Novel single-layer gas diffusion layer for fuel cell and preparation method and application of novel single-layer gas diffusion layer
一种气体扩散层、燃料电池的技术,应用在电气元件、电池电极、电路等方向,能够解决阻碍质子交换膜燃料电池商业化、不符合健康绿色发展理念、气体扩散层成本高等问题,达到制备方法健康绿色、减小质子传导电阻、易于工业化生产的效果
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Embodiment 1
[0035] Weigh 1.0g of carbon fiber, 0.075g of hydrophobic binder PVDF, pore forming agent K 2 CO 3 2.0g, mechanically mixed by a pulverizer for 30 minutes, after being fully ground and mixed, spread the evenly mixed mixture in a self-made stainless steel mold to ensure a smooth surface. Then place the mold in a hot press, and first apply a pressure of 0.5 MPa at room temperature for 30 minutes to make the mixture into a sheet. Then release the pressure and heat to raise the temperature to 150°C, heat treatment at 150°C for 20 minutes to make the PVDF evenly distributed in the carbon-free, self-supporting microporous layer. Turn off the heating to allow the mold to cool naturally to room temperature, take out the obtained sheet sample from the mold, and then soak it in HCl solution for 2 hours to remove the pore-forming agent in the microporous layer and form pores inside the microporous layer, wherein the HCl solution The concentration is 2mol L -1 . After acid immersion, ...
Embodiment 2
[0037] Weigh carbon fiber 1.0g, hydrophobic binder PVDF 0.1111g, pore forming agent K 2 CO 3 2.0g, mechanically mixed by a pulverizer for 30 minutes, after being fully ground and mixed, spread the evenly mixed mixture in a self-made stainless steel mold to ensure a smooth surface. Then place the mold in a hot press, and first apply a pressure of 0.5 MPa at room temperature for 30 minutes to make the mixture into a sheet. Then the pressure is released and heated to raise the temperature to 150° C., and heat treatment at 150° C. for 60 minutes to make the PVDF evenly distributed in the carbon-free, self-supporting microporous layer. Turn off the heating to allow the mold to cool naturally to room temperature, take out the obtained sheet sample from the mold, and then soak it in HCl solution for 2 hours to remove the pore-forming agent in the microporous layer and form pores inside the microporous layer, wherein the HCl solution The concentration is 2mol L -1. After acid imm...
Embodiment 3
[0039] Weigh 1.0g of carbon fiber, 0.2g of hydrophobic binder PVDF, pore forming agent K 2 CO 3 2.0g, mechanically mixed by a pulverizer for 30 minutes, after being fully ground and mixed, spread the evenly mixed mixture in a self-made stainless steel mold to ensure a smooth surface. Then place the mold in a hot press, and first apply a pressure of 0.5 MPa at room temperature for 30 minutes to make the mixture into a sheet. Then the pressure was released and heated to raise the temperature to 350°C, and the heat treatment was carried out at 350°C for 60 minutes to make the PVDF evenly distributed in the carbon-free, self-supporting microporous layer. Turn off the heating to allow the mold to cool naturally to room temperature, take out the obtained sheet sample from the mold, and then soak it in HCl solution for 2 hours to remove the pore-forming agent in the microporous layer and form pores inside the microporous layer, wherein the HCl solution The concentration is 2mol L ...
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