Copper hydroxystannate micro-nano particles for lithium ion battery negative electrode and preparation method
A technology of copper hydroxystannate and lithium ion battery, which is applied in the field of material chemistry to achieve the effects of improving cycle performance, strong market prospects and development potential, and good cycle performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0035] A preparation method of lithium battery negative electrode material, the specific steps are:
[0036] (1) Weigh an appropriate amount of copper salt and tin salt according to the molar ratio of 0.8-1.2.
[0037] (2) Add copper salt to a certain amount of deionized water, stir for 10-60 minutes to mix evenly, and obtain 0.01-5mol L -1 The solution, then add excess ammonia water to this solution, continue to stir for 20-60 minutes.
[0038] (3) Add an appropriate amount of tin salt to deionized water to obtain 0.01-6mol L -1 , Stir for 10-60 minutes, add to the solution obtained in step (2) after mixing evenly, and stir for 20-60 minutes to complete the reaction.
[0039] (4) Centrifuge the precipitate, 60-90 o C dried for more than 6 hours to obtain the product.
[0040] The copper salts are soluble copper salts such as copper sulfate, copper chloride, and copper nitrate.
[0041] The tin salts are soluble tin salts such as tin dichloride and tin tetrachloride.
[...
Embodiment 1
[0046] 1. Experimental steps:
[0047] (1) Weigh 0.2g of copper sulfate, dissolve it in 16mL of deionized water, stir until the powder is completely dissolved, and then add excess ammonia water.
[0048] (2) Weigh 0.28g of tin tetrachloride, dissolve it in 16mL of deionized water, and stir until the powder is completely dissolved.
[0049] (3) Add the solution obtained in step (2) to the mixture obtained in step (1), stir and react for 20 minutes, centrifuge, 60 o C drying to obtain copper hydroxystannate micro-nano particles.
[0050] 2. Product characterization:
[0051] (1) if Picture 1-1 As shown in the X-ray diffractometer (XRD) figure of the product obtained in Example 1, the diffraction peak of the obtained product is completely consistent with the standard card (No.70-117) of copper hydroxystannate, and the obtained product is pure.
[0052] (2) Figure 1-2 , 1-3 It is a scanning electron microscope (SEM) picture of the product obtained in Example 1. It can be se...
Embodiment 2
[0056] 1. Experimental steps:
[0057] (1) Weigh 0.0008mol copper chloride, dissolve it in 16mL deionized water, stir until the powder is completely dissolved, and then add excess ammonia water.
[0058] (2) Weigh 0.0008mol tin tetrachloride, dissolve it in 16mL deionized water, and stir until the powder is completely dissolved.
[0059] (3) Add the solution obtained in step (2) to the mixture obtained in step (1), stir and react for 20 minutes, centrifuge, 60 o C drying to obtain copper hydroxystannate micro-nano particles.
[0060] 2. The Scanning Electron Microscope (SEM) picture of the product obtained in Example 2 Figure 2-1, 2-2 As shown, it can be seen from the figure that the obtained products are particles, and they are uniform respectively, with a particle size of 1.5-3 μm.
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More