ELECTROLYTIC COPPER FOIL, ELECTRODE HAVING THE SAME, AND LITHIUM ION BATTERY HAVING THE SAME

To provide electrolytic copper foil for an electrode of a lithium-ion battery, which has good mechanical properties, reduces cracks during processing, and improves the production yield.SOLUTION: Electrolytic copper foil 70 includes a drum surface 701 and a deposition surface 702 opposite to the drum...

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Hauptverfasser:	LAI YAO-SHENG, SHU ZUISHO, HUANG JIAN MING, CHENG KUEI-SEN
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	APPARATUS THEREFOR BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	To provide electrolytic copper foil for an electrode of a lithium-ion battery, which has good mechanical properties, reduces cracks during processing, and improves the production yield.SOLUTION: Electrolytic copper foil 70 includes a drum surface 701 and a deposition surface 702 opposite to the drum surface, has a nanoindentation hardness of the drum surface of 0.5 GPa or more and 3.5 GPa or less, and a brightness of the drum surface of 25 or more and 75 or less.SELECTED DRAWING: Figure 1 【課題】リチウムイオン電池の電極用電解銅箔として、良好な機械的特性を有し、加工時の割れを低減して製造歩留まりを向上させる電解銅箔を提供する。【解決手段】電解銅箔７０は、ドラム面７０１と、ドラム面とは反対側の析出面７０２とを備え、ドラム面のナノインデンテーション硬度は０．５ＧＰａ以上３．５ＧＰａ以下であり、ドラム面の明度は２５以上７５以下である。【選択図】図１