A method for manufacturing a hydrogen fuel cell bipolar plate substrate and a foil thereof
CN115740003BActive Publication Date: 2026-06-26PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
- Filing Date
- 2022-09-07
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Existing hydrogen fuel cell bipolar plate substrates struggle to balance corrosion resistance and conductivity, and current materials cannot meet the requirements of fuel cell applications.
Method used
By adding trace amounts of Cu, Nb, and Ge elements to titanium alloys, combining a composite melting method of vacuum electron beam cold hearth furnace and vacuum arc remelting furnace, and high-vacuum annealing treatment, a 0.1 mm thick titanium alloy foil was prepared, improving its conductivity and corrosion resistance.
Benefits of technology
The excellent conductivity and corrosion resistance of titanium alloy foil in hydrogen fuel cell environments were achieved, extending the service life of fuel cells and reducing weight.
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Smart Images
Figure CN115740003B_ABST
Abstract
The application discloses a hydrogen fuel cell bipolar plate substrate and a method for preparing a foil thereof. The substrate comprises the following components in percentage by weight: 0.1-0.5% of Cu, 0.5-1% of Nb, 0.05-0.2% of Ge, and the balance of Ti and inevitable impurities. The method comprises weighing the required raw materials according to the composition of the substrate to be prepared; smelting the raw materials to obtain a round ingot of a predetermined specification; performing forging and hot rolling strip processing on the round ingot to obtain a hot rolling strip; performing cold rolling processing on the hot rolling strip to obtain a titanium alloy foil; and annealing the titanium alloy foil. The application improves the electrical conductivity of the titanium alloy and the corrosion resistance of the substrate without losing the corrosion resistance and elongation of the material, thereby greatly prolonging the service life of the hydrogen fuel cell.
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