POLYMER ELECTROLYTE COMPOSITION AND POLYMER ELECTROLYTE MEMBRANE, MEMBRANE-ELECTROLYTE ASSEMBLY, AND SOLID POLYMER FUEL CELL USING SAME
申请人:Toray Industries, Inc.
公开号:EP3131145A1
公开(公告)日:2017-02-15
[Problem]
To provide: a polymer electrolyte composition that has excellent chemical stability that makes it possible to withstand a strong oxidizing atmosphere during fuel cell operation, that makes it possible to achieve excellent protonic conductivity under low humidity conditions, excellent mechanical strength, and excellent physical durability, and that is highly practical; and a polymer electrolyte membrane, a membrane-electrode assembly, and a solid polymer fuel cell that use the polymer electrolyte composition. [Solution] A polymer electrolyte composition that comprises at least an ionic group-containing polymer (A), an organic phosphorus-based additive (C), and a nitrogen-containing heteroaromatic ring system additive (D) and that is characterized by the nitrogen-containing heteroaromatic ring system additive (D) comprising at least three nitrogen-containing heteroaromatic rings within a molecule thereof. In addition, the polymer electrolyte membrane, the catalyst layer-equipped electrolyte membrane, the membrane-electrode assembly, and the solid polymer fuel cell of the present invention are characterized by being configured using the polymer electrolyte composition.
问题
提供一种聚合物电解质组合物,该组合物具有优异的化学稳定性,能够在燃料电池运行期间耐受强氧化性气氛,能够在低湿度条件下实现优异的质子电导率,具有优异的机械强度和优异的物理耐久性,并且具有很高的实用性;以及一种使用该聚合物电解质组合物的聚合物电解质膜、膜电极组件和固体聚合物燃料电池。[解决方案]一种聚合物电解质组合物,它至少包含一种含离子基团的聚合物(A)、一种有机磷基添加剂(C)和一种含氮杂芳香族环系添加剂(D),其特征在于含氮杂芳香族环系添加剂(D)在其分子内至少包含三个含氮杂芳香族环。此外,本发明的聚合物电解质膜、配备催化剂层的电解质膜、膜电极组件和固体聚合物燃料电池的特征在于使用聚合物电解质组合物进行配置。