Polymeric electrolyte membrane fuel cell bulk metallic glass bipolar plate and manufacturing method thereof
A bulk metal, electrolyte membrane technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of reduced service life of polymer electrolyte membrane fuel cells, unsuitable for low-cost production, micropores and microcracks peeling off, etc. , to achieve the effects of low processing cost, low critical cooling rate, and strong crystallization inhibition ability
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Embodiment 1
[0028] According to the composition formula Zr 60-x Nb x Cu 20 al 10 Ni 10 (x=0) The desired atomic molar ratio formulation. The purity of each element Zr, Nb, Cu, Ni, Al raw material is not lower than 99.95wt%. Master alloy ingots are arc melted under argon protection and remelted at least 3 times to ensure their chemical homogeneity. The vacuum electric arc furnace current is 150A. Then adopt Cu die casting to prepare a zirconium-based massive metallic glass plate with a thickness of 0.1-3mm. The anode polarization curve and the constant potential polarization under the working conditions of the polymer electrolyte membrane fuel cell are both at 0.05MH 2 SO 4 +2ppmF - in the solution. In order to simulate the working environment of polymer electrolyte membrane fuel cells, H2 was passed through the solution during all electrochemical experiments2 or air. Corrosion rate below 16μA / cm 2 . The conductivity is higher than 5000S / cm.
Embodiment 2
[0030] According to the composition formula Zr 60-x Nb x Cu 20 Al 10 Ni 10 (x=5) The desired atomic molar ratio formulation. The purity of each element Zr, Nb, Cu, Ni, Al raw material is not lower than 99.95wt%. Master alloy ingots are arc melted under argon protection and remelted at least 3 times to ensure their chemical homogeneity. The vacuum electric arc furnace current is 150A. Then adopt Cu die casting to prepare a zirconium-based massive metallic glass plate with a thickness of 0.1-3mm. The anode polarization curve and the constant potential polarization under the working conditions of the polymer electrolyte membrane fuel cell are both at 0.05MH 2 SO 4 +2ppmF - in the solution. In order to simulate the working environment of polymer electrolyte membrane fuel cells, H2 was passed through the solution during all electrochemical experiments 2 or air. Corrosion rate below 16μA / cm 2 . The conductivity is higher than 5000S / cm.
Embodiment 3
[0032] According to the composition formula Zr 60-x Nb x Cu 20 Al 10 Ni 10 (x=15) The desired atomic molar ratio formulation. The purity of each element Zr, Nb, Cu, Ni, Al raw material is not lower than 99.95wt%. Master alloy ingots are arc melted under argon protection and remelted at least 3 times to ensure their chemical homogeneity. The vacuum electric arc furnace current is 200A. Then adopt Cu die casting to prepare a zirconium-based massive metallic glass plate with a thickness of 0.1-3mm. The anode polarization curve and the potentiostatic polarization under the working condition of polymer electrolyte membrane fuel cell are both at 1MH 2 SO 4 +2ppmF - in the solution. In order to simulate the working environment of polymer electrolyte membrane fuel cells, H2 was passed through the solution during all electrochemical experiments 2 or air. Corrosion rate below 10μA / cm 2 . The conductivity is higher than 5000S / cm.
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