Titanium-containing oxide powder, negative electrode active material composition using same, and all-solid-state secondary battery

3:

• The titanium-containing oxide powder according to claim 1, wherein the titanium-containing oxide powder has a specific surface area of 1 m2/g or more and 10 m2/g or less.

4:

• The titanium-containing oxide powder according to claim 1, wherein Al is present on particle surfaces of the titanium-containing oxide powder.

5:

• The titanium-containing oxide powder according to claim 1, wherein the Li salt is at least one type of Li salt selected from a group consisting of LiPF6, LiBF4, LiN(SO2F)2, LiN(SO2CF3)2, and LiN(SO2C2F5)2.

6:

• The titanium-containing oxide powder according to claim 1, wherein the Li salt comprises at least two types or more of Li salts selected from a group consisting of LiPF6, LiBF4, LiN(SO2F)2, LiN(SO2CF3)2, and LiN(SO2C2F)2.

7:

• The titanium-containing oxide powder according to claim 1, wherein the Li salt comprises at least one type of Li salt selected from a group consisting of LiPF6, LiBF4, LiN(SO2F)2, LiN(SO2CF)2, and LiN(SO2C2F5)2, and the Li salt further comprises at least one type of Li salt selected from a group consisting of a Li salt having an oxalic acid frame, a Li salt having a phosphoric acid frame, and a Li salt having an S═O group.

8:

• The titanium-containing oxide powder according to claim 1, wherein the organic solvent is an ether compound.

9:

• The titanium-containing oxide powder according to claim 1, wherein a molar ratio of the Li salt to the organic solvent is 0.3 or more and 2.5 or less.

10:

• The titanium-containing oxide powder according to claim 1, wherein a proportion of the solvate ionic liquid to the titanium-containing oxide powder is 0.1 mass % or more and 30 mass % or less.

12:

• The negative electrode active material composition according to claim 11, wherein the inorganic solid electrolyte is a sulfide inorganic solid electrolyte.

13:

• The negative electrode active material composition according to claim 11, wherein a content of the inorganic solid electrolyte is 1 mass % or more and 50 mass % or less in the negative electrode active material composition.