Precursor of Lithium Titanate Composite Product and Method for Producing Same

Abstract

Provided is a precursor with which it is possible to form a solid electrolyte and negative electrode active material while preventing loss of mass during firing at 1,000° C. or lower. A precursor for forming a composite product of lithium titanate and lithium lanthanum titanate by firing, wherein a precursor of a lithium titanate composite product is used that is characterized in comprising a solid material that includes a composite salt of Li and Ti and an La source compound. Such a precursor of a lithium titanate composite product is obtained by a production method that is characterized in including a step for forming a solid material by heating a mixture that includes at least a Ti source, a Li source, and solvent by solvothermal treatment.

Dependencies are inferred from the claim text.