Semi-Vanadium Redox Flow Battery Using Electrolytes of Vanadium Ions and Iodine-Vitamin C

Patent metadata

Field	Value
Publication number	US-2016372776-A1
Application number	US-201514741590-A
Country	US
Kind code	A1
Filing date	Jun 17, 2015
Priority date	Jun 17, 2015
Publication date	Dec 22, 2016
Grant date	—

Abstract

A semi-vanadium (V) redox flow battery (semi-VRFB) includes a positive electrolyte tank, a negative electrolyte tank and a cell stack. The positive electrolyte tank is stored with a positive electrolyte of V ions; and the negative electrolyte tank is stored with an negative electrolyte of iodine (I)-vitamin C. The cell stack comprises a positive electrode, a negative electrode, an insulating film, a positive electrode plate and a negative electrode plate. The negative electrode is made of Carbon© and titanium dioxide (TiO 2 ), which can further comprises a metal or an alloy. The insulating film is located between the positive electrode and the negative electrode. The positive and negative electrode plates are located in front of the positive and negative electrodes, respectively. The positive and negative electrolytes flow through the positive and negative electrode plates to charge/discharge power by the electrochemical reactions of V ions and I-vitamin C at the positive and negative electrodes.

First claim

What is claimed is:

1 . A semi-vanadium (V) redox flow battery (semi-VRFB), comprising
a positive electrolyte tank, said positive electrolyte tank being stored with a positive electrolyte of V ions; a negative electrolyte tank, said positive electrolyte tank being stored with a negative electrolyte of iodine (I)-vitamin C; and a cell stack, said cell stack comprising
a positive electrode;
a negative electrode, said negative electrode being made of Carbon© and titanium dioxide (TiO 2 );
an insulating film, said insulating film being located between said positive electrode and said negative electrode;
a positive electrode plate, said positive electrode plate being located at an end of said cell stack and adhered to said positive electrode; and
a negative electrode plate, said negative electrode plate being located at another end of said cell stack and adhered to said negative electrode,
wherein said positive electrolyte and said negative electrolyte flow through said cell stack to charge and discharge through electrochemical reactions with coordination of V ions and I-vitamin C respectively existing in said positive electrolyte and said negative electrolyte.

2 . The semi-VRFB according to claim 1 ,
wherein said negative electrode is a set of layers of titanium dioxide/carbon/titanium dioxide (TiO 2 /C/TiO 2 ); said layers of TiO 2 are separately located at an end adhered to said insulating film and at another end adhered to said negative electrode plate; and said layer of C is located between said layers of TiO 2 .

3 . The semi-VRFB according to claim 1 ,
wherein said negative electrode further comprises layers of a material selected from a group consisting of a metal and an alloy.

4 . The semi-VRFB according to claim 3 ,
wherein said material is palladium (Pd); said negative electrode is a set of layers of TiO 2 /Pd/C/Pd/TiO 2 ; said layers of TiO 2 are separately located at an end adhered to said insulating film and at another end adhered to said negative electrode plate; and said layer of C is located between said layers of Pd.

5 . The semi-VRFB according to claim 3 ,
wherein said material is Pd; said negative electrode is a set of layers of Pd/TiO 2 /C/TiO 2 /Pd; said layers of Pd are separately located at an end adhered to said insulating film and at another end adhered to said negative electrode plate; and said layer of C is located between said layers of TiO 2 .

6 . The semi-VRFB according to claim 1 ,
wherein said positive electrolyte tank is further connected with an anode circulating pump and said negative electrolyte tank is further connected with a cathode circulating pump.

Assignees

• Inst Nuclear Energy Res Atomic Energy Council Executive Yuan Roc

Inventors

• Hsieh Chin-Lung
• Huang shu-ling
• Tsai Tz-Jiun
• Hsueh Ming-Wei
• Chen Mei-Ling

Classifications

• H01M8/188 Primary

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

• H01M8/20

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

• H01M4/8673

  Electrically conductive fillers · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M2004/8684

  Negative electrodes · CPC title