NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY CONTAINING SURFACE-FLUORINATED B-TYPE TITANIUM OXIDE AND MANUFACTURING METHOD THEREOF, AND LITHIUM ION BATTERY USING THE SAME

NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY CONTAINING SURFACE-FLUORINATED B-TYPE TITANIUM OXIDE AND MANUFACTURING METHOD THEREOF, AND LITHIUM ION BATTERY USING THE SAME

PROBLEM TO BE SOLVED: To provide B-type titanium oxide powder which has charge and discharge characteristics and rate characteristic of B-type titanium oxide (TiO(B)) powder improved by a simple treatment and can be suitably used as a negative electrode material of a lithium ion battery.SOLUTION: B-...

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Bibliographische Detailangaben
Hauptverfasser: INABA MINORU, TASAKA AKIMASA, TAKEBAYASHI HITOSHI, SAITO MORIHIRO, TAKAGI MIKIHIRO, HATSUSHIRO YOSHIO
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS
INORGANIC CHEMISTRY
METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide B-type titanium oxide powder which has charge and discharge characteristics and rate characteristic of B-type titanium oxide (TiO(B)) powder improved by a simple treatment and can be suitably used as a negative electrode material of a lithium ion battery.SOLUTION: B-type titanium oxide powder is reacted at 0°C to 200°C for one minute to 10 days under fluorine-containing gas atmosphere to obtain B-type titanium oxide powder with the surface fluorinated. The fluorination treatment is preferably carried out at 0.01 atm to 2 atm. As the fluorine-containing gas, gas containing a fluorine compound selected from fluorine (F), nitrogen trifluoride (NF), methoxynitrogen trifluoride (N(CF)) and chlorine trifluoride (ClF) gases and the like is preferably used.