Method for preparing water-based super-nano lithium iron phosphate battery

A lithium iron phosphate battery, lithium iron phosphate technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problem of no improvement in low temperature resistance, and achieve the effects of improved bonding fastness, excellent low temperature, and low resistance
CN109921098AActive Publication Date: 2019-06-21WANXIANG 123 CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WANXIANG 123 CO LTD
Publication Date
2019-06-21

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Abstract

The invention relates to the field of preparation of lithium batteries, and in particular to a method for preparing a water-based super-nano lithium iron phosphate battery. The lithium iron phosphatebattery provided by the invention is prepared from the following steps: firstly preparing positive and negative electrode slurry, respectively coating the obtained positive and negative electrode slurry on the surface of an aluminum foil to obtain positive and negative pole pieces, and laminating the positive and negative pole pieces, then placing the same in a battery shell, injecting electrolyte, and finally completing formation and volume separation steps to obtain the lithium iron phosphate battery. By adoption of the method provided by the invention, the problem of poor performance at lowtemperature of the lithium iron phosphate battery in the prior art is overcome, and the lithium iron phosphate battery has the advantages of good low temperature resistance, high energy density, better safety performance and smaller resistance.
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Description

technical field

[0001] The invention relates to the field of lithium battery preparation, in particular to a method for preparing a water-based super nanometer lithium iron phosphate battery. Background technique

[0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. In 1912, the lithium metal battery was first proposed and studied by Gilbert N. Lewis. In the 1970s, M.S.Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become the mainstream now.

[0003] The lithium iron phosphate / graphite system is now a relatively common system in the new generation of lithium-ion secondary batteries. Because iron and phosphorus, the main ele...

Claims

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