A kind of secondary battery based on calcium ion and preparation method thereof
A secondary battery, calcium ion technology, used in secondary batteries, electrolyte battery manufacturing, battery electrodes, etc., can solve the problems of poor cycle stability, potential safety hazards, and high costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0047] Correspondingly, an embodiment of the present invention also provides a method for preparing the above-mentioned secondary battery, including the following steps:
[0048] (1) Prepare the positive electrode: provide a positive electrode current collector with a clean surface, weigh the positive electrode active material, conductive agent and binder in a certain proportion, add an appropriate solvent and fully mix to form a uniform slurry; then apply the slurry evenly on the On the surface of the positive electrode current collector, a positive electrode active material layer is formed, and after being completely dried, it is pressed and cut to obtain a battery positive electrode of the desired size;
[0049] (2) Prepare the negative electrode: cut the metal foil into the required size, clean and dry the surface to obtain the negative electrode;
[0050] (3) Electrolyte preparation: Weigh a certain amount of calcium salt electrolyte and add it into the non-aqueous solven...
Embodiment 1
[0057] (1) Preparation of battery negative electrode: take tin foil with a thickness of 0.1 mm, cut it into discs with a diameter of 12 mm, clean it with ethanol, and use it as a negative electrode after drying;
[0058] (2) Prepare diaphragm: cut Celgard 2400 porous polymer film into discs with a diameter of 16 mm, wash with acetone, dry and use as diaphragm for subsequent use;
[0059] (3) Preparation of electrolyte: Weigh 1.32g calcium hexafluorophosphate and add to 0.8mL ethylene carbonate (EC), 0.8mL propylene carbonate (PC), 1.2mL dimethyl carbonate (DMC), 1.2mL methyl ethyl carbonate Ester (EMC), stir until the calcium hexafluorophosphate is completely dissolved, and use it as an electrolyte for subsequent use;
[0060](4) Preparation of battery positive electrode: Add 0.8g of artificial graphite, 0.1g of conductive carbon black, and 0.1g of polyvinylidene fluoride into 2mL of nitrogen-methylpyrrolidone solution, grind thoroughly to obtain a uniform slurry; then evenly ...
Embodiment 2-11
[0065] The preparation process of the secondary battery of Example 2-11 is different from that of Example 1, except that the materials used in the preparation of the negative electrode of the battery are different, and all other steps and materials used are the same, and the secondary battery of Example 2-11 is prepared simultaneously. The electrochemical performance was tested and compared with the performance of Example 1 of the present invention. The negative electrode materials used in Examples 2-11 and their electrochemical performance are specifically shown in Table 1.
[0066] Table 1
[0067]
[0068]
[0069] It can be seen from Table 1 that in the embodiment of the present invention, when tin foil is used as the negative electrode, the battery has higher specific capacity, better cycle performance, and the highest energy density.
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More