An ink for producing membrane electrode units for PEM fuel cells

• Main Authors: ZUBER RALF, KRAMER ANITA, WITTPAHL SANDRA, STARZ KARL-ANTON, FEHL KNUT, KOHLER JOACHIM
• Format: Patent
• Language: English; Korean
• Published: 04.02.2002
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PURPOSE: Provided is a water-based catalyst ink which contains no toxic and/or readily inflammable solvents and which in addition overcomes the disadvantages of the existing water-based ink such as poor adhesion, poor electrical performance, and short screen life. CONSTITUTION: The ink for producing a membrane electrode assembly for a fuel cell comprises a catalyst, an ionomer, water and an organic solvent, wherein said organic solvent is at least one linear dialcohol with a flash point higher than 100 deg.C and is present in the ink in a concentration between 1 and 50 wt.% with respect to the weight of water. The linear alcohol is a dihydric alcohol wherein hydroxyl groups are not adjacent to each other. The alcohol has a chain structure that is aliphate-CH2 groups, optionally with oxygen atoms between said CH2 groups. 본 발명은 촉매 물질, 이오노머, 물 및 유기 용매를 함유하는 PEM 연료 전지를 위한 막 전극 유니트 제조용 잉크를 제공한다. 당해 잉크는 유기 용매가 인화점이 100℃ 이상인 직쇄 디알콜 그룹으로부터의 하나 이상의 화합물이고 물의 중량을 기준으로 하여 1 내지 50중량%의 농도로 잉크 중에 존재함을 특징으로 한다.