Fuel cell proton exchange membrane with micro texture and processing method of fuel cell proton exchange membrane

A proton exchange membrane and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of unfavorable large-scale commercial production, long time-consuming, complicated operation, etc.

Active Publication Date: 2020-10-30
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above patents help to increase the three-phase reaction interface and improve the utilization rate of the catalyst

Method used

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  • Fuel cell proton exchange membrane with micro texture and processing method of fuel cell proton exchange membrane
  • Fuel cell proton exchange membrane with micro texture and processing method of fuel cell proton exchange membrane
  • Fuel cell proton exchange membrane with micro texture and processing method of fuel cell proton exchange membrane

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Embodiment 1

[0045] Such as figure 1 , 2 As shown in , 3, the fuel cell proton exchange membrane with microtexture according to the present invention, the proton exchange membrane 1 is a perfluorosulfonic acid type proton exchange membrane with a length of 50 mm, a width of 50 mm and a thickness of 50 μm. The cathode surface 2 of the proton exchange membrane is distributed with a number of petal-shaped concave-convex composite textures 3 according to the gradient of inner density and outer sparseness. The concave-convex composite texture 3 includes pits 4 and protrusions 5. A ring protrusion 5, and a number of semi-ellipsoidal micro-pits 6 are evenly distributed on the inner surface of the pit 4. The pit 4 can be a hemispherical pit, and the pit 4 can also be a circular hole, the bottom of which is a hemispherical surface tangent to the cylindrical surface of the circular hole. The protrusion 5 may be a hemispherical protrusion, or the protrusion 5 may be a cylinder, and the top of the c...

Embodiment 2

[0049] Such as Figure 4 , 5 As shown in 6 and 6, the proton exchange membrane of the fuel cell with microtexture according to the present invention, the proton exchange membrane 1 is a perfluorosulfonic acid type proton exchange membrane with a length of 50 mm, a width of 50 mm and a thickness of 50 μm. The cathode surface 2 of the proton exchange membrane is distributed with a number of petal-shaped concave-convex composite textures 3 according to the gradient of inner density and outer sparseness. The concave-convex composite texture 3 includes pits 4 and protrusions 5. A ring protrusion 5, and a number of semi-ellipsoidal micro-pits 6 are evenly distributed on the inner surface of the pit 4. The pit 4 can be a hemispherical pit, and the pit 4 can also be a circular hole, the bottom of which is a hemispherical surface tangent to the cylindrical surface of the circular hole. Several concave-convex composite textures 3 are rectangularly distributed on the cathode surface 2;...

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Abstract

The invention provides a fuel cell proton exchange membrane with a micro texture and a processing method of the fuel cell proton exchange membrane. A plurality of petal-shaped concave-convex compositetextures are distributed on the surface of a cathode of the fuel cell proton exchange membrane in a gradient manner that the inside is dense and the outside is sparse. The concave-convex composite texture comprises pits and protrusions, a circle of protrusions are arranged on the edges of the pits, and a plurality of semi-ellipsoid micro pits are evenly distributed in the inner surfaces of the pits. The surface of the cathode is divided into a central area, a middle area and a peripheral area according to the distance between every two adjacent concave-convex composite textures, and in each area, the distance between every two adjacent concave-convex composite textures is gradually increased from inside to outside in a gradient mode. The concave-convex composite texture can effectively increase the surface area of the cathode surface of the proton exchange membrane, facilitates full contact between the catalyst and reaction gas, and improves the reaction efficiency; and the carbon-supported platinum catalyst can be stably embedded in the structure, and the active area of the catalyst is increased, so that the utilization rate of the catalyst is increased.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a fuel cell proton exchange membrane with a micro-texture and a processing method thereof. Background technique [0002] As the problem of environmental pollution becomes more and more serious, fuel cells have attracted attention at home and abroad because of their high conversion efficiency and non-pollution characteristics. Proton exchange membrane fuel cell (PEMFC) is a widely used type of fuel cell. PEMFC is considered to be a fuel cell due to its advantages of high energy conversion efficiency, high operational reliability, no pollution to the environment, few moving parts, and no noise. It is the most promising green energy conversion device to replace traditional fossil energy. [0003] The membrane electrode is the core structural component of the proton exchange membrane fuel cell. The proton exchange membrane is one of the core components of the membrane electrode. At the sa...

Claims

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Application Information

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IPC IPC(8): H01M8/1065H01M8/1067H01M8/1069
CPCH01M8/1065H01M8/1067H01M8/1076H01M2008/1095Y02E60/50
Inventor 陈鑫尹必峰解玄许晟贾和坤唐捷旭陈明山董非
Owner JIANGSU UNIV
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