# US 11,897,903 B2 · Metal organic frameworks and energy storage system including this

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- Number: US 11,897,903 B2
- Document ID: US11897903B2
- Status: Granted
- Kind: B2
- Application number: 17/979,259
- Filed: 2022-11-02
- Published: 2023-09-28
- Granted: 2024-02-13
- Earliest claimed: 2021-11-03
- Assignees: Korea Institute of Energy Research; Center for Advanced Meta-Materials
- Applicants: Korea Institute of Energy Research; Center for Advanced Meta-Materials
- Inventors: Hyun Uk Kim; Seong Ok Han; Jung Joon Yoo; Tae Woo Kim; Se Gi Byun; Hak Joo Lee; Young Hoon Seong; Yogendra Kumar
- Web page: https://patentgrep.com/patent/US11897903B2

## CPC

- C07F 15/045: {without a metal-carbon linkage}
- H01M 4/13: Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M 4/38: of elements or alloys
- H01M 4/60: of organic compounds
- Y02E 60/10: Energy storage using batteries
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- 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

The present invention relates to a metal-organic framework and an energy storage system having the same, and more specifically, to an energy storage system that is capable of providing excellent electrical conductivity and electrochemical capacity properties, especially excellent electrochemical performance at low temperatures, by means of a novel one-dimensional metal-organic framework having thianthrene-based organic ligands.

## Claims

### Claim 1

A metal-organic framework comprising the coordination bond between metals and organic ligands, the organic ligands having one or more species selected from the following group consisting of a first expression, a second expression, and a third expression:
wherein in the first expression, the second expression, or the third expression, is selected independently from the group consisting of OH, NH2, SH, SeH, and COOH, and Y is selectee independently from the group consisting of H, CN, F, Br, OH and OCH3, and
wherein the metal-organic framework has a length in the range of 50 nm to 300 μm and a width in the range of 10 nm to 200 μm.

### Claim 2 (depends on 1)

The metal-organic framework according to claim 1, wherein the metals are one or more kinds of metal elements or ions selected from the group consisting of Ni, Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Pd, Cd, La, W, Os, Ir, Pt, Au, Hg, Sm, Eu, Gd, Tb, Dy, Ho, Al, Ga, In, Ge, Sn, Pb, Li, Na, K, Rb, Cs, Mg, Ca, Sr, and Ba.

### Claim 3 (depends on 2)

The metal-organic framework according to claim 2, wherein the metal is one or more selected from the group consisting of Ni, Cu, Mn, Co, Ti and V.

### Claim 4 (depends on 1)

The metal-organic framework according to claim 1, having a shape of a rectangular parallelepiped.

### Claim 5 (depends on 1)

The metal-organic framework according to claim 1, wherein X is NH2.

### Claim 6 (depends on 1)

The metal-organic framework according to claim 1, wherein Y is H or F.

### Claim 7 (depends on 1)

The metal-organic framework according to claim 1, having an electrical conductivity of 1 to 500 μS/m.

### Claim 8 (depends on 1)

The metal-organic framework according to claim 1, having a BET specific surface area of 5 to 500 m2/g.

### Claim 9

An energy storage system comprising a slurry layer containing an electrode active material, the electrode active material comprising a metal-organic framework:
wherein said metal-organic framework comprises the coordination bond between metals and organic ligands, the organic ligands having one or more species selected from the following group consisting of a first expression, a second expression, and a third expression;
wherein in the first expression, the second expression, or the third expression, X is selected independently from the group consisting of OH, NH2, SH, SeH, and COOH, and Y is selected independently from the group consisting of H, CN, F, Br, OH, and OCH3.

### Claim 10 (depends on 9)

The energy storage system according to claim 9, wherein the slurry layer further comprises a conductive additive.

### Claim 11 (depends on 10)

The energy storage system according to claim 10, wherein 10 to 200 parts by weight of the conductive additive are present with respect to 100 parts by weight of the metal-organic framework.

### Claim 12 (depends on 10)

The energy storage system according to claim 10, having an initial discharge capacity at 0.2 C of 300 to 1000 mAhg−1.

### Claim 13 (depends on 10)

The energy storage system according to claim 10, having a reversible specific capacity at 0.2 C of 300 to 800 mAhg−1.

### Claim 14 (depends on 10)

The energy storage system according to claim 10, having a Coulombic efficiency of 70 to 98.5%.

### Claim 15 (depends on 10)

The energy storage system according to claim 10, further comprising a separator film.

### Claim 16 (depends on 9)

The energy storage system according to claim 9, increasing a specific capacity as the cycle number increases.

### Claim 17 (depends on 9)

The energy storage system according to claim 9, which is a secondary battery.

### Claim 18 (depends on 9)

The energy storage system according to claim 9, wherein X is NH2.

### Claim 19 (depends on 9)

The energy storage system according to claim 9, wherein Y is H or F.

### Claim 20 (depends on 9)

The energy storage system according to claim 9, wherein the metal-organic framework has a length in the range of 50 nm to 300 μm and a width in the range of 10 nm to 200 μm.