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A fuel cell proton exchange membrane based on concave-convex composite microstructure

A technology of proton exchange membranes and composite microstructures, applied in the field of proton exchange membranes for fuel cells based on concave-convex composite microstructures, can solve the problems of complex operation process, time-consuming, unfavorable large-scale commercial production, etc. Performance, the effect of improving the efficiency of electrocatalytic reaction

Active Publication Date: 2021-06-22
无锡隆盛新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method is effective, its operation process is 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 based on concave-convex composite microstructure
  • A fuel cell proton exchange membrane based on concave-convex composite microstructure
  • A fuel cell proton exchange membrane based on concave-convex composite microstructure

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Embodiment 1

[0035] Such as figure 1 , figure 2 , Figure 6 and Figure 7 As shown, the fuel cell proton exchange membrane based on concave-convex composite microstructure described in the present invention is a perfluorosulfonic acid type proton exchange membrane with a length of 60 mm, a width of 60 mm, and a thickness of 50 μm. The cathode surface 1 of the proton exchange membrane of the fuel cell is distributed with a plurality of concave-convex composite textures 2 according to a gradient of inner density and outer sparseness, and the concave-convex composite texture 2 includes first protrusions 3, second micro protrusions 5 and micro pits 4, Described first protrusion 3 is provided with a circle of second micro-protrusion 5 around, and the cross-sectional area of ​​described first protrusion 3 is greater than the cross-sectional area of ​​the second micro-protrusion 5; Described first protrusion 3 and Micro pits 4 are arranged between the second micro protrusions 5 , and the wall...

Embodiment 2

[0039] Such as image 3 , Figure 4 , Figure 6 and Figure 7 As shown, the fuel cell proton exchange membrane based on concave-convex composite microstructure described in the present invention is a perfluorosulfonic acid type proton exchange membrane with a length of 60 mm, a width of 60 mm, and a thickness of 50 μm. The cathode surface 1 of the proton exchange membrane of the fuel cell is distributed with a plurality of concave-convex composite textures 2 according to a gradient of inner density and outer sparseness, and the concave-convex composite texture 2 includes first protrusions 3, second micro protrusions 5 and micro pits 4, Described first protrusion 3 is provided with a circle of second micro-protrusion 5 around, and the cross-sectional area of ​​described first protrusion 3 is greater than the cross-sectional area of ​​the second micro-protrusion 5; Described first protrusion 3 and Micro pits 4 are arranged between the second micro protrusions 5 , and the wall...

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Abstract

The invention provides a fuel cell proton exchange membrane based on a concave-convex composite microstructure. The cathode surface of the fuel cell proton exchange membrane is distributed with a plurality of concave-convex composite textures according to a gradient of inner density and outer sparseness. The concave-convex composite texture includes first protrusions, second micro-protrusions and micro-dimples, a circle of second micro-protrusions is arranged around the first protrusions, and the cross-sectional area of ​​the first protrusions is larger than The cross-sectional area of ​​the second micro-protrusion; a micro-pit is provided between the first protrusion and the second micro-protrusion, and the wall surface of the micro-pit is respectively the same as the wall surface of the first protrusion and the second micro-pit Raised walls are tangent. The invention forms a patterned membrane with concave-convex composite texture by performing micro-texture treatment on the cathode surface of the proton exchange membrane, which can also greatly increase the specific surface area of ​​the membrane, improve reaction efficiency, and improve battery performance.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a fuel cell proton exchange membrane based on a concave-convex composite microstructure. Background technique [0002] Hydrogen fuel cell vehicles have the typical characteristics of zero emissions, long driving range, and fast refueling, and are generally considered by the industry to be the ultimate development direction of new energy vehicles. The development of hydrogen fuel cell vehicles is of great significance to improving the energy structure and developing low-carbon transportation. During the use of the fuel cell, in order to obtain higher power, a battery stack is usually formed by connecting many single cells in series. Therefore, the performance of the single cell directly determines the performance of the entire fuel cell. Proton exchange membrane fuel cell is composed of proton exchange membrane, catalyst layer, gas diffusion layer and bipolar plate, and the performance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1065H01M8/1067
CPCH01M8/1065H01M8/1067H01M2008/1095Y02E60/50
Inventor 解玄尹必峰许晟陈鑫贾和坤唐捷旭陈明山董非
Owner 无锡隆盛新能源科技有限公司
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