一种基于非金属极板的水电解制氢装置

Abstract

本实用新型公开了一种基于非金属极板的水电解制氢装置，涉及质子交换膜水电解领域，包括：阳极端板、阳极单极板、阴极单极板和阴极端板，所述阳极单极板和阴极单极板至少一块为非金属极板，或，包括：阳极端板、阳极单极板、至少一块双极板、阴极单极板和阴极端板，所述阳极单极板、阴极单极板和双极板至少一块为非金属极板，所述非金属极板包括非金属基体和导电层，所述导电层分体设置在该非金属基体的两侧或一体化嵌入该非金属基体中，相邻两极板的导电层之间设有膜电极。本实用新型能够改善传统水电解制氢装置的腐蚀情况。

Claims

1. A non-metallic plate-based water electrolysis hydrogen generation device, characterized by, include: The device comprises an anode end plate, an anode monopolar plate, a cathode monopolar plate, and a cathode end plate, wherein at least one of the anode monopolar plate and the cathode monopolar plate is a non-metallic plate. The non-metallic plate includes a non-metallic substrate and a conductive layer. The conductive layer is separately disposed on both sides of the non-metallic substrate or integrally embedded in the non-metallic substrate. A membrane electrode is provided between the conductive layers of adjacent plates. At least one of the anode monopolar plate and the cathode monopolar plate is a non-metallic plate. The anode end plate, the anode monopolar plate, the cathode monopolar plate, the membrane electrode, and the cathode end plate are stacked and assembled in sequence to form a fuel cell stack. Alternatively, it may include: an anode end plate, an anode monopolar plate, at least one bipolar plate, a cathode monopolar plate, and a cathode end plate, wherein at least one of the anode monopolar plate, cathode monopolar plate, and bipolar plate is a non-metallic plate, the non-metallic plate includes a non-metallic substrate and a conductive layer, the conductive layer is separately disposed on both sides of the non-metallic substrate or integrally embedded in the non-metallic substrate, a membrane electrode is provided between the conductive layers of adjacent plates, and the anode end plate, anode monopolar plate, at least one bipolar plate, cathode monopolar plate, and cathode end plate are stacked sequentially to form a fuel cell stack.

2. The non-metallic plate-based water electrolysis hydrogen generation device according to claim 1, characterized in that, The conductive layer comprises a corresponding anode conductive layer and a cathode conductive layer. The anode conductive layer is correspondingly disposed on the inner side of the non-metallic anode monopolar plate; the anode conductive layer and the cathode conductive layer are correspondingly disposed or embedded on both sides of the non-metallic bipolar plate; the cathode conductive layer is correspondingly disposed on the inner side of the non-metallic cathode monopolar plate; the corresponding anode conductive layer and the cathode conductive layer of the non-metallic substrate are electrically connected through an inter-anode conductor; the anode conductive layer and the cathode conductive layer embedded in the non-metallic substrate are directly electrically connected; the membrane electrode comprises a correspondingly arranged anode diffusion layer, a catalyst coating membrane (CCM), and a cathode diffusion layer.

3. The non-metallic plate-based water electrolysis hydrogen generation device of claim 1, wherein, The bipolar plate has several anode fluid channels and several cathode fluid channels on its two sides, and flow field ribs are provided between adjacent fluid channels.

4. The non-metallic plate-based water electrolysis hydrogen generation device of claim 2, wherein, A sealing gasket is provided between the electrode plate and the conductive layer.

5. The non-metallic plate-based water electrolysis hydrogen generation device of claim 3, wherein, The shapes of the anode fluid channel and the cathode fluid channel include any one of the following: parallel flow field, serpentine flow field, interdigitated flow field, and three-dimensional micro-lattice flow field.

6. The non-metallic plate-based water electrolysis device for hydrogen production of any one of claims 2 to 5, wherein, The anode end plate, anode monopole plate, at least one non-metallic electrode plate, cathode monopole plate, and cathode end plate are provided with through holes for assembly. The stack is assembled by passing through all the through holes with bolts wrapped with insulating sleeves on the surface.

7. The non-metallic plate-based water electrolysis device for hydrogen production of claim 2, wherein, The diffusion layer is made of one or more materials, such as carbon paper, sintered metal plate, metal mesh, and metal felt.

8. The non-metallic plate-based water electrolysis device for hydrogen production of any one of claims 2 to 5, wherein, The non-metallic matrix is ​​made of one or more materials, including tetrafluoroethylene, polyethylene, polyvinyl chloride, polycarbonate and ABS resin, ceramic materials and their modified materials.

9. The non-metallic plate-based water electrolysis hydrogen generation device of claim 8, wherein, The non-metallic electrode plate is manufactured by injection molding, machining or additive manufacturing.

10. The non-metallic plate-based water electrolysis device for hydrogen production of any one of claims 2 to 5, wherein, The connection method for the electron channel formed by the conductive layer and the diffusion layer of the non-metallic electrode is lap joint or welding.

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