Electrolytic solution for non-aqueous secondary battery, non-aqueous secondary battery, and metal complex

Patent metadata

Field	Value
Publication number	US-11201352-B2
Application number	US-201916424494-A
Country	US
Kind code	B2
Filing date	May 29, 2019
Priority date	Jan 20, 2017
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

Provided are an electrolytic solution for a non-aqueous secondary battery containing an electrolyte, an organic solvent, and a metal complex represented by General Formula (I), a non-aqueous secondary battery in which the electrolytic solution for a non-aqueous secondary battery is used, and a metal complex.

In General Formula (I), M represents a transition metal.
k represents an integer of 0 or more, m represents an integer of 0 to 4, and n represents an integer of 1 or more. Here, k+n represents a valence of M. R 1 represents an alkyl group, an aryl group, an alkoxy group, a carbonyl group-containing group, a sulfonyl group-containing group, or a halogen atom. R 2 and R 3 represent a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, a carbonyl group-containing group, a sulfonyl group-containing group, or a halogen atom. L represents a monodentate ligand.

First claim

What is claimed is:

1. An electrolytic solution for a non-aqueous secondary battery comprising:
an electrolyte;
an organic solvent; and
a metal complex represented by General Formula (I),

in General Formula (I), M represents a transition metal,
k represents an integer of 0 or more, m represents an integer of 0 to 4, and n represents an integer of 1 or more, here, k+n represents a valence of M,
R 1 represents an alkyl group, an aryl group, an alkoxy group, a carbonyl group-containing group, a sulfonyl group-containing group, or a halogen atom,
R 2 and R 3 represent a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, a carbonyl group-containing group, a sulfonyl group-containing group, or a halogen atom, and
L represents a monodentate ligand.

2. The electrolytic solution for a non-aqueous secondary battery according to claim 1 ,
wherein M is Ti, Zr, or Hf.

3. The electrolytic solution for a non-aqueous secondary battery according to claim 1 ,
wherein a compound having a carbonate group is included as the organic solvent.

4. The electrolytic solution for a non-aqueous secondary battery according to claim 1 ,
wherein a content of the metal complex represented by General Formula (I) is 0.05 to 5% by mass with respect to the total mass of the electrolytic solution.

5. A non-aqueous secondary battery comprising:
a positive electrode;
a negative electrode; and
the electrolytic solution for a non-aqueous secondary battery according to claim 1 .

Assignees

• Fujifilm Corp

Inventors

• Kataoka Shohei

Classifications

• C07F7/00 Primary

  Compounds containing elements of Groups 4 or 14 of the Periodic Table · CPC title

• H01M10/0567 Primary

  characterised by the additives · CPC title

• C07F7/28

  Titanium compounds · CPC title

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• H01M2300/0037

  Mixture of solvents · CPC title