阅读说明：本技术 质子交换膜燃料电池膜电极的制备方法 (Preparation method of proton exchange membrane fuel cell membrane electrode ) 是由 钟发平 贺凤 倪江鹏 杨涵 邓宇飞 尹涛 于 2019-09-29 设计创作，主要内容包括：本发明提供了一种质子交换膜燃料电池膜电极的制备方法,在质子交换膜的两面分别涂覆上Pt/C催化剂层制得CCM膜半成品,在CCM膜半成品的阳极面的四周边缘均涂覆上抗反极浆料层；抗反极浆料的配制工艺具体为：将抗反极物质加入至去离子水中混合均匀形成混合溶液,将有机溶剂与质子交换膜树脂溶液的混合液加入至混合溶液中混合均匀制得抗反极浆料,抗反极浆料的固含量控制为1％～4％,抗反极物质为铱、铷、锡、钴金属及其金属氧化物中的一种或多种,有机溶剂为乙醇、异丙醇、叔丁醇、正丙醇中的一种或多种。本发明方法工艺简单,可降低燃料电池在运行过程中反极现象的发生概率,减少穿孔现象。(The invention provides a preparation method of a proton exchange membrane fuel cell membrane electrode, which comprises the steps of respectively coating Pt/C catalyst layers on two surfaces of a proton exchange membrane to prepare a CCM membrane semi-finished product, and coating anti-reverse slurry layers on the peripheral edges of an anode surface of the CCM membrane semi-finished product; the preparation process of the anti-reversal slurry comprises the following specific steps: adding an anti-reverse electrode substance into deionized water, uniformly mixing to form a mixed solution, adding a mixed solution of an organic solvent and a proton exchange membrane resin solution into the mixed solution, and uniformly mixing to obtain the anti-reverse electrode slurry, wherein the solid content of the anti-reverse electrode slurry is controlled to be 1% -4%, the anti-reverse electrode substance is one or more of iridium, rubidium, tin, cobalt and metal oxides thereof, and the organic solvent is one or more of ethanol, isopropanol, tert-butanol and n-propanol. The method has simple process, can reduce the occurrence probability of the reverse pole phenomenon of the fuel cell in the operation process, and reduces the perforation phenomenon.)

1. a kind of preparation method of membrane electrode of fuel batter with proton exchange film, it is characterised in that: on the two sides of proton exchange membrane point Pt/C catalyst layer Tu be covered with, CCM film semi-finished product are made, be coated in the edge of the anode surface of the CCM film semi-finished product Upper anti-reflective pole pulp layer；The preparing process of anti-reflective pole slurry specifically: it is equal that mixing is added into deionized water in anti-reflective pole substance Even formation mixed solution, organic solvent is added with the mixed liquor of proton exchange membrane resin solution and is uniformly mixed into mixed solution Be made anti-reflective pole slurry, anti-reflective pole slurry solid content control be 1%~4%, anti-reflective pole substance be iridium, rubidium, tin, One of cobalt metal and its metal oxide are a variety of, and the organic solvent is ethyl alcohol, in isopropanol, the tert-butyl alcohol, normal propyl alcohol It is one or more.

2. the preparation method of membrane electrode of fuel batter with proton exchange film as described in claim 1, it is characterised in that: the anti-reflective In the slurry of pole, the mass ratio of anti-reflective pole substance and proton exchange film resin is 5~3:1, the quality of organic solvent and deionized water Than for 5~1:1~3.

3. the preparation method of membrane electrode of fuel batter with proton exchange film as described in claim 1, it is characterised in that: the anti-reflective The width of pole pulp layer is 2~10mm, and the metal ladings in the pulp layer of the anti-reflective pole are 0.01~0.05mg/cm²。

4. the preparation method of the membrane electrode of fuel batter with proton exchange film as described in claims 1 to 3 is any, it is characterised in that: The Pt carrying capacity control of the cathode plane of the CCM film semi-finished product is 0.2~0.4mg/cm², the anode surface of the CCM film semi-finished product The control of Pt carrying capacity is 0.05~0.15mg/cm²。

Technical field

The present invention relates to fuel cell field, in particular to a kind of preparation side of membrane electrode of fuel batter with proton exchange film Method.

