公开(公告)号：US20120079712A1

公开(公告)日：2012-04-05

申请号：US13316259

申请日：2011-12-09

申请人： Denis Yau Wai YU ,  Kazunori Donoue ,  Toshikazu Yoshida ,  Tetsuo Kadohata ,  Tetsuyuki Murata ,  Shigeki Matsuta

发明人： Denis Yau Wai YU ,  Kazunori Donoue ,  Toshikazu Yoshida ,  Tetsuo Kadohata ,  Tetsuyuki Murata ,  Shigeki Matsuta

IPC分类号： H01M10/04 ,  C01D15/00

CPC分类号： H01M4/04 ,  C01B25/45 ,  H01M4/5825 ,  H01M10/0525 ,  Y10T29/49108

摘要： A method of producing an active material for a lithium secondary battery, by which impurities causing problems in synthesizing an active material for a lithium secondary battery, including a lithium transition metal oxyanion compound are removed efficiently and enhancement of an energy density is realized, is provided. By cleaning the active material for a lithium secondary battery, including a lithium transition metal oxyanion compound, with a pH buffer solution, for example, it is possible to efficiently remove just only impurities such as Li3PO4 or Li2CO3, or a substance, other than LiFePO4, in which the valence of Fe is bivalent such as FeSO4, FeO or Fe3(PO4)2 without dissolving Fe of LiFePO4.

摘要翻译： 提供一种生产用于锂二次电池的活性材料的方法，其中提供了有效地除去包含锂过渡金属氧阴离子化合物的锂二次电池的活性材料合成的问题的杂质并实现能量密度的提高 。 通过例如利用pH缓冲溶液清洗包含锂过渡金属氧阴离子化合物的锂二次电池的活性物质，可以仅仅有效地除去Li 3 PO 4或Li 2 CO 3等杂质，或除了LiFePO 4以外的物质 ，其中铁的价数是二价的，如FeSO 4，FeO或Fe 3（PO 4）2，而不溶解LiFePO 4的Fe。

公开(公告)号：US20140017527A1

公开(公告)日：2014-01-16

申请号：US14006896

申请日：2012-04-10

申请人： Denis Yau Wai YU

发明人： Denis Yau Wai YU

IPC分类号： H01M10/42

CPC分类号： H01M10/4235 ,  H01M2/345 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M2200/20

摘要： An object of the invention is to improve the safety of nonaqueous electrolyte secondary batteries in the event of overcharging. The invention is directed to a nonaqueous electrolyte secondary battery including a positive electrode containing a positive electrode active material, a negative electrode, a nonaqueous electrolyte, a separator and a current interrupting element, the positive electrode active material including a first compound represented by the general formula LiCoxM1-xO2 (wherein 0.1≦x≦1 and M is one or more metal elements including at least Ni or Mn) and a second compound generating a gas when the positive electrode potential becomes not less than 4.5 V versus lithium metal, the current interrupting element being a pressure-sensitive current interrupting element.

摘要翻译： 本发明的目的在于提高非充电电池的非水电解质二次电池的安全性。 本发明涉及一种非水电解质二次电池，其包括含有正极活性物质，负极，非水电解质，隔膜和电流中断元件的正极，所述正极活性物质包含由通式 式LiCoxM1-xO2（其中0.1≤x≤1且M是至少包括Ni或Mn的一种或多种金属元素）和当正电极电位相对于锂金属不低于4.5V时产生气体的第二化合物，电流 中断元件是压敏电流中断元件。

公开(公告)号：US20120115043A1

公开(公告)日：2012-05-10

申请号：US13292574

申请日：2011-11-09

申请人： Denis Yau Wai YU ,  Katsunori Yanagida ,  Hidekazu Yamamoto

发明人： Denis Yau Wai YU ,  Katsunori Yanagida ,  Hidekazu Yamamoto

IPC分类号： H01M10/056 ,  H01M4/505

CPC分类号： H01M4/505 ,  H01M4/386 ,  H01M4/483 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/4235 ,  H01M2004/021 ,  H01M2300/0034 ,  H01M2300/0037

摘要： A nonaqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte solution containing a nonaqueous solvent. The positive electrode active material contains a lithium-containing transition metal oxide represented by general formula (1), Li1+xMnyMzO2 (where x, y, and z satisfy 0

摘要翻译： 非水电解质二次电池包括含有正极活性物质的正极，含有负极活性物质的负极和含有非水溶剂的非水电解液。 正极活性物质含有由通式（1）表示的含锂过渡金属氧化物Li1 + xMnyMzO2（其中x，y和z满足0