Aluminum-phosphate coated lithium-nickel-cobalt-aluminate positive electrode material and preparation method thereof
A technology of nickel-cobalt-lithium-aluminate and positive electrode materials, which is applied in the direction of battery electrodes, electrical components, electrochemical generators, etc., can solve the problems of reduced discharge capacity, poor structural stability, material cycle life and safety hazards, etc. Achieve the effects of improving cycle life and safety performance, solving precipitation problems, and thin and uniform coating layer
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] A kind of preparation method of the nickel cobalt lithium aluminate cathode material of coating aluminum phosphate, specifically implement according to the following steps:
[0036] Add 1000g nickel-cobalt-aluminum lithium aluminate with a molar ratio of 80:15:5 to 3000g water, fully stir at a speed of 50r / min, press AlPO 4 Coating amount is 0.5%, Al:PO 4 3- =1:1.1 Simultaneously add aluminum sulfate and ammonium dihydrogen phosphate solutions with concentrations of 0.05mol / L and 0.1mol / L respectively, and ensure that the addition is completed within 0.5h, filter, dry, and heat-treat at 450°C in an air atmosphere 5h, the nickel-cobalt-lithium-aluminate cathode material coated with AlPO4 was obtained.
[0037] Using the above material as the positive electrode and metal lithium sheet as the negative electrode to assemble a button battery for charge and discharge comparison test, the positive electrode material obtained by the method of the present invention has a speci...
Embodiment 2
[0039] A kind of preparation method of the nickel cobalt lithium aluminate cathode material of coating aluminum phosphate, specifically implement according to the following steps:
[0040] Add 1000g nickel-cobalt-aluminum lithium aluminate with a molar ratio of 89:8:3 to 5000g water, fully stir at a speed of 50r / min, press AlPO 4 Coating amount is 0.1%, Al: PO4 3- ==1:1.1 Simultaneously add aluminum sulfate and ammonium dihydrogen phosphate solutions with concentrations of 0.05mol / L and 0.1mol / L respectively, and ensure that the addition is completed within 1.5h, filter, dry, and store in air at 480°C After heat treatment for 5 hours, the nickel-cobalt-lithium-aluminate cathode material coated with AlPO4 was obtained.
[0041] Using the above material as the positive electrode and the metal lithium sheet as the negative electrode to assemble a button battery for charge and discharge comparison tests, the positive electrode material obtained by the method of the present invent...
Embodiment 3
[0043] A kind of preparation method of the nickel cobalt lithium aluminate cathode material of coating aluminum phosphate, specifically implement according to the following steps:
[0044] Add 1000g nickel-cobalt-aluminum lithium aluminate with a molar ratio of 85:10:5 to 6000g water, fully stir at a speed of 50r / min, press AlPO 4 Coating amount is 0.2%, Al:PO 4 3- ==1:1.1 Simultaneously add aluminum sulfate and ammonium dihydrogen phosphate solutions with concentrations of 0.05mol / L and 0.1mol / L respectively, and ensure that the addition is completed within 1.5h, filter, dry, and store in an air atmosphere at 455°C After heat treatment for 4 hours, the AlPO4-coated nickel-cobalt-lithium-aluminate cathode material was obtained.
[0045] Using the above material as the positive electrode and the metal lithium sheet as the negative electrode to assemble a button battery for charge and discharge comparison tests, the positive electrode material obtained by the method of the pre...
PUM

Abstract
Description
Claims
Application Information

- Generate Ideas
- Intellectual Property
- Life Sciences
- Materials
- Tech Scout
- Unparalleled Data Quality
- Higher Quality Content
- 60% Fewer Hallucinations
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com