STABILIZED LITHIUM, MANGANESE AB2O4 SPINEL FOR RECHARGEABLE LITHIUM ELECTROCHEMICAL SYSTEMS THROUGH A AND B SITE DOPING, METHOD OF PREPARING THE SAME, AND LI ELECTROCHEMICAL CELL CONTAINING THE SAME

摘要

A process for preparing a stable Li_xK_yMn_2-zMe_zO₄ is provided. The general formula of the potassium “A” site and Group VIII Period 4 (Fe, Co and Ni) “B” site modified lithium manganese-based AB₂O₄ spinel is Li_xK_yMn_2-zMe_zO₄ where Me is Fe, Co, or Ni. In addition, a Li_xK_yMn_2-zMe_zO₄ cathode material for electrochemical systems is provided. Furthermore, a lithium or lithium-ion rechargeable electrochemical cell is provided, incorporating the Li_xK_yMn_2-zMe_zO₄ cathode material in a positive electrode.