Method for synthesizing material for lithium ion battery consisting of nanoporous lithium iron phosphate particles
By mixing lithium, iron and phosphorus sources with carbon nanomaterials in a solvent to form a precipitation solution and calcining it, the complexity and safety issues of preparing nanoporous lithium iron phosphate particles in the existing technology are solved, and efficient and economical preparation of nanoporous lithium iron phosphate particles is achieved, thereby improving the electrochemical performance of lithium-ion batteries.
Patent Information
- Application Number
- CN202380082207.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-09-29
- Filing Date
- 2023-10-02
- Publication Date
- 2025-10-03
AI Technical Summary
Existing technologies make it difficult to prepare nanoporous lithium iron phosphate particles efficiently and economically on an industrial scale, and there are safety hazards and complex synthesis steps.
A single co-precipitation synthesis step is used to mix a lithium source, an iron (II) source, a phosphorus source and carbon nanomaterials in a solvent to form a precipitation solution, which is then calcined to form nanoporous lithium iron phosphate particles. This avoids the use of toxic organic solvents and reducing gases and is carried out under near-ambient conditions.
The method simplifies the synthesis steps on an industrial scale, reduces costs, and improves the electrical conductivity and lithium ion transport performance of nanoporous lithium iron phosphate particles, making them suitable for high-current charging and discharging.