Fuel cell leveling layer composition and preparation method thereof as well as gas diffusion layer
A fuel cell and leveling layer technology, which is used in fuel cells, fuel cell parts, solid electrolyte fuel cells, etc., can solve the difficulty of inferring and analyzing the pore size and pore distribution of the leveling layer, and is not conducive to the realization of a flat carbon paper surface. effect, not suitable for large-scale production and other problems, to achieve the effect of prolonging power generation efficiency, reducing mass migration, and improving microscopic state
Inactive Publication Date: 2009-09-23
HANERGY TECH
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The invention discloses a fuel cell leveling layer composition and a preparation method thereof as well as a gas diffusion layer. The leveling layer composition comprises a conducting carbon material, an organic pore creating material, a water retention agent, a solvent and a hydrophobing agent, and the mass ratio of the conducting carbon material, the organic pore creating material, the water retention agent and the hydrophobing agent is 1:0.1 to 0.5:0.5 to 10:0.01 to 1. The leveling layer composition can effectively reduce the poriness on the surface of carbon paper, increase the mechanical strength of the gas diffusion layer and reduce the constriction resistance between a leveling layer and a catalyst layer, and the gas diffusion layer containing the leveling layer composition has higher surface smoothness, good ventilation property and water transmissibility, and no fine cracks.
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Property | Measurement | Unit |
Particle size | 20.0 ~ 40.0 | nm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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