COMPOSITE MATERIAL, METHOD FOR PRODUCING THE SAME, AND NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES

To provide a composite material that can be used as an anode material for lithium-ion secondary batteries.SOLUTION: A composite material comprising a carbonaceous material and a metal oxide layer covering the surface of the carbonaceous material, wherein the surface of the carbonaceous material is c...

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Bibliographische Detailangaben
Hauptverfasser:	BACK JIN SOK, KONO DAISUKE, INOUE HIROFUMI, TONEGAWA AKIO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS THEREOF ELECTRICITY INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	To provide a composite material that can be used as an anode material for lithium-ion secondary batteries.SOLUTION: A composite material comprising a carbonaceous material and a metal oxide layer covering the surface of the carbonaceous material, wherein the surface of the carbonaceous material is coated with the metal oxide layer scattered like islands on the surface of the material and have a sea-island like structure, and wherein the area of the carbonaceous material covered with the metal oxide layer is 20 to 80%.SELECTED DRAWING: None 【課題】リチウムイオン二次電池の負極材として利用可能な複合材料の提供。【解決手段】炭素性材料と、前記炭素性材料の表面を被覆する金属酸化物層とを含む複合材料であって、前記金属酸化物層が前記炭素性材料の表面を島状に点在する海島構造で被覆し、かつ前記金属酸化物層による前記炭素性材料の被覆率が２０％以上８０％以下であることを特徴とする複合材料。【選択図】なし