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Method for preparing lithium manganate electrode material based on EMD, lithium manganate electrode material and application of lithium manganate electrode material

An electrode material, lithium manganate technology, applied in manganate/permanganate, positive electrode, battery electrode, etc., can solve the problems of high energy consumption, complex process steps, long reaction period and so on

Pending Publication Date: 2022-05-06
HUNAN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method has complex process steps, long reaction cycle, high energy consumption and high production cost

Method used

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  • Method for preparing lithium manganate electrode material based on EMD, lithium manganate electrode material and application of lithium manganate electrode material
  • Method for preparing lithium manganate electrode material based on EMD, lithium manganate electrode material and application of lithium manganate electrode material
  • Method for preparing lithium manganate electrode material based on EMD, lithium manganate electrode material and application of lithium manganate electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw materials: 1. Electrolytic manganese dioxide (EMD), manufacturer: Hunan Shunlong New Energy. 2. Battery grade lithium hydroxide monohydrate, manufacturer: Sichuan Xingsheng Lithium Industry. 3. Anhydrous ethanol, manufacturer: Henan Tianguan. 4. Butanol, manufacturer: Henan Tianguan.

[0029] Equipment: 1. XQM-10A planetary ball mill, manufacturer: Changsha Tianchuang Powder. 2. SDMF300 muffle furnace, manufacturer: Hunan Sande Technology.

[0030] 1. Preparation of lithium manganate electrode material.

[0031] 1. Ball milling: Weigh 87g (1 mol) of electrolytic manganese dioxide (EDM), weigh lithium hydroxide monohydrate (LiOH·H 2 O) 21g (0.5mol), weigh 120ml of mixed alcohol (including 90ml ethanol and 30ml n-butanol). Pour EDM, lithium hydroxide monohydrate and mixed alcohol into the ball mill tank of the planetary ball mill, add zirconium beads, the ball-to-material ratio is about 4:1, seal and compact and ball mill at a speed of 150 r / min, and monitor duri...

Embodiment 2

[0043] The raw materials and equipment used in this example are the same as those in Example 1, and will not be repeated here. The main difference between this example and Example 1 is that the ratio of ethanol and n-butanol in the mixed alcohol used is slightly different. Similar to Example 1, the process of preparing lithium manganate electrode material in this example also includes the following steps:

[0044] 1. Ball milling: Weigh 87g (1 mol) of electrolytic manganese dioxide (EDM), weigh lithium hydroxide monohydrate (LiOH·H 2 O) 21g (0.5mol), weigh 120ml of mixed alcohol (including 96ml of ethanol and 24ml of n-butanol). Pour EDM, lithium hydroxide monohydrate and mixed alcohol into the ball mill tank of the planetary ball mill, add zirconium beads, the ball-to-material ratio is about 4:1, seal and compact and ball mill at a speed of 150 r / min, and monitor during the milling process Tank wall temperature, when the tank wall temperature reaches above 80°C, continue ba...

Embodiment 3

[0048] The raw materials used in this embodiment and equipment are identical with embodiment 1. The main difference between this example and Example 1 is that the ratio of ethanol and n-butanol in the mixed alcohol used is slightly different. The process of preparing lithium manganate electrode material in this embodiment also includes the following steps:

[0049] 1. Ball milling: Weigh 87g (1 mol) of electrolytic manganese dioxide (EDM), weigh lithium hydroxide monohydrate (LiOH·H 2 O) 21g (0.5mol), weigh 120ml of mixed alcohol (containing 100ml ethanol and 20ml n-butanol). Pour EDM, lithium hydroxide monohydrate and mixed alcohol into the ball mill tank of the planetary ball mill, add zirconium beads, the ball-to-material ratio is about 4:1, seal and compact and ball mill at a speed of 150 r / min, and monitor during the milling process Tank wall temperature, when the tank wall temperature reaches above 80°C, continue ball milling for 1 hour, during which the tank wall temp...

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Abstract

The invention discloses a method for preparing a lithium manganate electrode material based on EMD, the lithium manganate electrode material and application of the lithium manganate electrode material, and relates to the technical field of electrode material synthesis. The lithium manganate electrode material particle has the advantages of simple process steps, short reaction period, low energy consumption and low production cost, and is suitable for industrial implementation and application.

Description

technical field [0001] The invention relates to the technical field of electrode material synthesis, in particular to a method for preparing a lithium manganate electrode material based on EMD, the lithium manganate electrode material and applications thereof. Background technique [0002] The performance of a lithium-ion battery for power largely depends on the cathode material of the lithium-ion battery. Among the existing lithium-ion battery types, lithium manganese oxide batteries are easy to prepare, low in cost, and have broad market application prospects. Electrolytic manganese dioxide (EMD) is a key raw material for the production of lithium manganate batteries. The industry mainly adopts the high-temperature solid-state sintering method to produce lithium manganate batteries, that is, ordinary P-type EMD or alkaline EMD is directly mixed with lithium carbonate (Li 2 CO 3 ) mixed sintering and classification to obtain lithium manganate (LiMn 2 o 4 ), but the res...

Claims

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Application Information

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IPC IPC(8): C01G45/12H01M4/505H01M10/0525
CPCC01G45/1242H01M4/505H01M10/0525H01M2004/028C01P2002/32C01P2002/72C01P2006/40Y02E60/10
Inventor 娄晓明廖爽王兰曾菲官永清何佳佳李俐伶唐佳慧潘湘蓉王继承于正丽
Owner HUNAN INST OF TECH
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