A kind of composite metal lithium negative electrode and preparation method thereof
A composite metal and lithium negative electrode technology, applied in the direction of battery electrodes, structural parts, electrical components, etc., can solve the problems that do not have the significance and value of scale-up and practical application, the process is complex, and graphene oxide sheets cannot be continuously produced. The effect of solving the problem of lithium dendrite growth, uniform distribution, and alleviating the volume change of the negative electrode
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Embodiment 1
[0023] The polymer content in the composite metal lithium negative electrode is 2%, the nano-scale carbon material content is 25%, and the lithium metal content is 73%.
[0024] The composite metal lithium negative electrode is obtained by accumulative rolling method. The specific method is: using the cohesiveness of the polymer PTFE, rolling by the metal rolling method, and the deformation of the lower pressure is 10% to 50%, to obtain a three-dimensional rolling after one rolling Network polymer; the carbon material is spread on the surface of the three-dimensional network polymer, and then rolled, and the compression deformation is 20% to 50%, and the carbon is filled into the three-dimensional network structure to obtain a secondary structure filled with carbon; the metal Lithium is tiled on the surface of the secondary structure, and then rolled, with a deformation of 20% to 50% under pressure, a part of the metal lithium is embedded in the carbon material, and a part of t...
Embodiment 2
[0027] The polymer content in the composite metal lithium negative electrode is 10%, the nano-scale carbon material content is 50%, and the lithium metal content is 40%.
[0028] The composite metal lithium negative electrode was obtained by accumulative rolling method, and the specific method was the same as in Example 1.
Embodiment 3
[0030] The polymer content in the composite metal lithium negative electrode is 20%, the nano-scale carbon material content is 30%, and the lithium metal content is 50%.
[0031] The composite metal lithium negative electrode was obtained by accumulative rolling method, and the specific method was the same as in Example 1.
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