Complexometric precursor formulation methodology for industrial production of fine and ultrafine powders and nanopowders for lithium metal oxides for battery applications
A compound M j X p which is particularly suitable for use in a battery prepared by the complexometric precursor formulation methodology wherein: M j is at least one positive ion selected from the group consisting of alkali metals, alkaline earth metals and transition metals and j is an integer representing the moles of said positive ion per moles of said M j X p ; and X p , a negative anion or polyanion from Groups IIIA, IV A, VA, VIA and VIIA and may be one or more anion or polyanion and p is an integer representing the moles of said negative ion per moles of said M j X p .
1. A method of forming a powder M j X p wherein M j is a positive ion selected from alkali metal, alkaline earth metal or a transition metal; X p is a monoatomic or a polyatomic anion selected from groups IIIA, IVA, VA, VIA or VIIA comprising:
charging a reactor vessel with a first reactant comprising said Mj;
forming a surface interface of said first reactant;
adding a second reactant comprising said Xp to said surface interface thereby inducing a surface reaction between said Mj and said Xp at said surface interface thereby forming MjXp;
drying said MjXp to obtain a dry powder; and
calcining said dried powder of said MjXp.
2. The method of forming a powder M j X p of claim 1 wherein said surface interface is a bubble.
3. The method of forming a powder M j X p of claim 1 wherein said surface reaction comprises a complexcelle.
4. The method of forming a powder M j X p of claim 1 wherein at least one of said first reactant or said second reactant is a solution.