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Pole piece, battery and manufacturing method of pole piece

A manufacturing method and pole piece technology, which can be applied to battery electrodes, secondary batteries, battery pack components, etc., and can solve problems such as prone to lithium precipitation

Active Publication Date: 2021-04-09
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a pole piece, a battery and a pole piece manufacturing method to solve the problem that the existing lithium ion is prone to lithium precipitation during the charging process

Method used

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  • Pole piece, battery and manufacturing method of pole piece
  • Pole piece, battery and manufacturing method of pole piece
  • Pole piece, battery and manufacturing method of pole piece

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in quantity...

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Abstract

The invention provides a pole piece, a battery and a manufacturing method of the pole piece, and relates to the technical field of batteries. The pole piece comprises: a tab, a current collector, a first coating material and a second coating material, the current collector comprises a first area and a second area, the tab is arranged on the current collector and electrically connected with the current collector, a first coating is arranged on the first area, and a second coating is arranged on the second area; the first coating comprises the first coating material, and the second coating comprises the second coating material; the first area is close to the tab and the second area is away from the tab; the first coating material comprises first graphite, the second coating material comprises second graphite, and the Raman spectrum peak value of the first graphite is larger than that of the second graphite. According to the technical scheme provided by the invention, the problem that existing lithium ions are easy to separate out lithium in the charging process is solved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a pole piece, a battery and a method for making the pole piece. Background technique [0002] Because lithium-ion batteries have the advantage of high energy density, lithium-ion batteries are widely used. However, the potential distribution of different positions of lithium-ion negative plates is different, and the problem of lithium precipitation is prone to occur during charging. Contents of the invention [0003] Embodiments of the present invention provide a pole piece, a battery and a method for making the pole piece, so as to solve the existing problem that lithium ions are prone to lithium precipitation during charging. [0004] In a first aspect, an embodiment of the present invention provides a pole piece, including: a tab, a current collector, a first coating material, and a second coating material, the current collector includes a first region and a second region,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1393H01M10/0525H01M50/531
CPCH01M4/1393H01M10/0525H01M2004/027Y02E60/10
Inventor 胡典洋彭冲
Owner ZHUHAI COSMX BATTERY CO LTD
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