公开(公告)号：EP2314545A1

公开(公告)日：2011-04-27

申请号：EP09725552.5

申请日：2009-03-26

申请人： Toda Kogyo Corporation

发明人： KOBINO, Masashi ,  FUJITA, Katsuhiro ,  OKAZAKI, Seiji ,  HONDA, Tomohiro ,  NISHIO, Takahisa ,  FUJIMOTO, Ryota ,  HIRAMOTO, Toshiaki ,  SATO, Kouta ,  ITO, Akino ,  OKINAKA, Kenji ,  FUJINO, Shoichi ,  NISHIMOTO, Kazushi ,  UEGAMI, Masayuki ,  MORITA, Daisuke ,  KAJIYAMA, Akihisa

IPC分类号： C01G51/04 ,  H01M4/52

CPC分类号： C01G51/04 ,  C01G51/42 ,  C01P2002/52 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/525 ,  H01M10/052

摘要： The present invention relates to cobalt oxyhydroxide particles and lithium cobaltate particles which have a high density and a uniformly grown crystal structure. These objects of the present invention can be achieved by cobalt oxyhydroxide particles having an average secondary particle diameter (D50) of 3.0 to 25.0 µm, a BET specific surface area (BET) of 0.1 to 20.0 m 2 /g, a tap density (TD) of 1.0 to 3.5 g/cm 3 in which the average secondary particle diameter (D50) and the BET specific surface area (BET) of the cobalt oxyhydroxide particles satisfy the relational formula; and by lithium cobaltate particles having an average secondary particle diameter (D50) of 15.0 to 25.0 µm, a specific surface area (BET) of 0.10 to 0.30 m 2 /g, a compressed density (CD; as measured by applying a pressure of 2.5 t/cm 2 thereto) of 3.65 to 4.00 g/cm 3 . The cobalt oxyhydroxide particles are useful as a precursor of a positive electrode active substance (lithium cobaltate particles) used in a non-aqueous electrolyte secondary battery, and the lithium cobaltate particles are useful as a the positive electrode active substance used in a non-aqueous electrolyte secondary battery.

摘要翻译： 本发明涉及到碱式氢氧化钴的颗粒和钴酸锂具有高密度和均匀地生长晶体结构的粒子。 本发明的这些目的可以通过具有上的0.1 3.0至25.0微米，BET比表面积（BET）平均二次粒径（D50）氢氧化正钴颗粒取得〜20.0米2 /克，堆积密度（TD ）的1.0〜3.5克/厘米3，其中，平均二次粒径（D50）和氢氧化正钴颗粒的BET比表面积（BET）满足关系式; 和由钴酸锂颗粒，其具有上的12:10 15.0至25.0微米，比表面积（BET）平均二次粒径（D50）为00:30米2 /克，压缩密度（CD;通过施加2.5的压力测量 吨/ 3.65至4.00克/立方厘米厘米2于此）。 氢氧化正钴颗粒是作为在非水电解质二次电池中使用的正极活性物质（钴酸锂粒子）的前体是有用的，且钴酸锂颗粒是作为非水使用的正极活性物质有用的 电解质二次电池。