Application of water transport plate to integrated renewable proton exchange membrane fuel cell

A technology of proton exchange membrane and water transfer plate, which is applied in the field of integrated renewable proton exchange membrane fuel cell water transfer plate and its preparation, can solve the problems of limited water flux and limit the performance of electrolytic cells, etc. Fuel cell performance, effect of system simplification

Active Publication Date: 2016-06-01
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the limited water flux of the proton exchange membrane greatly limits the performance of the electrolytic cell under high current density conditions.

Method used

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  • Application of water transport plate to integrated renewable proton exchange membrane fuel cell
  • Application of water transport plate to integrated renewable proton exchange membrane fuel cell
  • Application of water transport plate to integrated renewable proton exchange membrane fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 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 fields are distributed on the surface, and the groove depth of the strip flow fields is 0.5mm. Pass 100...

Embodiment 2

[0026] Example 2: Place nano-carbon powder (100nm) 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 is 3, the treatment temperature is 25°C, and the treatment time is 1h. Mix the hydrophilized carbon powder, conductive graphite powder KS75 (50 μm), conductive carbon fiber (diameter 17 μm, aspect ratio 10) and thermoplastic phenolic resin, and then hot press with a mold, and the proportion of each component is 10%. :70%:8%:12%, the hot pressing temperature is 160°C, the pressure is 2MPa, and the hot pressing time is 20min, the hydrophilic water transfer plate is obtained, the thickness of the plate is 1.3mm, and parallel strip flow is distributed on the surface. Field, the groove depth of the strip flow field is 0.5mm. It was used as the anode current collector, flexible graphite was used as the cathode current collector, and assembled with the m...

Embodiment 3

[0027] 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 2, obtains the hydrophilic acetylene black water transmission plate, and plate thickness is 1.3mm, and surface distribution has parallel strip flow field, and the strip flow field The groove depth is 0.5 mm. It is used as the anode current collector, and the flexible graphite is used as the cathode current collector, and assembled with the memb...

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Abstract

The invention discloses a hydrophilic water transport plate for an integrated renewable proton exchange membrane fuel cell and a preparation method for the water transport plate. The method comprises the steps of firstly hydrophilically treating a carbon nanomaterial; secondly uniformly mixing the hydrophilically treated carbon nanomaterial, a conductive additive, a reinforced carbon fiber and a resin adhesive; and finally performing thermoforming in a mould to obtain the hydrophilic water transport plate, wherein the hydrophilic carbon nanomaterial achieves the effect of promoting water transport. The water transport plate serving as a bipolar plate for the integrated renewable proton exchange membrane fuel cell has good water-penetrating property; and the situations of water shortage and flooding in a working mode of the fuel cell can be effectively relieved, the performance of the fuel cell can be improved, the static water supply can be realized directly by utilizing cooling water in a working mode of an electrolytic tank, the anodic concentration polarization phenomena can be reduced, the electrolytic performance under high electric density can be improved, a system can be simplified, and the energy consumption can be reduced.

Description

technical field [0001] The invention relates to the technical field of an integrated renewable fuel cell, and belongs to a method for preparing a hydrophilic porous bipolar plate of an integrated renewable fuel cell, in particular to an integrated renewable proton exchange membrane fuel cell water transfer plate and a preparation method thereof. Background technique [0002] With its high energy density and low pollution, fuel cells are expected to become the mainstream instead of fossil energy in the future. The integrated regenerative proton exchange membrane fuel cell is an energy storage and power supply system that can realize both the fuel function and the water electrolysis function in the same system. It has high energy density, long service life, no self-discharge, no depth of discharge and The advantages of limited battery capacity are extremely promising energy storage systems that can replace traditional secondary batteries in the fields of space, military and ba...

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 邵志刚郭晓倩王浚英王志强迟军衣宝廉
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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