摘要:
Fuel cell systems, e.g. systems including proton exchange membrane (PEM) fuel cells, are engineered to have more than one internal electrical resistance that can change according to temperature. Such changes in internal electrical resistance levels allow rapid heat-up of the fuel cells from low temperatures to an elevated temperature that is optimal for water management and fuel cell operation. The fuel cell systems can include at least one fuel cell and at least one resistor-switch unit electrically connected to the at least one fuel cell. The at least one resistor-switch unit includes a resistor and a switch in which the switch is electrically connected in parallel with the resistor.
摘要:
The invention relates to a fuel cell (1), comprising at least the following components: a proton-conducting polymer membrane (2) as the electrolyte; catalyst layers (3) covering the polymer membrane (2) on both sides; gas-permeable electrodes in the form of an anode (4) and a cathode (5), which lie adjacent to the surface of the catalyst layers (3) that faces outwards; electroconductive plates (6), which come into electroconductive contact with the electrodes in at short distances and which together with the electrodes, delimit channels carrying gas; and gas connections for supplying hydrogen (H2) and for supplying oxygen (O2). The inventive fuel cell (1) is characterised in that the polymer membrane (2) is a mixture based on a polymer blend containing at least one first polymer group A which is based on a halogenated and/or sulphonated polyalkene, and one second polymer group B which is based on a vulcanised rubber with a polar character.
摘要:
The invention concerns an organic ionic conductive membrane for fuel cell and the method for making such a membrane. Said membrane comprises two surface layers (1, 3) made of proton conductive polymer, wherebetween is provided a porous layer (5) of proton conductive polymer, the pores of said porous layer containing a proton conductive material (7). The proton conductive polymers of the two surface layers and of the porous layer can be identical or different sulphonated polyimides.
摘要:
본 발명은 고분자 골격 내 아릴 에테르 결합이 없으면서 반복단위 내 지방족 사슬을 함유하고 피페리디늄 그룹이 도입된 폴리(알킬-아릴 피페리디늄) 중합체를 합성하며, 이로부터 음이온교환막 및 그 복합막을 제조하는 것에 관한 것이다. 본 발명에 따른 음이온교환막 및 그 복합막은 알칼리 안정성 및 기계적 물성이 우수하고 이온전도도가 매우 높다. 또한, 전극 촉매의 페닐 흡착효과를 감소시키고, 수투과도 및 전력밀도가 높으며 내구성도 뛰어나므로 알칼리 연료전지용 막 및 바인더 또는 수전해에 응용이 가능하다.
摘要:
The invention relates to a novel proton-conducting polymer membrane based on polyazols. Said polymer membrane can be used in a variety of ways due to its outstanding chemical and thermal properties and is especially suitable as a polymer electrolyte membrane (PEM) for producing membrane electrode units for so-called PEM fuel cells.
摘要:
The invention relates to a fuel cell (1), comprising at least the following components: a proton-conducting polymer membrane (2) as the electrolyte; catalyst layers (3) covering the polymer membrane (2) on both sides; gas-permeable electrodes in the form of an anode (4) and a cathode (5), which lie adjacent to the surface of the catalyst layers (3) that faces outwards; electroconductive plates (6), which come into electroconductive contact with the electrodes in at short distances and which together with the electrodes, delimit channels carrying gas; and gas connections for supplying hydrogen (H2) and for supplying oxygen (O2). The inventive fuel cell (1) is characterised in that the polymer membrane (2) is a mixture based on a polymer blend containing at least one first polymer group A which is based on a halogenated and/or sulphonated polyalkene, and one second polymer group B which is based on a vulcanised rubber with a polar character.
摘要:
The invention relates to novel organic/inorganic hybrid membranes which have the following composition: a polymer acid containing -SO3H-, -PO3H2-, -COOH- or B(OH)2 groups; a polymer base (optional), which contains primary, secondary or tertiary amino groups, pyridine groups, imidazole, benzimidazole, triazole, benzotriazole-pyrazole or benzpyrazole groups, either in the side chain or the main chain; an additional polymer base (optional) containing the aforementioned base groups; an elemental oxide, or metal oxide or metal hydroxide, which has been obtained by the hydrolysis and/or sol-gel reaction of one elemental organic and/or organometallic compound during the membrane forming process and/or by a re-treatment of the membrane in aqueous acidic, alkaline or neutral electrolytes. The invention also relates to methods for producing said membranes and to the various uses for membranes of this type.