A kind of preparation method of high performance calcium manganate energy storage electrode material
A high-performance calcium manganate and energy storage electrode technology, applied in battery electrodes, circuits, electrical components, etc., to achieve the effect of wide source of raw materials, simple preparation method, and increased conductivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0023] 1), the preparation of high-performance calcium manganate energy storage electrode material, comprising the following steps:
[0024] S1), put 0.1mol L -1 Calcium chloride, 0.2mol L -1 Manganese salt and 0.75mol L -1 Potassium hydroxide is dissolved in a mixed solvent with a ratio of ethanol and water of 5:3, and after stirring to complete dissolution, a precursor solution is obtained, wherein the manganese salt is a mixture of manganese chloride and potassium permanganate, wherein, The manganese salt is the mass ratio of manganese chloride and potassium permanganate of 8:2;
[0025] S2), pour the precursor solution into the reaction kettle, react in an oven at 150 ° C for 12h, then centrifuge, wash, and dry to synthesize CaMn 2 O 4 Powder, denoted as CaMn 2 O 4 -blank;
[0026] S3), the CaMn synthesized in step S2) 2 O 4 Powder CaMn 2 O 4 -blank is placed in a tube furnace, annealed for 90 minutes under the atmosphere of ammonia gas and at a temperature of 7...
Embodiment 2-5
[0035] Based on the scheme of Example 1, the properties of calcium manganate after annealing are affected by adjusting different annealing conditions, and the relationship is shown in Table 1.
[0036] Table 1: Annealing regulation of calcium manganate
[0037]
[0038]
[0039] Among them, Examples 1, 2 and 3 illustrate that the annealing temperature has a great influence on the properties of manganic acid, and Examples 1, 4 and 5 illustrate that the time factor also affects the properties of calcium manganate to a certain extent. The performance of calcium manganate after annealing in Examples 2 to 5 is inferior to the case of Example 1. As can be seen from the above examples, in the atmosphere of ammonia, calcium manganate CaMn 2 O 4 After the annealing reaction, the morphology of the material is changed, the conductivity is increased, and the active sites are increased, thereby effectively improving the specific capacity and rate capability of calcium manganate.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More