Application of hydrophilic water transport plate in solid polymer electrolyte water electrolysis cell

A technology of solid polymer and water transfer plate, applied in fuel cell components, fuel cell additives, etc., can solve problems affecting battery performance, improve electrolysis performance, facilitate assembly, and reduce energy consumption

Active Publication Date: 2016-06-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But because the oxide is dielectric (dielectric), use of this type of hydrophilic agent or wetting agent will increase the resistance of this separator, thereby affecting the performance of the battery

Method used

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  • Application of hydrophilic water transport plate in solid polymer electrolyte water electrolysis cell
  • Application of hydrophilic water transport plate in solid polymer electrolyte water electrolysis cell
  • Application of hydrophilic water transport plate in solid polymer electrolyte water electrolysis cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Nano-acetylene black (50nm) was placed in a mixed solution of concentrated nitric acid and concentrated sulfuric acid for stirring treatment, wherein the volume ratio of concentrated sulfuric acid / concentrated nitric acid was 5, the treatment temperature was 40°C, and the treatment time was 10h. Hydrophilicized acetylene black, conductive graphite powder KS150 (35 μm), conductive carbon fiber (diameter 11 μm, aspect ratio 10) and thermosetting phenolic resin are mixed evenly and then hot-pressed with a mold, and the proportion of each component is 5%. :75%:10%:10%, the hot pressing temperature is 200°C (the curing temperature of the thermosetting phenolic resin is 190°C), the pressure is 4MPa, and the hot pressing time is 40min, the hydrophilic acetylene black water transmission plate is obtained, and the thickness of the plate is 1.3mm, parallel strip flow field is distributed on one side surface, and the groove depth of the strip flow field is 0.5mm. Pass 1...

Embodiment 2

[0025] Example 2: Nano-acetylene black (150nm) was placed in a mixed solution of concentrated nitric acid and concentrated sulfuric acid for stirring treatment, wherein the volume ratio of concentrated sulfuric acid / concentrated nitric acid was 3, the treatment temperature was 25°C, and the treatment time was 24h. Hydrophilicized acetylene black, conductive graphite powder KS75 (50 μm), conductive carbon fiber (diameter 20 μm, aspect ratio 30) and thermoplastic phenolic resin are mixed evenly and then hot-pressed with a mold, and the proportion of each component is 20%. : 60%: 8%: 12%, hot pressing condition is identical with embodiment 1, obtains the hydrophilic acetylene black water transmission plate, and plate thickness is 1.3mm, and one side surface is distributed with parallel strip flow field, strip flow The groove depth of the field is 0.5mm. It was used as the anode current collector, and the flexible graphite was used as the cathode current collector, and assembled w...

Embodiment 3

[0026] Example 3: Nano-acetylene black (150nm) was placed in a mixed solution of concentrated nitric acid and concentrated sulfuric acid for stirring treatment, wherein the volume ratio of concentrated sulfuric acid / concentrated nitric acid was 3, the treatment temperature was 25°C, and the treatment time was 24h. Hydrophilicized acetylene black, conductive graphite powder KS75 (50 μm), conductive carbon fiber (diameter 20 μm, aspect ratio 30) and thermoplastic phenolic resin are mixed evenly and then hot-pressed with a mold, and the proportion of each component is 20%. : 60%: 8%: 12%, hot pressing condition is identical with embodiment 1, obtains the hydrophilic acetylene black water transmission plate, and plate thickness is 1.3mm, and one side surface is distributed with parallel strip flow field, strip flow The groove depth of the field is 0.5mm. It was used as the cathode current collector, and the flexible graphite was used as the anode current collector, and assembled w...

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Abstract

The present invention discloses a water transport plate used in a solid polymer electrolyte water electrolysis cell and a preparation method thereof, according to the method, first, hydrophilic treatment of a nano-carbon material is performed, the nano-carbon material after the hydrophilic treatment, a conductive additive, enhanced carbon fiber and a resin binder are uniformly mixed and then thermally pressed in a mold for forming to obtain the hydrophilic water transport plate, and the hydrophilic nano-carbon material plays the role of promotion of water transport. The water transport plate can be used as a bipolar plate of the solid polymer electrolyte water electrolysis cell, and has the good water permeability characteristic, static water supply can be achieved by direct use of electrolytic cell cooling water, anode concentration difference polarization can be reduced, high electric density electrolysis performance can be improved, and electrolysis cell system performance can be reduced.

Description

technical field [0001] The invention relates to the technical field of water electrolysis cells, and belongs to a method for preparing a hydrophilic porous bipolar plate of a water electrolysis cell, in particular to a water transfer plate for a solid polymer electrolyte water electrolysis cell and a preparation method thereof. Background technique [0002] Polymer electrolyte (SPE) water electrolysis hydrogen production technology has unique advantages such as high hydrogen production efficiency, high hydrogen production purity, simple operation, convenient maintenance, and no pollution. According to the different water supply methods, SPE water electrolysis cells can be divided into dynamic water supply type and static water supply type. The typical feature of the dynamic water supply type is that the water is dynamically delivered to the anode chamber or the cathode chamber by the pump. The advantage of dynamic water supply at the anode is that the oxidation reaction of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/04
CPCY02E60/50
Inventor 邵志刚王浚英郭晓倩王志强迟军衣宝廉
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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