Method for preparing lithium iron phosphate by using wood fibers as carbon source
A lithium iron phosphate and wood fiber technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of unsatisfactory ionic and electronic conductivity, increase production cost, increase production difficulty, etc., and achieve good application prospects. , low cost, excellent cycle performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0019] 1. Add 0.025mol lithium carbonate, 0.025mol iron oxide, 0.05mol ammonium dihydrogen phosphate, 0.5~2g lignocellulose into the ball mill tank, add 40ml acetone, and mix by wet ball mill for 24 hours;
[0020] 2. Dry the slurry after wet ball milling at 120°C for 2 hours until completely dry;
[0021] 3. Pre-burn at 350°C for 10 hours under the protection of an inert atmosphere. After the pre-fired material is fully ground, it is again placed under an inert protective atmosphere and sintered at 600-650°C for 5-15 hours;
[0022] 4. The sintered product is ground to obtain lithium iron phosphate powder;
[0023] 5. Characterization of results:
[0024] (1) by the attached figure 1 It can be seen that the final product obtained under various conditions is lithium iron phosphate with a pure-phase olivine structure, and no obvious crystal phase impurities exist;
[0025] (2) by the attached figure 2 It can be seen that the primary particles of the product are spherical,...
Embodiment 2
[0028] 1. Add 0.025mol lithium carbonate, 0.05mol ferrous oxalate, 0.05mol ammonium dihydrogen phosphate, 0.5~2g lignocellulose into the ball mill tank, add 40ml acetone, and mix by wet ball mill for 24 hours;
[0029] 2. Dry the slurry after wet ball milling at 120°C for 2 hours until completely dry;
[0030] 3. Pre-burn at 350°C for 10 hours under the protection of an inert atmosphere. After the pre-fired material is fully ground, it is again placed under an inert protective atmosphere and sintered at 600-650°C for 5-15 hours;
[0031] 4. The sintered product is ground to obtain lithium iron phosphate powder;
[0032] 5. Characterization of results:
[0033] (1) by the attached image 3 It can be seen that the final product obtained is lithium iron phosphate with a pure phase olivine structure, and there is no obvious crystal phase impurity;
[0034] (2) by the attached figure 2 It can be seen that the primary particles of the product are spherical, with an average par...
Embodiment 3
[0037] 1. Add 0.05mol lithium dihydrogen phosphate, 0.025mol iron oxide, and 0.5~2g lignocellulose into the ball mill, add 40ml acetone, and mix for 2 hours by wet ball milling;
[0038] 2. Dry the slurry after wet ball milling at 120°C for 2 hours until completely dry;
[0039] 3. Pre-burn at 350°C for 10 hours under the protection of an inert atmosphere. After the pre-fired material is fully ground, it is again placed under an inert protective atmosphere and sintered at 600-650°C for 5-15 hours;
[0040] 4. The sintered product is ground to obtain lithium iron phosphate powder;
[0041] 5. Characterization of results:
[0042] (1) by the attached image 3 It can be seen that the final product obtained is lithium iron phosphate with a pure phase olivine structure, and there is no obvious crystal phase impurity;
[0043] (2) by the attached figure 2 It can be seen that the primary particles of the product are spherical, with an average particle size of about 500nm;
[0...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More