| 发明名称 | Oxidation-stabilised polymer electrolyte membrane for fuel cells | ||
| 摘要 | Polymer electrolyte membrane (PEM) made from perfluorosulfonic acid polymers, displaying proton conductivity at least in the presence of water, adequate for operation in a fuel cell, comprising at least one oxidation protection agent and additives. The PEM is an acid/base polymer blend which forms acidic and basic domains, the basic polymer being formed by polybenzimidazole (PBI) and the at least one oxidation protection agent being formed by manganese oxide. | ||
| 申请公布号 | US8802317(B2) | 申请公布日期 | 2014.08.12 |
| 申请号 | US200712438736 | 申请日期 | 2007.08.21 |
| 申请人 | Daimler AG | 发明人 | Finsterwalder Florian;Soczka-Guth Thomas;Schaloske Manuel Christian |
| 分类号 | H01M8/10 | 主分类号 | H01M8/10 |
| 代理机构 | Patent Central LLC | 代理人 | Patent Central LLC ;Pendorf Stephan A. |
| 主权项 | 1. A polymer electrolyte membrane (PEM) which exhibits a proton conductivity at least in the presence of water, the proton conductivity being sufficient for the operation in a fuel cell, comprising: at least one oxidation protection agent, additives, and a blend of an acid polymer and a base polymer which blend forms acidic and basic domains, wherein the basic polymer is polybenzimidazole (PBI), the acid polymer is perfluorosulfonic acid polymer and the at least one oxidation protection agent is manganese oxide, wherein the perfluorosulfonic acid polymer forms a proton conductive matrix phase, wherein manganese oxide is embedded in the basic domains formed by the polybenzimidazole,wherein the membrane contains water in an amount of 1-10 mol water per mol sulfonic acid groups, and wherein polybenzimidazole (PBI) comprises 0.5 to 8 weight % of the PEM. | ||
| 地址 | Stuttgart DE | ||