A fuel cell proton exchange membrane with micro-texture and its processing method

A proton exchange membrane, fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of complex operation, unfavorable large-scale commercial production, long time consumption, etc., achieve simple processing, improve management problems, The effect of mass reduction

Active Publication Date: 2021-08-03
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, but the operation is too complicated and time-consuming, which is not conducive to large-scale commercial production

Method used

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  • A fuel cell proton exchange membrane with micro-texture and its processing method
  • A fuel cell proton exchange membrane with micro-texture and its processing method
  • A fuel cell proton exchange membrane with micro-texture and its processing method

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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 micro-texture and a processing method thereof. The cathode surface of the fuel cell proton exchange membrane distributes several petal-shaped concave-convex composite textures according to a gradient of inner density and outer sparseness. The concave-convex composite texture includes pits and protrusions, a circle of protrusions is arranged at the edge of the pits, and several semi-ellipsoidal micro-pits are evenly distributed on the inner surface of the pits. The cathode surface is divided into a central area, a middle area and a peripheral area according to the spacing of adjacent concave-convex composite textures, and in each area, the spacing of any adjacent concave-convex composite texture is gradually increased from the inside to the outside. The concave-convex composite texture of the invention can effectively increase the surface area of ​​the cathode surface of the proton exchange membrane, help the catalyst to fully contact the reaction gas, and improve the reaction efficiency; it can also make the carbon-supported platinum catalyst stably embedded in the structure, and improve the catalyst performance. Active area, thereby improving catalyst utilization.

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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Patent Type & Authority Patents(China)
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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