Redox flow battery

Patent metadata

Field	Value
Publication number	US-10290889-B2
Application number	US-201414909855-A
Country	US
Kind code	B2
Filing date	Aug 4, 2014
Priority date	Aug 7, 2013
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

Provided is a redox flow battery that allows suppression of generation of precipitate and also has a high energy density. The redox flow battery includes a battery cell including a positive electrode, a negative electrode, and a membrane interposed between the electrodes, the battery being configured to be charged and discharged while a positive electrode electrolyte and a negative electrode electrolyte are supplied to the battery cell, wherein the positive electrode electrolyte contains manganese ions, titanium ions, and reactive metal ions, the negative electrode electrolyte contains at least one species of metal ions selected from titanium ions, vanadium ions, chromium ions, and zinc ions, and the reactive metal ions are at least one selected from vanadium ions, chromium ions, iron ions, cobalt ions, copper ions, molybdenum ions, ruthenium ions, palladium ions, silver ions, tungsten ions, mercury ions, and cerium ions.

First claim

The invention claimed is:

1. A redox flow battery comprising a battery cell including a positive electrode, a negative electrode, and a membrane interposed between the electrodes, the battery being configured to be charged and discharged while a positive electrode electrolyte and a negative electrode electrolyte are supplied to the battery cell,
wherein the positive electrode electrolyte contains manganese ions, titanium ions, and reactive metal ions,
the negative electrode electrolyte contains at least one species of metal ions selected from titanium ions, vanadium ions, chromium ions, and zinc ions, and
the reactive metal ions are at least one selected from vanadium ions, iron ions, cobalt ions, copper ions, molybdenum ions, ruthenium ions, palladium ions, silver ions, tungsten ions, and cerium ions.

2. The redox flow battery according to claim 1 , wherein the positive electrode electrolyte further contains additive metal ions, and
the additive metal ions are at least one selected from aluminum ions, cadmium ions, indium ions, tin ions, antimony ions, iridium ions, gold ions, lead ions, bismuth ions, and magnesium ions.

3. The redox flow battery according to claim 1 , wherein a concentration of the reactive metal ions in the positive electrode electrolyte is 0.001 M or more and 5 M or less.

4. The redox flow battery according to claim 2 , wherein a concentration of the additive metal ions in the positive electrode electrolyte is 0.001 M or more and 1 M or less.

5. The redox flow battery according to claim 1 , wherein at least one of a concentration of the manganese ions in the positive electrode electrolyte and a concentration of the metal ions in the negative electrode electrolyte is 0.3 M or more and 5 M or less.

6. The redox flow battery according to claim 1 , wherein the negative electrode electrolyte contains, as the metal ions, titanium ions, and
at least one of a concentration of the manganese ions in the positive electrode electrolyte and a concentration of the titanium ions in the negative electrode electrolyte is 0.3 M or more and 5 M or less.

7. The redox flow battery according to claim 1 , wherein a concentration of the titanium ions in the positive electrode electrolyte is 5 M or less.

8. The redox flow battery according to claim 1 , wherein the reactive metal ions satisfy at least one of (A) to (J) below:
(A) the vanadium ions are at least one of divalent vanadium ions, trivalent vanadium ions, tetravalent vanadium ions, and pentavalent vanadium ions,
(B) the iron ions are at least one of divalent iron ions and trivalent iron ions,
(C) the cobalt ions are at least one of divalent cobalt ions and trivalent cobalt ions,
(D) the copper ions are at least one of monovalent copper ions and divalent copper ions,
(E) the molybdenum ions are at least one of tetravalent molybdenum ions, pentavalent molybdenum ions, and hexavalent molybdenum ions,
(F) the ruthenium ions are at least one of divalent ruthenium ions, trivalent ruthenium ions, and tetravalent ruthenium ions,
(G) the palladium ions are at least one of divalent palladium ions and tetravalent palladium ions,
(H) the silver ions are at least one of monovalent silver ions and divalent silver ions,
(I) the tungsten ions are at least one of tetravalent tungsten ions, pentavalent tungsten ions, and hexavalent tungsten ions,
and
(J) the cerium ions are at least one of trivalent cerium ions and tetravalent cerium ions.

9. The redox flow battery according to claim 1 , wherein the negative electrode electrolyte contains titanium ions and further contains manganese ions.

10. The redox flow battery according to claim 2 , wherein the negative electrode electrolyte contains titanium ions and further contains manganese ions.

11. The redox flow battery according to claim 9 , wherein a concentration of manganese ions in the negative electrode electrolyte is 0.3 M or more and 5 M or less.

12. The redox flow battery according to claim 2 , wherein the additive metal ions satisfy at least one of (a) to (j) below:
(a) the aluminum ions are at least one of monovalent aluminum ions, divalent aluminum ions, and trivalent aluminum ions,
(b) the cadmium ions are at least one of monovalent cadmium ions and divalent cadmium ions,
(c) the indium ions are at least one of monovalent indium ions, divalent indium ions, and trivalent indium ions,
(d) the tin ions are at least one of divalent tin ions and tetravalent tin ions,
(e) the antimony ions are at least one of trivalent antimony ions and pentavalent antimony ions,
(f) the iridium ions are at least one of monovalent iridium ions, divalent iridium ions, trivalent iridium ions, tetravalent iridium ions, pentavalent iridium ions, and hexavalent iridium ions,
(g) the gold ions are at least one of monovalent gold ions, divalent gold ions, trivalent gold ions, tetravalent gold ions, and pentavalent gold ions,
(h) the lead ions are at least one of divalent lead ions and tetravalent lead ions,
(i) the bismuth ions are at least one of trivalent bismuth ions and pentavalent bismuth ions, and
(j) the magnesium ions are at least one of monovalent magnesium ions and divalent magnesium ions.

13. The redox flow battery according to claim 1 , wherein the manganese ions are at least one of divalent manganese ions and trivalent manganese ions, and the titanium ions are at least one of trivalent titanium ions and tetravalent titanium ions.

Assignees

• Sumitomo Electric Industries

Inventors

• Kaku Hirokazu
• Dong Yongrong
• Hanafusa Kei
• Sekine Ryojun

Classifications

• H01M8/188 Primary

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

• Y02E60/528

  Cross-Sectional Technologies · mapped topic

• H01M2300/0005

  Acid electrolytes · CPC title

• H01M2300/0011

  Sulfuric acid-based · CPC title

• H01M8/08 Primary

  Fuel cells with aqueous electrolytes · CPC title