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A kind of electrode active material and its preparation method and application

An electrode active material and electrode technology, applied in electrode manufacturing, negative electrodes, battery electrodes, etc., can solve problems such as poor low-temperature performance and restrict the application of water-based batteries, achieve good low-temperature performance, improve electronic conductivity and structural stability, Excellent cycle performance

Active Publication Date: 2021-07-27
NINGBO FENGCHENG NANOTECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nevertheless, the existing aqueous batteries generally have the disadvantage of poor low temperature performance, which greatly restricts the application of aqueous batteries in northern my country and other extremely cold environments.
[0003] At present, there are relatively few reports on water-based low-temperature batteries, and the low-temperature performance of batteries is mainly tested by changing the composition of the electrolyte, while there are many reports on organic low-temperature batteries.

Method used

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  • A kind of electrode active material and its preparation method and application
  • A kind of electrode active material and its preparation method and application
  • A kind of electrode active material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] The preparation of embodiment 1 electrode active material

[0109] see figure 2 , the preparation method of electrode active material, specifically comprises:

[0110] Step A: Mix lithium carbonate, titanium dioxide and ammonium dihydrogen phosphate according to a molar ratio of 1:4:6 to obtain a mixture, and then add nanoscale silicon dioxide and glucose to the mixture, wherein the mass of nanoscale silicon dioxide It is 1% of the total mass of the three substances of lithium carbonate, titanium dioxide and ammonium dihydrogen phosphate, and the quality of glucose is 5% of the total mass of the three substances of lithium carbonate, titanium dioxide and ammonium dihydrogen phosphate, and then add deionized Water, wherein the quality of deionized water is 1 times the total mass of lithium carbonate, titanium dioxide, ammonium dihydrogen phosphate, nano-silica and glucose to obtain a mixed material, which is added to a ball mill and ball milled for 2 hours at a speed o...

Embodiment 2

[0116] The preparation method is the same as in Example 1, except that the polyimide material provided in Example II is used in Step D, and the obtained material is designated as Sample 2.

Embodiment 3

[0118] The preparation method is the same as in Example 1, except that the polyimide material provided in Example III is used in Step D, and the obtained material is designated as Sample 3.

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Abstract

The application discloses an electrode active material and its preparation method and application. The preparation method of the electrode active material includes: ball milling and sintering a mixed solution containing a lithium source, a titanium source, a phosphorus source, a silicon source and a carbon source I, obtaining material I; mixing said material I with a polyimide material and sintering II to obtain an electrode active material. When the material prepared by the method is used in an aqueous lithium-ion battery, the charge-discharge capacity and cycle performance of the battery are good at -10°C.

Description

technical field [0001] The application relates to an electrode active material and its preparation method and application, belonging to the field of aqueous lithium-ion batteries. Background technique [0002] The rapid development of lithium-ion batteries in recent years has promoted the rise of new energy vehicles and laid a solid foundation for the storage, conversion and utilization of renewable energy. But at the same time, traditional lithium-ion batteries use carbonate-based organic electrolytes, which have potential safety hazards such as combustion and explosion. Therefore, water-based ion batteries with more safety advantages have sprung up and been developed by researchers at home and abroad. Nevertheless, the existing aqueous batteries generally have the disadvantage of poor low-temperature performance, which greatly restricts the application of aqueous batteries in northern my country and other extremely cold environments. [0003] At present, there are relati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M4/04H01M10/36
CPCH01M4/0404H01M4/366H01M4/5825H01M4/62H01M4/625H01M10/36H01M2004/021H01M2004/027Y02E60/10
Inventor 李书顶吴志连李忆非张旭锋王耀国
Owner NINGBO FENGCHENG NANOTECHNOLOGY CO LTD