Patents Examined by Alix Echlemeyer
  • Anode active material, manufacturing method thereof, and non-aqueous electrolyte secondary battery
    Patent number: 7541114
    Abstract: In order to provide a 3V level non-aqueous electrolyte secondary battery with a flat voltage and excellent cycle life at a high rate with low cost, the present invention provides a positive electrode represented by the formula: Li2±?[Me]4O8?x, wherein 0??<0.4, 0?x<2, and Me is a transition metal containing Mn and at least one selected from the group consisting of Ni, Cr, Fe, Co and Cu, said active material exhibiting topotactic two-phase reactions during charge and discharge.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: June 2, 2009
    Assignees: Panasonic Corporation, Osaka City University
    Inventors: Tsutomu Ohzuku, Hiroshi Yoshizawa, Masatoshi Nagayama, Hizuru Koshina