Tubular lithium-rich anode material, preparation method and application thereof
A lithium-rich positive electrode material, tubular technology, applied in the field of tubular lithium-rich positive electrode materials and their preparation, can solve the general problems of cycle stability, and achieve the effects of improved cycle stability, increased buffer volume change, and high cycle stability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] MnSO 4 ·H 2 O is dissolved in deionized water to give Mn 2+ A solution with a concentration of 0.02mol / L; add KClO to the above solution 3 , KClO 3 The molar addition amount is Mn 2+ 3 times the molar weight, sealed in a high-pressure reactor and heated to 170°C, cooled after 36 hours of reaction, collected the solid product, washed alternately with deionized water and absolute ethanol, and dried to obtain a tubular structure of β-MnO 2 ; Then the tubular structure of β-MnO 2 with LiOH·H 2 O is mixed evenly at a molar ratio of 1:2, heated to 500°C at 2°C / min and kept for 20 hours, and cooled to obtain the final product Li with a tubular structure. 2 MnO 3 .
[0036] The X-ray diffraction pattern, scanning electron microscope figure and transmission electron microscope figure of gained material are respectively as follows Figure 1 to Figure 3 , where the X-ray diffraction peaks can be attributed to Li 2 MnO 3 , it can be seen from the scanning electron micros...
Embodiment 2
[0039] MnSO 4 ·H 2 O is dissolved in deionized water to give Mn 2+ A solution with a concentration of 0.05mol / L; add KClO to the above solution 3 , KClO 3 The molar addition amount is Mn 2+ 5 times the molar weight, sealed in a high-pressure reactor and heated to 180°C, cooled after 24 hours of reaction, collected the solid product, washed alternately with deionized water and absolute ethanol, and dried to obtain a tubular structure of β-MnO 2 ; Then the tubular structure of β-MnO 2 with LiNO 3 Mix evenly at a molar ratio of 1:2, heat up to 550°C at 2°C / min and keep it warm for 16 hours, then cool to obtain the final product Li with a tubular structure 2 MnO 3 .
[0040] The X-ray diffraction peaks of the resulting material can be attributed to the Li 2 MnO 3 , It can be seen from the scanning electron microscope and transmission electron microscope images that the obtained material presents a tubular structure, the length of the tube is 1 micron to 3 microns, the ou...
Embodiment 3
[0043] MnSO 4 ·H 2 O is dissolved in deionized water to give Mn 2+ A solution with a concentration of 0.1mol / L; add KClO to the above solution 3 , KClO 3 The molar addition amount is Mn 2+ 6 times the molar weight, sealed in a high-pressure reactor and heated to 190°C, cooled after 16 hours of reaction, collected the solid product, washed alternately with deionized water and absolute ethanol, and dried to obtain a tubular structure of β-MnO 2 ; Then the tubular structure of β-MnO 2 with lithium acetate (CH 3 COOLi) was mixed evenly at a molar ratio of 1:2, heated to 600°C at 2°C / min and kept for 12 hours, then cooled to obtain the final product Li with a tubular structure. 2 MnO 3 .
[0044] The X-ray diffraction peaks of the resulting material can be attributed to the Li 2 MnO 3 , it can be seen from the scanning electron microscope and transmission electron microscope images that the obtained material presents a tubular structure, the length of the tube is 2 micron...
PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More