining the electrolyte membrane; and an electrolyte resin having oxygen permeability of not less than 2.2*10−14 mol/m/s/Pa in an environment of temperature of 80 degrees Celsius and relative humidity of 50%.
摘要翻译:提供了用于包含电解质膜的固体高分子型燃料电池的阴极催化剂层。 阴极催化剂层包含负极与电解质膜相邻的阴极催化剂层的反应面重量不大于0.3mg / cm 2的催化剂; 以及在80℃的温度和50%的相对湿度的环境中具有不低于2.2×10-14mol / m / s / Pa的透氧度的电解质树脂。
摘要:
This invention relates to solid polymer electrolyte materials for use in one or more electrode of a fuel cell. The solid polymer electrolyte materials comprise one or more ionomer which comprises polymerized units of monomers A and monomers B, wherein monomers A are perfluoro dioxole or perfluoro dioxolane monomers, and the monomers B are functionalized perfluoro olefins having fluoroalkyl sulfonyl, fluoroalkyl sulfonate or fluoroalkyl sulfonic acid pendant groups, CF2═CF(O)[CF2]nSO2X. The ionomer of the solid polymer electrolyte material has a number average molecular weight, Mn, of greater than 140,000. Specifically, the ionomers of the invention may find use in the catalyst layer of an electrode because the high molecular weight ionomers mitigate the formation of cracks in the catalyst layer.
摘要翻译:本发明涉及用于燃料电池的一个或多个电极的固体聚合物电解质材料。 固体聚合物电解质材料包含一种或多种离聚物,其包含单体A和单体B的聚合单元,其中单体A是全氟二氧杂环戊烯单体或全氟二氧戊环单体,单体B是具有氟代烷基磺酰基,氟烷基磺酸酯或氟烷基磺酸的全氟烯烃的官能化 侧链基团,CF 2 = CF(O)[CF 2] n SO 2 X。 固体高分子电解质材料的离聚物的数均分子量Mn大于14万。 具体地,本发明的离聚物可用于电极的催化剂层,因为高分子量离聚物可以减轻催化剂层中的裂纹的形成。