Raw material of electrolyte solution, method for manufacturing electrolyte solution and method for manufacturing redox flow battery

Patent metadata

Field	Value
Publication number	US-11217808-B2
Application number	US-201816760654-A
Country	US
Kind code	B2
Filing date	Nov 2, 2018
Priority date	Nov 7, 2017
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A raw material of an electrolyte solution that is to be dissolved in a solvent to form an electrolyte solution, and the raw material of an electrolyte solution is a raw material of an electrolyte solution that is a solid or semisolid that contains Ti in an amount of 2 mass % to 83 mass % inclusive, Mn in an amount of 3 mass % to 86 mass % inclusive, and S in an amount of 6 mass % to 91 mass % inclusive.

First claim

The invention claimed is:

1. A raw material of an electrolyte solution that is to be dissolved in a solvent to form an electrolyte solution, comprising:
Ti in an amount of 2 mass % to 83 mass % inclusive;
Mn in an amount of 3 mass % to 86 mass % inclusive; and
S in an amount of 6 mass % to 91 mass % inclusive,
wherein the raw material of an electrolyte solution is a solid or semisolid, and
wherein all of the first to third highest peaks in X-ray diffraction are located in at least one range of 20.0° to 25.0° inclusive and 27.5° to 32.5° inclusive of 2θ, and the first highest peak is located in a range of 27.5° to 32.5° inclusive of 2θ.

2. The raw material of an electrolyte solution according to claim 1 ,
wherein a peak in X-ray diffraction is located in at least one range of 11.90°±0.5°, 24.05°±0.5°, 30.75°±0.5°, and 41.35°±0.5° of 2θ.

3. The raw material of an electrolyte solution according to claim 1 ,
wherein a peak in X-ray diffraction is located in at least one range of 19.45°±0.5°, 26.00°±0.5°, 48.10°±0.5°, and 54.00°±0.5° of 2θ.

4. The raw material of an electrolyte solution according to claim 1 ,
wherein a peak in X-ray diffraction is located in at least one range of 22.80°±0.5°, 40.20°±0.5°, and 43.70°±0.5° of 2θ.

5. A method for manufacturing an electrolyte solution, comprising
a step of dissolving the raw material of an electrolyte solution according to claim 1 in a solvent of an electrolyte solution.

6. A method for manufacturing a redox flow battery, comprising
a step of storing an electrolyte solution in tanks to be connected to a battery cell provided with a positive electrode, a negative electrode, and a membrane interposed between the positive electrode and the negative electrode,
wherein the raw material of an electrolyte solution is a solid or semisolid comprising:
Ti in an amount of 2 mass % to 83 mass % inclusive;
Mn in an amount of 3 mass % to 86 mass % inclusive; and
S in an amount of 6 mass % to 91 mass % inclusive, and

wherein all of the first to third highest peaks in X-ray diffraction are located in at least one range of 20.0° to 25.0° inclusive and 27.5° to 32.5° inclusive of 2θ, and the first highest peak is located in a range of 27.5° to 32.5° inclusive of 2θ.

Assignees

• Sumitomo Electric Industries
• Tayca Corp

Inventors

• Kaku Hirokazu
• Tatsumi Ryouta
• Tsurumura Tatsuya

Classifications

• C01G45/22

  Compounds containing manganese, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• H01M8/188 Primary

  by recharging of redox couples containing fluids; Redox flow type batteries · CPC title

• C01P2002/52

  containing elements as dopants · CPC title

• H01M2300/0008

  Phosphoric acid-based · CPC title

• H01M2004/8684

  Negative electrodes · CPC title