一种超高电密多层金属复合型制氢电解槽
By employing a multi-layer metal composite structure in the hydrogen electrolyzer, utilizing a combination of carbon steel plate, pure copper layer, and nickel-based alloy or titanium alloy layer, the corrosion problem of bipolar plates under ultra-high electrical density was solved, achieving uniformity of the electrolysis reaction and durability of the equipment, while reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 郑州宇光复合材料有限公司
- Filing Date
- 2025-10-29
- Publication Date
- 2026-07-17
AI Technical Summary
Under ultra-high electrical density conditions, the bipolar plates of existing hydrogen electrolyzers are easily broken down by the current, leading to coating corrosion, increasing equipment costs and processing difficulty, and resulting in uneven electrolysis reactions.
A multi-layer metal composite structure is adopted, including carbon steel plate, pure copper layer and nickel-based alloy or titanium alloy layer, to form composite end plate and bipolar plate. Nickel-based alloy or titanium alloy layer serves as alkali corrosion resistant layer, copper layer is used for conductivity and electric field uniformity. Composite is achieved through laser cladding and explosive welding technology to enhance current breakdown resistance.
It improves the corrosion resistance and uniformity of electrolytic reaction of the equipment under high electrical density conditions, reduces equipment cost and processing difficulty, and extends service life.
Smart Images
Figure CN224513633U_ABST
Abstract
Claims
1. An ultra-high field density multi-layer metal composite type hydrogen production electrolyzer, characterized in that: The device includes a centrally located diaphragm, and cathode and anode electrodes located on either side of the diaphragm. To the left of the cathode electrode, a left sealing gasket, a left bipolar plate, and a left end plate are sequentially arranged. To the right of the anode electrode, a right sealing gasket, a right bipolar plate, and a right end plate are sequentially arranged. All components—end plates, bipolar plates, sealing gaskets, cathode electrodes, diaphragm, and anode electrodes—are circular. The outer diameter of the left and right end plates is larger than that of the bipolar plates, and each end plate has two symmetrical mounting holes. Fastening bolts are horizontally inserted into the mounting holes of the left and right end plates to fix the bipolar plates, sealing gaskets, cathode electrodes, diaphragm, and anode electrodes between the left and right end plates. Both the end plates and the bipolar plates have a nickel-based alloy or titanium alloy plate layer on one side of their working surface. The thickness of the nickel-based alloy or titanium alloy plate layer is 0.2~1.0 mm. A circular groove is located at the center of one side of the working surface of the end plate, and the centers of both sides of the bipolar plates are located in the groove.
2. The ultra-high specific conductivity multi-layer metal composite type hydrogen production electrolyzer according to claim 1, characterized in that: Both left and right end plates are multi-layered composite end plates, including a circular carbon steel plate, a pure copper layer, an annular carbon steel plate, and a nickel-based alloy or titanium alloy layer arranged in sequence. The annular carbon steel plate and the nickel-based alloy or titanium alloy layer are combined to form a composite circular plate with a groove in the center.
3. The ultra-high specific conductivity multi-layer metal composite type hydrogen production electrolyzer according to claim 1, characterized in that: The bipolar plate is welded together from an annular composite electrode frame and a central composite main electrode plate, and the thickness of the annular composite electrode frame is greater than the thickness of the central composite main electrode plate. The annular composite electrode frame is made of carbon steel plate laser clad with nickel-based alloy or titanium alloy powder metallurgy. The composite main electrode plate is composed of three layers: a nickel-based alloy or titanium alloy plate, a carbon steel plate, and a nickel-based alloy or titanium alloy plate.
4. The ultra-high specific conductivity multi-layer metal composite type hydrogen production electrolyzer of claim 3, wherein: The outer side of the right end plate is provided with a through electrolyte inlet / outlet and a gas outlet.
5. The ultra-high specific conductivity multi-layer metal composite type hydrogen production electrolyzer of claim 1, wherein: The thickness of the annular carbon steel plate is 0.2~1.0mm, the thickness of the pure copper plate is 5~10mm, and the thickness of the circular carbon steel plate is 20~150mm.
6. The ultra-high specific conductivity multi-layer metal composite type hydrogen production electrolyzer of claim 1, wherein: The thickness of the carbon steel plate at the composite main electrode plate is 0.5~2mm, and the thickness of the carbon steel plate in the composite electrode frame is 6~20mm.