Background technique

Fuel cell inevitably will appear various operation operating conditions, in battery shutdown process in actual moving process In, especially under high current moment stress state, because the reasons such as gas irrational distribution, gas supply lag make each region of membrane electrode There are of short duration work condition abnormality, voltage dip even reverse electrode phenomena easily occurs for catalyst part and surface, especially on membrane electrode side It is multiple solutions contact point at edge, supplies insufficient situation and be easier to occur, easily generation reverse electrode phenomena, influences stable fuel cell Property and the service life, will cause when situation is serious membrane electrode perforation, cause monolith membrane electrode to be scrapped.It is main at present for reverse electrode phenomena Still in terms of concentrating on modeling analysis, also there is the improved method carried out on a small quantity for the phenomenon, mainly conventional Pt/C is catalyzed Agent is modified optimization, plays and accelerates battery response, alleviate the purpose of operating condition response difference, such method increases catalyst Difficulty is prepared, and then increases membrane electrode cost, and fails to generate marginal membrane perforated phenomenon significant improve.

Summary of the invention

The present invention is intended to provide a kind of simple process, the generation that can reduce fuel cell reverse electrode phenomena in the process of running are general Rate, reduce perforated phenomenon membrane electrode of fuel batter with proton exchange film preparation method.

The present invention is realized by the following scheme:

A kind of preparation method of membrane electrode of fuel batter with proton exchange film is respectively coated on the two sides of proton exchange membrane CCM film semi-finished product are made in Pt/C catalyst layer, are coated with upper anti-reflective pole in the edge of the anode surface of the CCM film semi-finished product Pulp layer；The preparing process of anti-reflective pole slurry specifically: anti-reflective pole substance is added into deionized water to be uniformly mixed to be formed and mixes Solution is closed, organic solvent is added with the mixed liquor of proton exchange membrane resin solution and is uniformly mixed obtained anti-reflective into mixed solution Pole slurry, anti-reflective pole slurry solid content control be 1%~4%, anti-reflective pole substance be iridium, rubidium, tin, cobalt metal and One of its metal oxide is a variety of, the organic solvent be one of ethyl alcohol, isopropanol, the tert-butyl alcohol, normal propyl alcohol or It is a variety of.The preparation method of CCM film semi-finished product is carried out by prior art, and the preparation method of the Pt/C catalyst pulp used is also pressed Prior art carries out.Anti-reflective pole substance generally uses nanometer materials.Ultrasonic spray coating method, painting can be used in coating anti-reflective pole pulp layer Cloth method etc., temperature are controlled at 70~85 DEG C.

Further, in the slurry of the anti-reflective pole, the mass ratio of anti-reflective pole substance and proton exchange film resin is 5~3:1, Organic solvent and the mass ratio of deionized water are 5~1:1~3.The mass concentration of proton exchange membrane resin solution is generally 5~ 20%.

Further, the width of anti-reflective pole pulp layer is 2~10mm, the anti-reflective pole object in the pulp layer of the anti-reflective pole Matter carrying capacity is 0.01~0.05mg/cm²。

Further, the Pt carrying capacity control of the cathode plane of the CCM film semi-finished product is 0.2~0.4mg/cm², the CCM The Pt carrying capacity control of the anode surface of film semi-finished product is 0.05~0.15mg/cm²。

The preparation method of membrane electrode of fuel batter with proton exchange film of the invention, simple process, by CCM film semi-finished product That is the anti-reflective pole pulp layer of the anode surface edge coating one fixed width of CCM film made of prior art, so that CCM film edge For double-layer structure, and anti-reflective pole substance used in the slurry of anti-reflective pole is the transition-metals and their oxides with good electric conductivity, With good catalytic activity and corrosion resistance, membrane electrode edge potential difference can be effectively reduced, fuel cell is reduced and is running The probability of happening of reverse electrode phenomena in the process, and then perforated phenomenon is reduced, stability test is improved, extends battery and uses the longevity Life.The preparation method of the membrane electrode of fuel batter with proton exchange film of this method, it is easy to operate, it does not need to common Pt/C catalyst Carry out all modified, the dosage of anti-reflective pole slurry is few, is not required to increase many costs, so that it may be obviously improved fuel cell antipole and Perforated phenomenon.

Specific embodiment

The invention will be further described with reference to embodiments, but the invention is not limited to the statements of embodiment.