Platinum electrode slurry and preparation method and application thereof
A platinum electrode and slurry technology, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve the problem of low adhesion between electrodes and silicon nitride substrates, easy detachment of electrodes, Electrode foaming and other problems, to achieve the effect of more acceptable taste, stable resistance, and not easy to deform
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[0037] (c) Preparation of flaky platinum powder: Grind the grinding tank in step (b), the rotating speed is 520 rpm, stop after grinding for 3-8 hours, rinse the metal pellet grinding material and the grinding tank with a large amount of absolute ethanol Rinse well, and filter the ground slurry to obtain solid platinum powder.
[0038] (d) Washing and drying of the flaky platinum powder: the platinum powder obtained in step (c) was washed twice with absolute ethanol, and dried at 60°C to obtain the finished flaky platinum powder. The physical parameters of the obtained flaky platinum powder are: particle size distribution of 0.8-8μm, average particle size of 1.0-1.5μm, specific surface area of 15-25m 2 / g, the tap density is 5.0-6.0g / cm 3 , the ratio of diameter to thickness is 20-50:1.
[0039] (4) Preparation of ultrafine platinum powder after heat treatment
[0040] According to the method recorded in CN 105251991 A (application number 201510801182.7), heat-treated ult...
Embodiment 1
[0047] Platinum electrode slurry was prepared as follows:
[0048] (1) Preparation of organic binder
[0049] Weigh 20 g of ethyl cellulose, 65 g of terpineol, 10 g of castor oil, and 5 g of menthyl acetate, stir and mix evenly, then heat the mixture to 85° C. until the resin dissolves, filter and remove impurities on a 500-mesh filter, and obtain organic binder.
[0050] (2) Preparation of platinum electrode slurry
[0051] Weigh the average particle size of 0.08μm, the bulk density of 0.7g / cm 3 Spherical nano-platinum powder 36g, with an average particle size of 1.2μm and a specific surface area of 0.5m 2 / g, the tap density is 5.2g / cm 3 16g of flaky platinum powder with an aspect ratio of 45:1, an average particle size of 0.8μm, and a specific surface area of 0.9m 2 / g, bulk density is 2.0g / cm 3 , The tap density is 3.5g / cm 3 Ultrafine platinum powder 108g after heat treatment and step (1) gained organic binder 40g, the above-mentioned mixture that will take by w...
Embodiment 2
[0054] Platinum electrode slurry was prepared as follows:
[0055] (1) Preparation of organic binder
[0056] Weigh 20g of polyvinyl butyral, 65g of terpineol, 10g of castor oil, and 5g of menthyl acetate, stir and mix evenly, then heat the mixture to 90°C until the resin is dissolved, and filter on a 500-mesh filter to remove impurities , to obtain an organic binder.
[0057] (2) Preparation of platinum electrode slurry
[0058] Weigh the average particle size of 0.08μm, bulk density of 0.8g / cm 3 Spherical nano-platinum powder 100g, average particle size 1.5μm, specific surface area 20m 2 / g, tap density is 5.0g / cm 3 , 30g of flaky platinum powder with an diameter-to-thickness ratio of 30:1, an average particle size of 0.8μm, and a specific surface area of 30m 2 / g, bulk density is 2.6g / cm 3 , The tap density is 4.0g / cm 3 Ultrafine platinum powder 270g after heat treatment and step (1) gained organic binder 100g, the above-mentioned mixture that will take by weighing...
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