| abstract |
(57) [Summary] [Object] The present invention provides a Li x having a hexagonal crystal structure having excellent characteristics as a positive electrode material of a lithium secondary battery. Ni 1-y M y O 2 (M is Co, Fe, Mn, Cr, V, A method for synthesizing an electrode material represented by Ti) is provided. [Composition] One kind or a plurality of kinds of compounds selected from compounds containing cobalt ion, iron ion, manganese ion, chromium ion, vanadium ion and titanium ion are mixed with lithium oxide and nickel oxide, and the mixture is heated and reacted. Then, the reaction product is quenched from a temperature at which it has a hexagonal crystal structure. |