Microscopic three-dimensional fuel cell membrane electrode manufacturing method and special mold
A technology of fuel cell membrane and manufacturing method, which is applied in the direction of battery electrodes, circuits, electrical components, etc., to achieve the effect of increasing the contact area and increasing the flow area
Active Publication Date: 2015-09-30
NANTONG BAIYING ENERGY
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Problems solved by technology
Its power density, service life, etc. have been continuously improved in recent years, and the Pt loading has been continuously reduced, but there is still a considerable gap between domestic and foreign countries.
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Embodiment Construction
[0019] In the present invention, the specific steps of the manufacturing method of the microscopic three-dimensional fuel cell membrane electrode are:
[0020] a) First select a pair of electrode-specific molds made of stainless steel or ceramic materials, such as figure 1 , 2 As shown, it includes an upper mold 1 and a lower mold 2, the upper surface of the lower mold 2 is provided with an electrode cavity 21 as an electrode area, and the lower surface of the upper mold 1 is provided with a casting film cavity 11 that can cover and exceed the electrode area; 1 has a vacuum channel 12, and the lower mold 2 has a built-in heating device.
[0021] b) if image 3 As shown, the electrode layer 3 containing the catalyst and the carrier is made by spraying, screen printing or other methods in the electrode area of the lower mold 2;
[0022] c) if Figure 4 As shown, the upper mold 1 and the lower mold 2 are closed, the lower mold 2 is heated, and the cavity formed after the up...
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The invention relates to a method for manufacturing a microcosmic three-dimensional membrane electrode for a fuel battery, and further provides a special electrode mould for realizing the method for manufacturing the microcosmic three-dimensional membrane electrode for the fuel battery. The method has the innovation points that the method comprises the steps of at first, selecting the special electrode mould, and manufacturing an electrode layer by using a lower mould; removing water inside the electrode layer in the lower mould; manufacturing a proton exchange membrane covering on the electrode layer by using an upper mould and the lower mould; manufacturing a cathode and an anode by repeatedly executing the steps through another special electrode mould which is selected again; oppositely closing the two lower moulds, so that the proton exchange membranes of the cathode and the anode are mutually and tightly adhered; and manufacturing an entire proton exchange membrane by carrying out hot-pressing on the proton exchange membranes of the cathode and the anode. The obtained proton exchange membrane is anchored on microcosmic three-dimensional membrane electrodes inside the cathode and the anode in a capillary manner; the contact area of the proton exchange membrane with the cathode and the anode is increased; and the volume of the fuel battery and the demand amount of rare metals can be greatly reduced by increasing the flow area of current within a limited space.
Description
technical field [0001] The invention relates to a membrane electrode manufacturing method, and also relates to a special mold for realizing the membrane electrode manufacturing method. Background technique [0002] With the world's various technological progress, economic development, large-scale production, higher quality of life requirements, etc., the limited fossil energy on the earth is being consumed rapidly on a large scale, and accompanied by more and more serious environmental problems. pollute. With the requirements of energy conservation, emission reduction and control of carbon emissions, the development and utilization of renewable energy and other new energy sources are being paid attention to. The hydrogen fuel cell just meets this requirement. Hydrogen fuel cells have the following characteristics: High energy conversion efficiency; directly convert the chemical energy of the fuel into electrical energy without the combustion process in the middle, so the...
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IPC IPC(8): H01M4/88
CPCY02E60/50
Inventor 李科陈融
Owner NANTONG BAIYING ENERGY