ACTIVE MATERIAL, ELECTRODE COMPRISING THE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING THE SAME, AND SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide an electricity storage device such as a secondary battery showing excellent cycle characteristics even if a fluorine-containing electrolyte, such as an electrolyte in which LiPFis dissolved, is used by forming an active material layer with silicon.SOLUTION: An electr...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ICHIJO MITSUHIRO, ENDO TOSHIYA, KURISHIRO KAZUKI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an electricity storage device such as a secondary battery showing excellent cycle characteristics even if a fluorine-containing electrolyte, such as an electrolyte in which LiPFis dissolved, is used by forming an active material layer with silicon.SOLUTION: An electricity storage device comprises an electrode comprising a silicon layer on a collector, and a membrane layer on the surface of the silicon layer having a thickness in a prescribed range and containing fluorine. The thickness of the fluorine-containing membrane layer is larger than 0 nm and 10 nm or smaller, and preferably in the range of 4 nm or more and 9 nm or less. The fluorine concentration in the fluorine-containing membrane layer is preferably as high as possible, and the nitrogen concentration, the oxygen concentration, and the hydrogen concentration are preferably low. SiFgas can be used in forming the fluorine-containing membrane layer.