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Sodium-lithium battery

A battery and sodium salt technology, applied in the field of sodium-lithium batteries, can solve the problems of high temperature resistance and poor safety of lithium batteries, and achieve the effects of high temperature resistance, high safety, and high temperature stability

Pending Publication Date: 2021-12-31
深圳市超壹新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, lithium batteries still have problems such as low temperature resistance and poor safety. There are often reports about spontaneous combustion of lithium-ion battery vehicles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: Na-lithium battery

[0057] 1. Composition of Na-Li battery

[0058] The high-power sodium-lithium battery consists of a positive electrode, a negative electrode, a separator, an electrolyte, and a flexible package. It is a soft-packed square battery; calculated based on the total mass of the positive electrode, the positive electrode is composed of 92wt% nickel-cobalt sodium manganate and nickel-cobalt lithium manganate mixture, 4wt % of conductive graphite and 4wt% PVDF, the mass ratio of sodium nickel cobalt manganate and lithium nickel cobalt manganate in the mixture of sodium nickel cobalt manganate and lithium nickel cobalt manganate is 51:49, and the negative pole is 95wt% hard carbon Composed of 2wt% conductive graphite and 3wt% PVDF, the diaphragm is PE with a thickness of 25 microns, the capacity is 800Ah, and the maximum power is 30kW.

[0059] The electrolyte is composed of solvent, sodium salt, lithium salt and additives. Based on the total ...

Embodiment 2

[0065] Embodiment 2: Na-lithium battery

[0066] 1. Composition of Na-Li battery

[0067] The high-power sodium-lithium battery consists of a positive electrode, a negative electrode, a separator, an electrolyte, and a flexible package. It is a soft-packed square battery; calculated based on the total mass of the positive electrode, the positive electrode is composed of 92wt% nickel-cobalt sodium manganate and nickel-cobalt lithium manganate mixture, 4wt % of conductive graphite and 4wt% PVDF, the mass ratio of nickel-cobalt-sodium manganate and nickel-cobalt-lithium manganate in the mixture of nickel-cobalt-manganate-sodium-nickel-cobalt-manganate and nickel-cobalt-lithium-manganate-lithium is 75:25, and the negative pole is 95wt% hard carbon It is composed of 2wt% conductive graphite and 3wt% PVDF; the negative electrode is hard carbon, the separator is PE with a thickness of 25 microns, and the capacity is 600Ah.

[0068] The electrolyte is composed of solvent, sodium lith...

Embodiment 3

[0073] Embodiment 3: Na-lithium battery

[0074] 1. The composition of sodium-lithium battery

[0075] The high-power sodium-lithium battery consists of a positive electrode, a negative electrode, a separator, an electrolyte, and a flexible package. It is a soft-packed square battery; calculated based on the total mass of the positive electrode, the positive electrode is composed of 92wt% nickel-cobalt-manganese-aluminate and nickel-cobalt-lithium manganate mixture. Composed of 4wt% conductive graphite and 4wt% PVDF, the mass ratio of nickel-cobalt-manganese-aluminate sodium and nickel-cobalt-lithium manganate in the mixture of nickel-cobalt-manganese-aluminate and nickel-cobalt-lithium manganate is 75:25, and the negative pole is 95wt % hard carbon and 2wt% conductive graphite and 3wt% PVDF, the diaphragm is PE with a thickness of 25 microns, and the capacity is 600Ah.

[0076] The electrolyte is composed of solvent, sodium lithium salt and additives. Based on the total mas...

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Abstract

The invention provides a battery which comprises a positive electrode, a negative electrode, an electrolyte and a diaphragm, wherein the positive electrode comprises a positive electrode active material, a conductive agent A and a binder I, and the positive electrode active material comprises a sodium-containing compound and a lithium-containing compound. The battery has the advantages of high capacity, high power, good high-temperature stability and the like, and has a huge market prospect.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a sodium-lithium battery. Background technique [0002] Lithium-ion battery is a secondary battery that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. Lithium-ion batteries have high energy density, high average output voltage, wide operating temperature range, excellent cycle performance, high output power, long service life, and no toxic and harmful substances. They are widely used as power sources for new energy vehicles. [0003] However, lithium batteries still have problems such as low temperature resistance and poor safety. There are often reports of spontaneous combustion of lithium-ion battery vehicles. [0004] Therefore, there is still an urgent need for a battery with high temperature resistance, good stability, good safety and high power. Contents of the invention [0005] To solve the above probl...

Claims

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Application Information

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IPC IPC(8): H01M10/0525
CPCH01M10/0525Y02E60/10
Inventor 吴明辉肖光明
Owner 深圳市超壹新能源科技有限公司
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