Lithium metal battery, electrode plate for same and method for preparing electrode plate

A lithium metal battery and metal lithium sheet technology, which is applied to battery electrodes, non-aqueous electrolyte battery electrodes, secondary batteries, etc., can solve the problem of increasing the contact between the positive and negative electrodes of lithium batteries, poor thermal deformation resistance of the diaphragm, and local charge distribution Inequalities, to achieve the effect of alleviating volume changes, good wettability, and inhibiting dendrite growth
CN108899472AActive Publication Date: 2018-11-27UNIV OF SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Publication Date
2018-11-27

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Abstract

The invention provides a negative electrode plate for a lithium metal battery. Metallic lithium plates and sponges are compressed to obtain the negative electrode plate. The negative electrode plate has the advantages that the traditional lithium metal battery structures can be simplified when the negative electrode plate is applied to the lithium metal battery, electron barrier effects can be realized by sponge elastic interface layers instead of diaphragms, and volume change and the instability of interfaces inside the battery can be relieved by elastic interface materials in battery cycle;sponge medium layers are excellent in electrolyte solution wettability, and are high in thermal deformation resistance as compared with common polypropylene diaphragms; elastic three-dimensional framework structures of the sponges are favorable for inhibiting dendrite growth in lithium metal battery cycle procedures and relieving the volume change of negative electrodes, and accordingly further development of the lithium metal battery can be promoted from another angle by composite metal lithium negative electrodes which are designed by the aid of sponge materials and are free of diaphragm structures.
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Description

technical field

[0001] The invention belongs to the technical field of lithium metal batteries, and in particular relates to an electrode sheet for a lithium metal battery, a preparation method thereof, and a lithium metal battery. Background technique

[0002] On the one hand, due to the current highest theoretical capacity (3860mA h g -1 ), the lowest electrochemical potential (-3.04V), lower density (0.534g cm -3 ) and other advantages, the metal lithium anode is considered to be the development direction of the next generation energy storage system. On the other hand, with the development of next-generation high-energy battery systems, such as the research and development of lithium-air batteries and lithium-sulfur batteries, the application research of lithium metal batteries has also highlighted its importance. However, due to the high activity of lithium metal itself and the unsolved problems of lithium dendrites, its safety and cyclability limit commercial applicat...

Claims

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