Current collector structure, lithium battery cell and lithium battery comprising same

A technology for lithium batteries and current collectors, applied in battery electrodes, secondary batteries, structural parts, etc., can solve the problems of large-scale preparation and promotion of low-cost all-solid-state lithium batteries, and achieve increased hardness, prevention of short circuits, and improved performance. The effect of flatness

Pending Publication Date: 2019-06-25
成都大超科技有限公司
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  • Abstract
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Problems solved by technology

[0006] In order to overcome the existing problem that the large-scale preparation and popularization of low-cost all-solid-state lithi

Method used

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  • Current collector structure, lithium battery cell and lithium battery comprising same
  • Current collector structure, lithium battery cell and lithium battery comprising same
  • Current collector structure, lithium battery cell and lithium battery comprising same

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[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] see figure 1 , the first embodiment of the present invention provides a current collector structure 100, the current collector structure 100 includes a current collector 101, the current collector 101 includes two opposite main surfaces 109, and one of the main surfaces 109 forms a columnar The crystal positive electrode layer 102 serves as the positive electrode structure of a lithium battery cell, and the negative electrode layer 103 is formed on the other main surface 109 to serve as the negative electrode structure of another lithium battery cell.

[0036] In this and a...

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Abstract

The invention relates to the field of lithium batteries, in particular to a current collector structure, a lithium battery cell and a lithium battery comprising the same. The current collector comprises two opposite main surfaces. A columnar crystal positive electrode layer is formed on one main surface to be used as a positive electrode structure of a lithium battery cell. The lithium battery cell and the lithium battery provided by the invention can be used to realize series or parallel connection of multiple lithium battery cells. By setting positive and negative electrodes on the two sidesof current collectors to form current collectors with shared positive and negative electrodes, multiple lithium battery cells can be prepared by lamination, and large-scale preparation and promotionof a low-cost all-solid lithium battery can be realized. Moreover, the current collector can be directly used as the electrodes of the lithium battery, and thus, the packaging structure of the lithiumbattery is simplified.

Description

【Technical field】 [0001] The invention relates to the field of lithium batteries, in particular to a current collector structure, a lithium battery cell and the lithium battery. 【Background technique】 [0002] All-solid-state lithium batteries have become an important development direction of secondary batteries due to their safety and excellent cycle performance. At the same time, due to the small atomic radius of metal lithium and the lowest electrochemical potential, all-solid-state lithium batteries It has greater market application potential. [0003] At present, the energy density of the lithium battery cell material system can only reach 250-300Wh / kg. The essential problem is the limitation of battery electrode materials. Specifically, the negative electrode material uses graphite or C-Si negative electrode, and the positive electrode uses lithium iron phosphate, ternary materials and lithium cobalt oxide to cause the above results. [0004] The existing solid-state...

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Application Information

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IPC IPC(8): H01M10/0525H01M10/0585H01M4/131H01M4/133H01M4/134H01M10/0562H01M10/42
CPCY02E60/10Y02P70/50
Inventor 张晓琨
Owner 成都大超科技有限公司
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