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Lithium battery cell, lithium battery and preparation method thereof

A lithium battery and cell technology, applied in battery electrodes, electrode manufacturing, secondary batteries, etc., can solve problems such as poor rate characteristics of lithium batteries, and achieve the effects of improving utilization, improving efficiency, and simplifying packaging structure

Pending Publication Date: 2018-08-03
成都大超科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to overcome the problem of poor rate characteristics of existing lithium batteries, the invention provides a lithium battery cell, a lithium battery and a preparation method thereof

Method used

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  • Lithium battery cell, lithium battery and preparation method thereof
  • Lithium battery cell, lithium battery and preparation method thereof
  • Lithium battery cell, lithium battery and preparation method thereof

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Embodiment Construction

[0043] 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.

[0044] see figure 1 , in the first embodiment of the present invention, a current collector structure 100 is provided, the current collector structure 100 includes a current collector 101, the current collector 101 includes two opposite main surfaces 109, one of the main surfaces 109 The positive electrode layer 102 is formed to serve 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.

[0045] In the present inventio...

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Abstract

The invention relates to the field of a lithium battery, specifically a lithium battery cell, a lithium battery and a preparation method thereof. A current collector comprises a front positive surfaceand a negative electrode surface which are arranged oppositely, wherein a lithium oxide-containing columnar crystal positive electrode layer is formed on the positive electrode surface to be used asthe positive electrode structure of the lithium battery cell; a lithium silicon carbon composite negative electrode layer is formed on the negative electrode layer; by taking the lithium oxide-containing columnar crystal with high voltage and high capacity characteristics as the positive electrode material, the high capacity density lithium battery cell and lithium battery can be obtained; by setting positive and negative electrodes of two different lithium battery cell units on the two surfaces of the current collector, the current collectors with shared positive and negative electrodes are formed, so that stacking preparation of multiple lithium battery cell units can be realized, thereby realizing preparation of the high capacity lithium battery; and the current collector also can be directly used as an external electrode of the lithium battery, so that the packaging structure of the lithium battery can be simplified.

Description

【Technical field】 [0001] The invention relates to the field of lithium batteries, in particular to a lithium battery cell, a lithium battery and a preparation method thereof. 【Background technique】 [0002] Lithium batteries have become an important development direction for 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, lithium batteries have greater power than other sodium-ion batteries. market application potential. [0003] The three core factors affecting the performance of lithium batteries are safety, specific capacity and high rate characteristics. In the prior art, the lithium battery cell material system adopts the most mature graphite negative electrode, and its theoretical capacity is only 270mAh / g, while the positive electrode material is lithium iron phosphate, ternary materials and lithium cobalt oxide materials with low specif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M10/0585H01M4/131H01M4/134H01M4/136H01M4/1391H01M4/1395H01M4/1397H01M4/04H01M2/16H01M50/46
CPCH01M4/0404H01M4/0423H01M4/0426H01M4/043H01M4/131H01M4/134H01M4/136H01M4/1391H01M4/1395H01M4/1397H01M10/0525H01M10/0585H01M50/46Y02E60/10Y02P70/50
Inventor 张晓琨
Owner 成都大超科技有限公司
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