COMPOSITE PARTICLES, METHOD FOR PRODUCING SAME, EL

专利名称：COMPOSITE PARTICLES, METHOD FOR

PRODUCING SAME, ELECTRODE MATERIALFOR SECONDARY BATTERIES, ANDSECONDARY BATTERY

发明人：KAWASAKI, Takashi,YOSHINO,

Nobuyuki,MURATA, Hiroshi,SAWAI,Takehiko,SAITO, Shinji,URAO, Kazunori

申请号：EP12849309.5申请日：20121114公开号：EP2781483B1公开日：20180523

摘要：Provided is positive electrode material for a highly safe lithium-ion secondarybattery that can charge and discharge a large current while having long service life.Disclosed are composite particles comprising: particles of lithium-containing phosphate;and carbon coating comprising at least one carbon material selected from the groupconsisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbonmaterial produced by linking together fibrous carbon material and chain-like carbonmaterial, wherein each particle is coated with the carbon coating. The fibrous carbonmaterial is preferably a carbon nanotube with an average fiber size of 5 to 200 nm. Thechain-like carbon material is preferably carbon black produced by linking, like a chain,primary particles with an average particle size of 10 to 100 nm. The lithium-containingphosphate is preferably LiFePO 4 , LiMnPO 4 , LiMn X Fe (1-X) PO 4 , LiCoPO 4 , or Li 3 V 2(PO 4 ) 3 .

申请人：DENKA COMPANY LTD,SEI CORP

地址：JP,JP

国籍：JP,JP

代理机构：Gulde & Partner

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