Lithium battery and forming method therefor

A lithium battery and lithium transition metal technology, applied in secondary batteries, battery electrodes, non-aqueous electrolyte storage batteries, etc., can solve problems such as inability to effectively suppress deoxidation, battery explosion, and no thermal actuation safety mechanism, etc., to achieve discharge Effects of less heat, improved safety, and improved capacitance

Active Publication Date: 2014-06-18
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the protective film formed by the introduction of metal oxide or metal fluoride on the surface of the electrode material itself does not have a thermal safety mechanism, and it cannot effectively inhibit the deoxidation phenomenon. For internal short circuits caused by external environmental factors, such as accidental puncture or external impact damage, the risk of battery explosion caused by instantaneous high heat has not been effectively reduced

Method used

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  • Lithium battery and forming method therefor
  • Lithium battery and forming method therefor
  • Lithium battery and forming method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Soak the positive plate of Comparative Example 2 into a 10mM Prussian blue aqueous solution, and stir and mix at room temperature for about 3 days to allow the Prussian blue to modify LiNi through the holes of the positive plate. 4 co 2 mn 4 o 2 powder surface.

[0049] As for the negative electrode plate, the separator, the composition of the electrolyte, and the size of the battery formed by packaging, they are all the same as those of Comparative Example 1. In other words, the difference between Example 1 and Comparative Example 1 is that LiNi 4 co 2 mn 4 o 2 The surface of the powder is modified with nitrogen-containing polymer and Prussian blue.

[0050] The charge-discharge curve of the lithium battery of embodiment 1 at the charge-discharge voltage of 4.3V to 3.0V and the charge-discharge current density of 0.1C / 0.1C is as follows Figure 2A As shown, the charge-discharge curve of the charge-discharge voltage from 4.3V to 3.0V and the charge-discharge cur...

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Abstract

The invention provides a lithium battery. The lithium battery comprises a positive pole plate, a negative pole plate, an isolating membrane arranged between the positive pole plate and the negative pole plate for defining a holding region, and an electrolyte solution located in the holding region. The positive pole plate is a mixture of lithium transition metal oxides, binders and conducting particles. The surfaces of the lithium transition metal oxides are modified with nitrogen-containing macromolecules and transition-metal-containing cyano complexes. The invention relates to a forming method for the lithium battery.

Description

technical field [0001] The present invention relates to a secondary lithium ion battery, and particularly relates to the composition of its positive plate. Background technique [0002] Since the primary battery does not meet the requirements of environmental protection, rechargeable secondary battery systems have gradually attracted attention in recent years. With the rapid development and popularization of portable electronic products, the market demand for lithium-ion secondary batteries is increasing day by day due to the characteristics of light weight, high voltage value and high energy density. Compared with nickel-hydrogen, nickel-zinc, and nickel-cadmium batteries, lithium-ion secondary batteries have the advantages of high working voltage, high energy density, light weight, long life and good environmental protection, and are also the best choice for flexible batteries in the future. choose. [0003] The application of lithium-ion secondary batteries in 3C produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M4/13H01M4/131H01M10/058
CPCY02E60/122H01M4/131H01M10/0525H01M10/058H01M10/4235Y02E60/10Y02P70/50
Inventor 陈振崇杨长荣邱国峰陈正伦吕晃志
Owner IND TECH RES INST
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