A kind of gas diffusion catalytic electrode and its preparation method and its application in rechargeable zinc-air battery
A catalytic electrode and gas diffusion technology, which is applied to fuel cell type half cells and secondary cell type half cells, battery electrodes, circuits, etc. Low cost, good use effect, good catalytic activity effect
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Embodiment 1
[0032] Embodiment 1: The gas diffusion catalytic electrode comprises a porous metal substrate, and oxidized and exfoliated graphite microflakes attached to the substrate, active catalysts are attached to the surface of the graphite microflakes, and the graphite microflakes are in an upright state, and their microscopic appearance is as follows: figure 2 shown.
[0033] Such as figure 1 As shown, the specific preparation steps of the preparation method of the gas diffusion catalytic electrode are as follows:
[0034] (1) Mix natural graphite flakes with binders and solvents to make a slurry, spread (coat) the slurry evenly on the porous metal substrate, and arrange a waterproof and breathable membrane on one side of the porous metal substrate. Dry under vacuum conditions to obtain a graphite composite electrode, and the waterproof and breathable membrane is pasted on one side of the porous metal substrate through the slurry;
[0035] (2) Put the graphite composite electrode ...
Embodiment 2
[0045] Embodiment 2: The gas diffusion catalytic electrode includes a porous metal substrate, and oxidized and exfoliated graphite microflakes attached to the substrate. The surface of the graphite microflakes is attached with an active catalyst. After the microsheet structure, its microscopic appearance is as follows figure 2 shown.
[0046] Such as figure 1 As shown, the specific preparation steps of the preparation method of the gas diffusion catalytic electrode are as follows:
[0047] (1) Mix natural graphite flakes with binders and solvents to make a slurry, spread (coat) the slurry evenly on the porous metal substrate, and arrange a waterproof and breathable membrane on one side of the porous metal substrate. 1. Dry under the negative pressure of 0.06MPa to obtain a graphite composite electrode, and the waterproof and breathable membrane is pasted on one side of the porous metal substrate through the slurry;
[0048] (2) Put the graphite composite electrode in the s...
Embodiment 3
[0052] Embodiment 3: The gas diffusion catalytic electrode includes a porous metal substrate, and oxidized and exfoliated graphite microflakes attached to the substrate. The surface of the graphite microflakes is attached with an active catalyst, and the graphite microflakes are in an upright state, that is, the natural flake graphite has undergone electrochemical exfoliation. The subsequent microchip structure.
[0053] Such as figure 1 As shown, the specific preparation steps of the preparation method of the gas diffusion catalytic electrode are as follows:
[0054] (1) Mix natural graphite flakes with binders and solvents to make a slurry, spread (coat) the slurry evenly on the porous metal substrate, and arrange a waterproof and breathable membrane on one side of the porous metal substrate. 1. Dry under the negative pressure of 0.1MPa to obtain a graphite composite electrode, and the waterproof and breathable membrane is pasted on one side of the porous metal substrate th...
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Abstract
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