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Technology of preparing lithium ion electrode material by Ce and WO3 modification

An electrode material, lithium-ion technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of limited lithium-ion movement space and low conductivity, and achieve the effect of simple preparation process and short process

Inactive Publication Date: 2018-06-29
郑观情
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the a-c plane where lithium atoms are located, PO 4 Tetrahedral, which restricts the space for lithium ions to move, so its conductivity is lower than other layered compounds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First chemically pure FeC 2 o 4 ・2H 2 O , Li 2 CO 3 , NH 4 h 2 PO 4 、WO 3 and metal Ce powder as raw material, according to Li 0.99 Fe 0.9 W 0.1 Ce 0.01 PO 4 The atomic ratio of ingredients is 5g of the mixture, the prepared mixture is poured into the acetone solution together, cleaned and filtered, and the raw material mixture collected by filtration is poured into the ball mill together, and 3g of sucrose and 100g of steel balls are added , and then pour acetone solution, after immersing the ball mill tank, cover the tank tightly, put it into a planetary ball mill for ball milling, set the ball milling speed to 250 r / min, after 40 hours of ball milling, take out the alloy powder and put it in a flat container Dry it, then put the dried powder into the quartz glass tube, vacuum seal it under the condition of continuous pumping, put the sealed quartz glass tube into the water to verify the air tightness, if there is no air bubble, it can be considered sealed...

Embodiment 2

[0025] First chemically pure FeC 2 o 4 ・2H 2 O , Li 2 CO 3 , NH 4 h 2 PO 4 、WO 3 and metal Ce powder as raw material, according to Li 0.95 Fe 0.9 W 0.1 Ce 0.05 PO 4 10g of the mixture according to the atomic ratio, pour the mixed raw materials together into the acetone solution, wash and filter, pour the raw material mixture collected by filtration into the ball mill jar together, and add 4g of sucrose and 150g of steel balls , then pour acetone solution, after immersing the ball mill tank, cover the tank tightly, put it into a planetary ball mill for ball milling, set the ball milling speed to 300 r / min, after 30 hours of ball milling, take out the alloy powder and put it in a flat container Dry it, then put the dried powder into the quartz glass tube, vacuum seal it under the condition of continuous pumping, put the sealed quartz glass tube into the water to verify the air tightness, if there is no air bubble, it can be considered sealed If the properties are go...

Embodiment 3

[0027] First chemically pure FeC 2 o 4 ・2H 2 O , Li 2 CO 3 , NH 4 h 2 PO 4 、WO 3 and metal Ce powder as raw material, according to Li 0.9 Fe 0.9 W 0.1 Ce 0.1 PO 4 20g of the mixture in the atomic proportion, pour the mixed raw materials together into the acetone solution, wash and filter, pour the raw material mixture collected by filtration into the ball mill jar together, and add 5g of sucrose and 300g of steel balls , and then pour acetone solution, after immersing the ball milling tank, cover the tank tightly, put it into a planetary ball mill for ball milling, set the ball milling speed to 350 r / min, after ball milling for 20 hours, take out the alloy powder and put it in a flat container Dry it, then put the dried powder into the quartz glass tube, vacuum seal it under the condition of continuous pumping, put the sealed quartz glass tube into the water to verify the air tightness, if there is no air bubble, it can be considered sealed If the properties are g...

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PUM

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Abstract

The invention discloses a technology of preparing a lithium ion electrode material by Ce and WO3 modification. The technology comprises the steps of mixing Li2CO3, FeC2O4-2H2O, NH4H2PO4, WO3 and Ce asraw materials according to according to a certain proportion, cleaning the raw materials with an acetone solution, filling a mixture into a ball milling jar, adding an appropriate amount of sucrose and steel balls, performing ball milling under the protection of acetone liquid sealing, airing powder after the ball milling, performing vacuum sealing, putting at high temperature for calcining, andobtaining the lithium ion electrode material after a calcining reaction.

Description

technical field [0001] The invention relates to a lithium ion electrode material and a preparation process thereof, in particular to a positive electrode material added with Ce and W elements and a preparation method thereof, belonging to the field of battery electrode materials. Background technique [0002] As the global energy issue becomes increasingly tense, the search for clean, environmentally friendly, and non-polluting renewable materials has become the focus of chemical power sources. Lithium battery is a kind of battery that uses lithium metal or lithium alloy as negative electrode material and uses non-aqueous electrolyte solution. Lithium-ion batteries are widely used in portable appliances and new vehicles due to their advantages such as high specific energy, high working voltage, long cycle life, no memory effect, and no pollution. [0003] The earliest lithium battery used the following reaction: Li+MnO2=LiMnO2, which is a redox reaction and discharged. Due...

Claims

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Application Information

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IPC IPC(8): H01M4/36
CPCH01M4/364Y02E60/10
Inventor 郑观情
Owner 郑观情
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