Graphite paper current collector, negative electrode and preparation method

user-607cde9d4c775e0497f57189(2020)

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摘要
The invention discloses a graphite paper negative electrode, a graphite paper current collector and a preparation method thereof, and belongs to the field of lithium ion material manufacturing. The graphite paper current collector comprises a first surface and a second surface which are oppositely arranged; wherein the second surface is a surface acting with the active substance, the first surfaceis used for being connected with an external circuit, a plurality of holes are formed in the second surface, and the plurality of holes do not penetrate through the first surface. In addition, the invention also provides a preparation method of the current collector and a graphite paper negative electrode. The lithium ion battery half-cell assembled by the current collector provided by the invention has excellent cycling stability, also has good rate capability, and has excellent charging and discharging performance under large current. Compared with a copper foil and aluminum foil current collector used at present, under the condition of the same capacity, the mass of the whole electrode is greatly reduced, and the mass specific capacity can be improved by 100-200%.
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关键词
Lithium-ion battery,Current collector,Electrode,Graphite,Current (fluid),Lithium,Ion,Composite material,Materials science,Preparation method
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