Flexible lithium ion battery and packaging method thereof
A lithium-ion battery, flexible battery technology, applied in battery electrodes, secondary batteries, battery pack components, etc., can solve problems such as the immaturity of flexible lithium-ion batteries, and achieve low cost of raw materials, high specific electric capacity, and high practicality. effect of value
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[0030] Examples:
[0031] 1. Prepare the battery electrode material, cut the prepared zinc cobaltate / carbon cloth composite negative electrode material and lithium cobaltate positive electrode material into electrode sheets (3cm×5cm) of the same area, and cut a piece of separator (Celgard2400). Connect the aluminum tab to the positive electrode tab, and the nickel tab to the negative electrode tab;
[0032] 2. Put the prepared aluminum plastic film in the order of positive electrode sheet-diaphragm-negative electrode sheet, and then seal the three sides of the film with a packaging machine, leaving one side for subsequent infusion of 1.05mol / L LiPF 6 Electrolyte (of which LiPF 6 Dissolved in a solution with a volume ratio of EC to DEC of 1:1);
[0033] 3. Put the entire aluminum plastic film into the glove box, pour electrolyte into the unsealed side, put the aluminum plastic film into a plastic bag and take it out of the glove box, and seal the unsealed side of the aluminum plastic ...
Example Embodiment
[0037] Example 1
[0038] The carbon cloth was cleaned ultrasonically in acetone, water, and ethanol in sequence, and cut into a uniform area (4cm×2cm) after drying, and a piece of carbon cloth was put into the lining of the autoclave. Dissolve 1mmol zinc nitrate, 2mmol cobalt nitrate and 5mmol urea in 35ml deionized water, transfer to the lining of the autoclave filled with carbon cloth, screw the lid of the reactor and put it in a drying oven at 120℃ for 5h. After the reaction, it was cooled to room temperature naturally, and the sample was taken out and calcined in a muffle furnace at 400° C. for 2 h.
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[0039] Example 2
[0040] The carbon cloth was cleaned using the cleaning method in Example 1. Dissolve 1mmol zinc nitrate, 2mmol cobalt nitrate, 2mmol ammonium fluoride and 5mmol urea in 35ml deionized water, and transfer to the lining of the autoclave filled with carbon cloth. Tighten the lid of the reactor and put it in the oven at 120℃ After reacting in the box for 5 hours, after the reaction, the sample is naturally cooled to room temperature, and the sample grown on the carbon cloth is calcined in a muffle furnace at 400° C. for 2 hours to obtain a very uniform and orderly zinc cobaltate nanowire array on the carbon cloth. Comparative Example 1 shows that the addition of ammonium fluoride has a greater impact on the reaction system, and fluoride ions promote the growth of the sample on the carbon cloth substrate.
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