McDermott Will & Emery LLP
Anode active material, manufacturing method thereof, and non-aqueous electrolyte secondary battery
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±α[Me]4O8−x, wherein 0≦α<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.
Panasonic Corporation Osaka City University
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Tsutomu Masatoshi Hiroshi Hizuru
Ohzuku Nagayama Yoshizawa Koshina