A kind of lead-acid battery positive plate and its preparation method and battery
A technology for lead-acid batteries and positive plates, applied in the direction of lead-acid battery electrodes, lead-acid batteries, battery electrodes, etc., can solve the problems of shedding cost, easy softening of positive electrode paste, etc., increase manufacturing costs, reduce charge and discharge time, Slows down softening and swelling effects
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[0046] The invention discloses a method for preparing a positive plate of a lead-acid storage battery, which comprises the following steps:
[0047] Step 11. mixing raw material graphite, polytetrafluoroethylene emulsion and lead oxide;
[0048] Step 12. Add an appropriate amount of dispersant to completely infiltrate the raw materials, stir to obtain a paste mixture and roll it into thin slices;
[0049] Step 13. Prepare the positive lead paste and apply it on the grid to obtain the initial plate;
[0050] Step 14. Attach the thin sheet as a protective layer to both sides of the original plate, perform acid leaching and pressure roller curing to obtain the positive plate of the lead-acid battery. During curing, the dispersant dries and evaporates to form micropores in the protective layer.
[0051] In step 11, the raw material components are 0.01%-10% of graphite, 0.01%-10% of polytetrafluoroethylene emulsion, and 80%-99.98% of lead oxide in terms of mass fraction. Prefera...
Embodiment 1
[0064] The present embodiment provides a kind of preparation method of lead-acid storage battery positive plate, comprises the following steps:
[0065] Step 11. Mix 1 g of graphite, 1 g of polytetrafluoroethylene emulsion, and 20 g of lead oxide; the graphite is flake graphite, and the polytetrafluoroethylene solid content (mass) in the polytetrafluoroethylene emulsion is 55%.
[0066] Step 12. Add 50ml of alcohol to completely infiltrate the raw materials, and then stir while heating; the heating temperature is 45°C, stir to form a paste, and roll the paste mixture into a 0.2mm thick sheet.
[0067] Step 13. Follow the normal production process and prepare the positive electrode lead paste and apply it on the grid to obtain the initial plate.
[0068] Step 14. Attach the thin sheet as a protective layer to both sides of the original plate, perform acid leaching and pressure roller curing according to the normal production process to obtain the positive plate of the lead-acid...
Embodiment 2
[0071] The present embodiment provides a kind of preparation method of lead-acid storage battery positive plate, comprises the following steps:
[0072] Step 11. Mix 0.5 g of graphite, 1 g of polytetrafluoroethylene emulsion, and 15 g of lead oxide; the graphite is flake graphite, and the polytetrafluoroethylene solid content (mass) in the polytetrafluoroethylene emulsion is 50%.
[0073] Step 12. Add 30ml of alcohol to completely infiltrate the raw materials, and then stir while heating; the heating temperature is 40°C, stir to form a paste, and roll the paste mixture into a 0.05mm thick sheet.
[0074] Step 13. Follow the normal production process and prepare the positive electrode lead paste and apply it on the grid to obtain the initial plate.
[0075] Step 14. Attach the thin sheet as a protective layer to both sides of the original plate, perform acid leaching and pressure roller curing according to the normal production process to obtain the positive plate of the lead-a...
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Abstract
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