COMPOSITE MICROSTRUCTURED CURRENT COLLECTOR FOR LITHIUM ION BATTERY AND FABRICATING METHOD THEREFOR

Disclosed are a composite microstructured current collector for a lithium ion battery and a fabricating method therefor. The composite microstructured current collector comprises a smooth bottom surface (9) and a top surface with a composite microstructure. The top surface comprises micro protrusion...

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Bibliographische Detailangaben
Hauptverfasser:	YUAN, Wei, PAN, Baoyou, QIU, Zhiqiang, HUANG, Shimin, LUO, Jian, TANG, Yong
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	Disclosed are a composite microstructured current collector for a lithium ion battery and a fabricating method therefor. The composite microstructured current collector comprises a smooth bottom surface (9) and a top surface with a composite microstructure. The top surface comprises micro protrusions (10) and grooves (11), and the micro protrusions (10) are surrounded by the grooves (11). The micro protrusions (10) are provided with concave holes, scaly burrs, and sunken structures. The fabricating method comprises the following steps: (1) design of a cutter and pretreatment of a copper sheet; and (2) processing of a surface microstructure by plowing.