# US 12,113,168 B2 · Solid electrolyte, secondary battery and capacitor

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- Number: US 12,113,168 B2
- Document ID: US12113168B2
- Status: Granted
- Kind: B2
- Application number: 17/800,591
- Filed: 2021-02-17
- Published: 2023-10-26
- Granted: 2024-10-08
- Earliest claimed: 2020-02-20
- Assignees: National University Corporation Shizuoka University
- Applicants: National University Corporation Shizuoka University
- Inventors: Makoto Moriya
- Web page: https://patentgrep.com/patent/US12113168B2

## CPC

- H01G 11/56: Solid electrolytes, e.g. gels; Additives therein
- H01M 10/0564: the electrolyte being constituted of organic materials only
- H01G 9/028: Organic semiconducting electrolytes, e.g. TCNQ
- H01G 11/06: with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
- H01M 10/052: Li-accumulators
- H01M 10/0565: Polymeric materials, e.g. gel-type or solid-type
- H01M 2300/0065: Solid electrolytes
- H01M 2300/0082: Organic polymers
- Y02E 60/10: Energy storage using batteries
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A solid electrolyte includes a molecular crystal, and an inorganic filler.

## Claims

### Claim 1

A solid electrolyte comprising:
a molecular crystal, and
an inorganic filler that includes an inorganic oxide, wherein the molecular crystal includes an ionic compound including a cation of a monovalent to trivalent metal atom, an anion, and a ligand of the ionic compound and the molecular crystal includes at least one selected from the group consisting of [LIN(SO2F)2(NCCH2CH2CN)2]n, [Li2{N(SO2CF3)2}2(NCCH2CH2CN)3]n, [Li{N(SO2CF3)2}{(CH3)2NCH2CH2N(CH3)2}]n, [Li{N(SO2CF2)2CF2X(CH3)2NCH2CH2N(CH3)2}]n and [Li{N(SO2C4F9)2HC6H4(OCH3)2}]n, wherein each n independently represents an integer of 1 or more.

### Claim 2 (depends on 1)

The solid electrolyte according to claim 1, wherein the molecular crystal further includes at least one molecular crystal selected from the group consisting of [Ma{N(SO2F)2}bXc]n, [Ma{N(SO2CF3)2}bXc]n, [Ma{N(SO2CF2)2CF2}bXc]n and [Ma{N(SO2C4F9)2}bXc], in the at least one molecular crystal, each M independently represents a monovalent to trivalent metal atom, each a independently represents an integer of 1 or more, each b independently represents an integer of 1 or more, each c independently represents an integer of 1 or more, each n independently represents an integer of 1 or more, in each Formula, (valence of M)×a−b=0 is satisfied, and each X independently represents a ligand.

### Claim 3 (depends on 2)

The solid electrolyte according to claim 2, wherein a content amount of the inorganic filler is from 1% by mass to 85% by mass with respect to a total amount of the molecular crystal and the inorganic filler.

### Claim 4 (depends on 1)

The solid electrolyte according to claim 1, wherein a content amount of the inorganic filler is from 1% by mass to 85% by mass with respect to a total amount of the molecular crystal and the inorganic filler.

### Claim 5 (depends on 1)

The solid electrolyte according to claim 1, wherein a total content amount of the molecular crystal and the inorganic filler is 70% by mass to 95% by mass, with respect to the total amount of the solid electrolyte.

### Claim 6 (depends on 1)

The solid electrolyte according to claim 1, wherein the inorganic filler includes particles selected from the group consisting of silica (SiO2), alumina (Al2O3), celia (CeO2), zirconia (ZrO2), titanium oxide (TiO2), barium titanate (BaTiO3), strontium titanate (SrTiO3), calcium titanate (CaTiO3), iron oxide, lead oxide, tin oxide, cerium oxide, calcium oxide, zinc oxide, trimanganese tetraoxide, magnesium oxide, niobium oxide, tantalum oxide, tungsten oxide, antimony oxide, and indium tin oxide (ITO).

### Claim 7 (depends on 1)

A secondary battery comprising the solid electrolyte according to claim 1.

### Claim 8 (depends on 1)

A capacitor comprising the solid electrolyte according to claim 1.

### Claim 9 (depends on 2)

A secondary battery comprising the solid electrolyte according to claim 2.

### Claim 10 (depends on 4)

A secondary battery comprising the solid electrolyte according to claim 4.

### Claim 11 (depends on 2)

A capacitor comprising the solid electrolyte according to claim 2.