Lithium ion battery positive electrode plate added with lithium peroxide, and preparation method thereof

A lithium-ion battery, lithium peroxide technology, applied in electrode manufacturing, battery electrodes, secondary batteries, etc., can solve problems such as large consumption of positive lithium ions, irreversible capacity loss, aggravation of irreversible capacity, etc., to make up for consumption and increase capacity. Effect
CN109659533AInactive Publication Date: 2019-04-19SUZHOU YOULION BATTERY INC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SUZHOU YOULION BATTERY INC
Publication Date
2019-04-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a lithium ion battery positive electrode plate added with lithium peroxide. The lithium ion battery positive electrode plate comprises the following components by weight: 70-80%of lithium peroxide, 10-15% of conductive additive, and 10-15% of binder. The invention further provides another lithium ion battery positive electrode plate added with lithium peroxide. The lithiumion battery positive electrode plate is characterized by comprising the following components by weight: 70-80% of composite positive electrode material, 10-15% of conductive additive, and 10-15% of binder, wherein the composite positive electrode material comprises a positive electrode material and lithium peroxide, and the weight percentage between the positive electrode material and the lithiumperoxide is: 90-99% of the positive electrode material, and 1-10% of lithium peroxide. The invention further provides a preparation method of the lithium ion battery positive electrode plate added with lithium peroxide. Compared with the prior art, the lithium ion battery positive electrode plate can effectively compensate for the consumption of lithium ions of the positive electrode material andincrease the capacity of the battery.
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Description

technical field

[0001] The invention relates to the field of lithium ion batteries, in particular to a lithium ion battery positive plate added with lithium peroxide and a preparation method thereof. Background technique

[0002] Since the first lithium-ion battery appeared in 1970, lithium-ion batteries have been favored by researchers at home and abroad. Among them, the cathode material is an important part of the lithium-ion battery, and the lithium in the current lithium-ion battery is mainly derived from this cathode material.

[0003] However, during the first charging process, the SEI film formed on the side of the negative electrode will consume a large amount of positive lithium ions, resulting in a loss of irreversible capacity, and if the material used for the negative electrode is higher capacity silicon If the negative electrode is used, it will aggravate the loss of irreversible capacity. Contents of the invention

[0004] In view of this, the present inven...

Claims

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