Synthesis method of battery positive material lithium manganese phosphate

A lithium manganese phosphate and battery positive electrode technology, which is applied to battery electrodes, phosphorus compounds, secondary batteries, etc., can solve the problems of high cobalt and nickel metal prices, overheating and ignition, and heavy pollution, so as to achieve no three wastes, save costs, and measure accurate effect

Inactive Publication Date: 2018-11-23
HEFEI ASIALON CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

This patented process simplifies it by producing Lithiated Manganum Phosphates (LMP) with high purity without excessive chemicals or other harmful substances being released into the surrounding area during production. It also uses recycled ethyleneglycol instead of expensive materials like citric acid because they are more effective at removing certain compounds from LMP than others. Additionally, this new technique allows for efficient recovery of alcohols that were previously lost through various processes involved beforehand. Overall, these technical results improve efficiency, lowering manufacturing costs while maintaining good products' qualifications

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the stability and durability of laminar phase transition metal oxide materials like LixCoO2/LiyFe1.8 , where they play important roles during redox processes involving fast chargings with large currencies. Specifically, it highlights how different methods may improve upon the physical characteristics of certain compounds while reducing costs compared to traditional ones.

Method used

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Embodiment Construction

[0026] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] A kind of synthetic method of lithium manganese phosphate of battery cathode material, comprises following specific steps:

[0028] The preparation of manganese acetate: the electrolytic manganese that weighs 500kg is added in the 500L glass-lined reactor, feeds inert gas nitrogen, replaces the air in the reactor, makes the explosion limit of hydrogen lower than 4.1%, then adds acetic acid solution, seals Reaction, release hydrogen after the reaction finishes, obtain manganese acetate;

[0029] (2) Preparation of lithi

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Abstract

The invention discloses a synthesis method of battery positive material lithium manganese phosphate. The synthesis method comprises the following steps: adding electrolytic manganese into an acetic acid solution, performing a sealed reaction to form manganese acetate, and discharging hydrogen; adding battery-grade lithium carbonate into phosphoric acid to form lithium dihydrogen phosphate; addingthe prepared lithium dihydrogen phosphate into manganese acetate to synthesize lithium manganese phosphate; circularly applying the evaporated acetic acid to preparation of manganese acetate, and grinding and packaging lithium manganese phosphate. The synthesis method disclosed by the invention has the advantages of simple synthesis technology of lithium manganese phosphate, accurate measurement,no three wastes, low cost, prevention of lots of wastewater hard to deal with and environmental friendliness.

Description

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Claims

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Application Information

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Owner HEFEI ASIALON CHEM
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