Positive electrode material for use in non-aqueous electrolyte battery, process for preparing the same, and non-aqueous electrolyte battery

A process for preparing a positive electrode material for use in a non-aqueous electrolyte battery comprising the steps of:

• adding an alkaline solution to a mixture solution containing at least salts of Ni, Co and Mn and in addition, M, which denotes at least one element selected from the group consisting of B, Al, Si, Fe, V, Cr, Cu, Zn, Ga and W, thereby to obtain a compound hydroxide of these metals,
• mixing a lithium compound with said compound hydroxide, and
• sintering said mixture of the compound hydroxide and the lithium compound.

A non-aqueous electrolyte battery comprising a positive electrode employing a lithium-metal compound oxide as a positive electrode material, a negative electrode and a non-aqueous electrolyte solution,

• said positive electrode material comprising the lithium-metal compound oxide containing at least Ni, Co and Mn, and in addition, M, which denotes at least one element selected from the group consisting of B, Al, Si, Fe, V, Cr, Cu, Zn, Ga, and W, and having a peak with a full width at half maximum of not greater than 0.22.degree. in a range of 2.theta.=18.71.+-.0.25.degree. as measured by the powder X-ray diffraction analysis using a Cu-K.alpha. X-ray source.

A non-aqueous electrolyte battery comprising a positive electrode employing a lithium-metal compound oxide as a positive electrode material, a negative electrode and a non-aqueous electrolyte solution,

• said positive electrode material comprising the lithium-metal compound oxide containing at least Ni, Co and Mn, and in addition, M, which denotes at least one element selected from the group consisting of B, Al, Si, Fe, V, Cr, Cu, Zn, Ga, and W,
• said non-aqueous electrolyte solution comprising a solvent containing ethylene carbonate and a solute containing at least one type of fluorine-containing compound.