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Clean and simple preparation method of tin oxide surface modified lithium manganite and modified lithium manganite positive electrode material prepared by clean and simple preparation method

A technology of lithium manganate and cathode material, applied in the field of modified lithium manganate cathode material, can solve the problems of difficult large-scale industrialization, high energy consumption, complex process, etc. simple craftsmanship

Active Publication Date: 2016-05-11
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing process is complex, energy consumption is large, the cost is too high, and it is difficult to large-scale industrialization

Method used

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  • Clean and simple preparation method of tin oxide surface modified lithium manganite and modified lithium manganite positive electrode material prepared by clean and simple preparation method
  • Clean and simple preparation method of tin oxide surface modified lithium manganite and modified lithium manganite positive electrode material prepared by clean and simple preparation method

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Experimental program
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Effect test

Embodiment 1

[0025] Dissolve 0.2283 g of stannous chloride in 150 mL of deionized water, disperse by ultrasonic for 30 minutes, add 7.9930 g of lithium manganate with a particle size of 5 μm after uniform dispersion, stir vigorously for 8 hours, filter and dry to obtain surface-modified manganese Lithium oxide material. The drying is completed in an oven, the baking temperature is 100°C, and the baking time is 360 minutes.

Embodiment 2

[0027] Dissolve 0.2283 g of stannous chloride in 150 mL of ethanol, ultrasonically disperse for 30 minutes, add 7.9930 g of lithium manganate after uniform dispersion, stir vigorously for 8 hours, filter and dry to obtain surface-modified lithium manganate Material. The drying is completed in an oven, the baking temperature is 120° C., and the baking time is 320 minutes.

Embodiment 3

[0029] Dissolve 0.2283 g of stannous chloride in 150 mL of acetic acid, ultrasonically disperse for 30 minutes, add 7.9930 g of lithium manganate after uniform dispersion, stir vigorously for 8 hours, filter and dry to obtain surface-modified lithium manganate Material.

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Abstract

The invention relates to a positive electrode material of a lithium ion battery and particularly relates to a clean and simple preparation method of tin oxide surface modified lithium manganite and a modified lithium manganite positive electrode material prepared by the clean and simple preparation method. The clean and simple preparation method of the tin oxide surface modified lithium manganite comprises the following steps: (1) uniformly dispersing tin salt by adopting a dispersion medium; (2) uniformly dispersing the lithium manganite by adopting a dispersion medium; (3) mixing the dispersed tin salt and lithium manganite, and reacting by stirring in the air; and (4) separating and drying the mixture obtained by the step (3) to obtain the modified lithium manganite positive electrode material. The lithium manganite positive electrode material is produced through hydrolyzing a tin source and oxidizing in the air; and the clean and simple preparation method has the advantages of simple procedures, low cost, environmental friendliness and no environmental pollution and easiness of realizing large-scale production.

Description

technical field [0001] The invention relates to a positive electrode material for lithium ion batteries, in particular to a clean and simple preparation method of tin oxide surface-modified lithium manganate and the obtained modified lithium manganate positive electrode material. Background technique [0002] Liu Tao et al. used metal tin as raw material to synthesize Sn(OCH) by electrolytic method. 2 CH 2 OCH 3 ) 4 The precursor, and then the sol-gel method was used to prepare tin oxide surface-modified lithium manganate; Shaohua Guo et al. calcined the synthesized spherical lithium carbonate as a precursor to obtain spherical manganese trioxide, which was then mixed with tin dioxide and lithium carbonate. After calcination, tin dioxide surface-modified lithium manganate is obtained. The existing process is complicated, the energy consumption is large, the cost is too high, and it is difficult to large-scale industrialization. SUMMARY OF THE INVENTION [0003] The in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/525H01M10/0525
CPCH01M4/366H01M4/483H01M4/525H01M10/0525Y02E60/10
Inventor 柯克吴小敏李少刚赵峰刘志彬
Owner CHAOWEI POWER CO LTD
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