Patent ID: 6998069
Filing Date: 2006-02-14
Classification: C01G,C01P,H01M,Y02E

Abstract:
1. A method of producing electrode material for positive electrodes of rechargeable lithium batteries having a layer structure, based on a lithium transition-metal oxide consisting essentially of lithium, manganese, nickel, and a dopant selected from the group consisting of aluminum and boron and combinations thereof, said method comprising: reacting an acetate, nitrate or hydroxide of Mn and/or Ni with LiOBr to form a precipitate wherein the ratio of [moles Li: (moles Mn+moles Ni)]≦1.2 washing and drying the precipitate at least once adding LiOH to the precipitate heating the precipitate from 4 to 48 hours in an oxidative atmosphere at temperatures up to about 900° C.