Process for preparing electroactive insertion compounds and electrode materials obtained therefrom

A pure, partially substituted or doped lithium-ion reversible electrode material, said material having a particle size distribution comprising micron size particles and submicron size particles, said micron size particles and submicron size particles having the nominal formula AB(XO4)H in which:

• A is lithium, which may be partially substituted with another alkali metal representing less than 20% at. of said A;
• B is a main redox metal at oxidation level of +2 selected from the group consisting of Fe, Mn, Ni and any mixture thereof, which may be partially substituted by one or more additional metal at oxidation level between +1 and +5 and representing less than 35% at. of said main +2 redox metal, including 0;
• XO4 is any oxyanion wherein X is selected from the group consisting of P, S, V, Si, Nb, Mo and any combination thereof;
• and
• H is a fluoride, hydroxide or chloride anion representing less that 35% at. of the XO4 oxyanion, including 0.