METHOD OF PREPARATION OF ELECTRODE ACTIVE MATERIALS FOR ENHANCING PERFORMANCE OF LITHIUM SECONDARY BATTERIES AND LITHIUM SECONDARY BATTERIES CONTAINING ELECTRODE ACTIVE MATERIALS PREPARED BY THE SAME
摘要
PURPOSE: A manufacturing method of electrode active material is provided not to form precipitate on the electrode surface after high speed charging and discharging reaction for long time. CONSTITUTION: A manufacturing method of electrode active material comprises the following steps: mixing lithium compound with titanic compound; and heat-treating the reactive mixture at 700-900 deg. Celsius for 4-8 hours. The composition ratio of Ti / Li on the surface is controlled to higher than 0.8. The lithium titanium oxide controls the lithium element constitution on the surface as less than 20%. The mixing reaction of the lithium compound with titanic compound is completed by injecting the lithium compound and titanium compound into the solvent and agitates on the slurry. [Reference numerals] (AA) Atom; (BB) Fraction rate; (CC) Total sum
申请公布号
KR20120140396(A)
申请公布日期
2012.12.31
申请号
KR20110060109
申请日期
2011.06.21
申请人
SAMSUNG FINE CHEMICALS CO., LTD.
发明人
KIM, CHUN JOONG;CHOI, SEON JU;KIM, SOO CHAN;CHANG, DONG GYU;KIM, KEON IL;YANG, WOO YOUNG