A lithium iron manganese phosphate-tungsten disulfide nanosheet lithium battery positive electrode material and preparation method thereof
A technology of lithium iron manganese phosphate and tungsten disulfide, applied in battery electrodes, batteries, nanotechnology, etc., can solve the problems of poor cycle stability, poor high temperature stability and low temperature stability of layered manganese oxide lithium structure, and achieve charging and discharging Stable cycle structure, excellent high and low temperature resistance, and increased lithium storage performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034] (1) Lithium hydroxide, ferric chloride, and phosphoric acid molar ratio Li:Fe:P=1:0.99:1.08 are mixed and dissolved in water, and the molar ratio of the amount of water to the lithium atom in the lithium compound used is 30:1. Stir and disperse at a high speed of 1400rpm in a high-speed mixer for 5 minutes to form a lithium iron phosphate precursor;
[0035] (2) Mix manganese dioxide, trimanganese tetraoxide, and lithium carbonate in molar ratios of manganese dioxide: trimanganese tetraoxide: lithium carbonate = 1:0.4:0.92, and stir at a high speed of 1400rpm in a high-speed mixer Disperse for 3 minutes to obtain a lithium manganese oxide precursor;
[0036] (3) At room temperature, first mix sodium tungstate, hydroxylamine hydrochloride and thiourea in a molar ratio of sodium tungstate: hydroxylamine hydrochloride: thiourea = 1:1.5:3, and add a certain amount of surfactant trimethyldecamyl Hexaalkylammonium bromide, reacted at a constant temperature of 100°C for 10 hour...
Embodiment 2
[0042] (1) Lithium acetate, ferric chloride, and ammonium phosphate are mixed and dissolved in water at a molar ratio of Li:Fe:P=1:1:1, and the molar ratio of the amount of water to the lithium atom in the lithium compound used is 100:1 , stirring and dispersing at a high speed of 2000rpm in a high-speed mixer for 5 minutes to form a lithium iron phosphate precursor;
[0043] (2) Mix manganese dioxide, trimanganese tetraoxide, and lithium carbonate in molar ratios of manganese dioxide: trimanganese tetraoxide: lithium carbonate = 1:0.5:1, and stir in a high-speed mixer at a speed of 5000rpm Disperse for 5 minutes to obtain a lithium manganese oxide precursor;
[0044] (3) At room temperature, first mix sodium tungstate, hydroxylamine hydrochloride and thiourea in a molar ratio of sodium tungstate: hydroxylamine hydrochloride: thiourea = 1:2:3, and add a certain amount of surfactant dodecyl Sodium sulfonate was reacted at a constant temperature of 150°C for 8 hours to obtain t...
Embodiment 3
[0050] (1) Lithium nitrate, iron sulfate, and ammonium dihydrogen phosphate are mixed and dissolved in water at a molar ratio of Li:Fe:P=1:1.03:1.08. The molar ratio of the amount of water to the lithium atom in the lithium compound used is 300: 1. Stir and disperse at a high speed of 1400rpm in a high-speed mixer for 3 minutes to form a lithium iron phosphate precursor;
[0051] (2) Mix manganese dioxide, trimanganese tetraoxide, and lithium carbonate in molar ratios of manganese dioxide: trimanganese tetraoxide: lithium carbonate = 1:0.8:0.92, and stir in a high-speed mixer at a speed of 5000rpm Disperse for 4 minutes to obtain a lithium manganese oxide precursor;
[0052] (3) At room temperature, first mix sodium tungstate, hydroxylamine hydrochloride and thiourea in a molar ratio of sodium tungstate: hydroxylamine hydrochloride: thiourea=1:1.5:3.5), and add a certain amount of surfactant polyethylene glycol Alcohol 400, reacted at a constant temperature of 200°C for 8 hou...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com