NONAQUEOUS SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery of sufficient capacity from the viewpoint of battery design, causing no degradation in capacity by cycle treatment and appropriately controlled in the charge amount of a negative electrode. SOLUTION: In this nonaqueous secondary battery...

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Bibliographische Detailangaben
Hauptverfasser:	KUSANO TERUHIKO, YADA SHIZUKUNI, YAMAZAKI SATOSHI, HAGA TAKESHI, KINOSHITA HAJIME, KURIYAMA KAZUYA
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery of sufficient capacity from the viewpoint of battery design, causing no degradation in capacity by cycle treatment and appropriately controlled in the charge amount of a negative electrode. SOLUTION: In this nonaqueous secondary battery provided with a positive electrode, the negative electrode and a nonaqueous electrolyte, (1) the positive electrode is formed of a material that can electrochemically store and discharge lithium, and (2) the negative electrode includes a negative electrode material formed of polycyclic aromatic hydrocarbon obtained by thermally reacting a raw material mainly composed of pitch so that (a) the element ratio of hydrogen/carbon is in a range of 0.50 to 0.05 and that (b) the specific surface area by a BET method is in a range of 0.1 to 50 m2/g. Negative electrode release potential in charging in the negative electrode is 20 to 100 mV to lithium potential. COPYRIGHT: (C)2004,JPO