Redox flow battery

Patent metadata

Field	Value
Publication number	US-2016141697-A1
Application number	US-201514884235-A
Country	US
Kind code	A1
Filing date	Oct 15, 2015
Priority date	Nov 17, 2014
Publication date	May 19, 2016
Grant date	—

Abstract

The present invention relates to a redox flow battery, and is to provide a redox flow battery having high battery potential and high energy efficiency and providing a stable charge-discharge performance. The present invention provides a redox flow battery including: a stack arranged to separate a negative electrode unit and a positive electrode unit with respect to a separator; pumps configured to supply electrolytes including polythiophene to the stack; and tanks storing the polythiophene.

First claim

What is claimed is:

1 . A redox flow battery, comprising:
a stack arranged so that a negative electrode unit and a positive electrode unit are separated with respect to a separator; pumps configured to supply electrolytes including polythiophene to the stack; and tanks configured to store the polythiophene.

2 . The redox flow battery of claim 1 , wherein the stack comprises:
the negative electrode unit including a first end plate, a first collector, a first negative electrode plate, a first flow frame, a negative electrolyte inlet through which a negative electrolyte is introduced, and a negative electrolyte outlet through which the negative electrolyte is discharged; a membrane corresponding to the separator; and the positive electrode unit including a second end plate, a second collector, a first positive electrode plate, a second flow frame, a positive electrolyte inlet through which a positive electrolyte is introduced, and a positive electrolyte outlet through which the positive electrolyte is discharged.

3 . The redox flow battery of claim 1 , wherein the negative electrode unit comprises a negative electrode and the negative electrolyte, and the positive electrode unit comprises a positive electrode and the positive electrolyte.

4 . The redox flow battery of claim 3 , wherein at least one among the negative electrode and the positive electrode is coated with carbon.

5 . The redox flow battery of claim 3 , wherein at least one among the negative electrode and the positive electrode is a carbon felt electrode.

6 . The redox flow battery of claim 1 , wherein the pumps comprise a first pump configured to supply an electrolyte in which n-doped polythiophene is diffused to the negative electrode unit; and a second pump configured to supply an electrolyte in which p-doped polythiophene is diffused to the positive electrode unit.

7 . The redox flow battery of claim 1 , wherein the tanks comprise a first tank configured to store the electrolyte in which n-doped polythiophene is diffused; and a second tank configured to store the electrolyte in which p-doped polythiophene is diffused.

8 . The redox flow battery of claim 1 , wherein the tanks are configured to store electrolytes including the polythiophene, Ketjenblack, and tetraethylammonium tetrafluoroborate and propylene carbonate solution.

Assignees

• Korea Energy Research Inst

Inventors

• Yang Junghoon
• Jeon Jaedeok
• Shim Joonmok
• Shin Kyounghee
• Jin Changsoo
• Lee Bumsuk
• Jeon Myungseok
• Jung Kyunam
• Yeon Sunhwa

Classifications

• H01M8/188 Primary

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

• H01M8/04201

  Reactant storage and supply, e.g. means for feeding, pipes · CPC title

• H01M8/20

  Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence) · CPC title

• H01M4/96

  Carbon-based electrodes · CPC title

• Y02E60/50

  Fuel cells · CPC title