A method for preparing lithium manganese iron phosphate

Through a multi-step process, high-performance lithium manganese oxalate, lithium dihydrogen phosphate and other materials are used for ball milling, spray drying, sintering and screening to prepare high-performance lithium manganese phosphate materials, solving the problems of complex and high cost in the existing technology, and achieving battery performance improvement and cost control.

CN119750537APending Publication Date: 2025-04-04WUXI JEWEL POWER & MATERIALS
0 Cites 0 Cited by

Patent Information

Application Number
CN202510184919.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

The prior art lacks a simple, low-cost and wide industrial application prospects for lithium manganese phosphate preparation method, which is difficult to meet the needs of lithium battery performance improvement and cost control.

Method used

A multi-step process is adopted, including ball milling, spray drying, sintering and screening of ferromanganese oxalate, lithium dihydrogen phosphate, lithium carbonate, sucrose and magnesium hydroxide, and lithium iron manganese phosphate material is prepared through inert gas atmosphere and specific temperature control.

Benefits of technology

The high energy density, excellent low temperature performance, improved safety and reduced costs of lithium manganese iron phosphate materials have been achieved, which significantly improves the overall performance and economic benefits of the battery.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a method for preparing lithium iron manganese phosphate, belonging to the technical field of lithium batteries; the invention provides a method for preparing lithium iron manganese phosphate, comprising the following steps: step 1: putting manganese iron oxalate, lithium dihydrogen phosphate, lithium carbonate, sucrose, and magnesium hydroxide into equipment in sequence, adding anhydrous ethanol and then ball milling to obtain slurry A; step 2: filtering the slurry A in step 1 through a 100-mesh drying net, spray drying to obtain powder B; step 3: placing the powder B in step 2 under an inert gas atmosphere, sintering to obtain sintered material C; step 4: ball milling the sintered material C in step 3, polyvinyl alcohol, and anhydrous ethanol to obtain slurry D; step 5: spray drying the slurry D in step 4 to obtain powder E; step 6: placing the powder E in step 4 under an inert gas atmosphere, sintering to obtain sintered material F, cooling and crushing the screen to obtain lithium iron manganese phosphate. The method is simple, low-cost, and suitable for industrialization.
Need to check novelty before this filing date? Find Prior Art