POSITIVE ELECTRODE MATERIALS FOR A LITHIUM BATTERY WITH A BASE OF AN OVERLITHIATED LAYERED OXIDE

摘要

The invention relates to a lithium battery positive electrode material comprising a powder of over-lithiated lamellar oxide fitting the following formula (I) : wherein: x is comprised in a range from 0.1 to 0.26; a+b+c=1 with the condition that a and b are different from 0; when c is different from 0, M is a transition element other than cobalt, said powder having a specific surface area ranging from 1.8 to 6 m2/g and having a tapped density greater than or equal to 1.6 g/cm3.