Positive electrode material and secondary battery using the same

Disclosed is a positive electrode material having improved charging/discharging cycle characteristic, shelf stability, and discharge load characteristic, and a secondary battery using the material. A rolled electrode body obtained by rolling strip-shaped positive and negative electrodes with a separ...

Full description

Saved in:
Bibliographic Details
Main Authors NAGAMINE, MASAYUKI, KOGA, KEIZOU, KUYAMA, JUNJI, HOSOYA, YOSUKE
Format Patent
LanguageEnglish
French
German
Published 18.07.2001
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online AccessGet full text

Cover

More Information
Summary:Disclosed is a positive electrode material having improved charging/discharging cycle characteristic, shelf stability, and discharge load characteristic, and a secondary battery using the material. A rolled electrode body obtained by rolling strip-shaped positive and negative electrodes with a separator inbetween is provided on the inside of a battery can. The separator is impregnated with an electrolytic solution. The positive electrode contains a positive electrode material in which a coating portion is provided on the surface of a center portion made of a particulate substance capable of occluding and releasing a light metal. The coating portion is made of a conductive oxide. The quantity of the coating portion is 0.001 mol to 0.1 mol per 1 mol of the center portion. By the technique, while assuring conductivity, elution of the positive electrode material into the electrolytic solution can be suppressed and a reaction product can be prevented from being deposited on the surface of the positive electrode.
Bibliography:Application Number: EP20010100257