Air battery

Patent metadata

Field	Value
Publication number	US-9379397-B2
Application number	US-201113877183-A
Country	US
Kind code	B2
Filing date	Oct 3, 2011
Priority date	Oct 7, 2010
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

An air battery having a main body including a container package member, an electrolytic solution contained in the container package member, a cathode having a cathode catalyst that is in contact with the electrolytic solution, and an anode that is in contact with the electrolytic solution; a tank storing the electrolytic solution; a pump circulating the electrolytic solution between the main body and the tank; an oxygen intake incorporating oxygen into the electrolytic solution in the way of circulation of the electrolytic solution; and a pipe arrangement connecting the tank, the pump, the oxygen intake and the main body so that the electrolytic solution circulates in the order thus named, wherein the oxygen intake has an oxygen selective permeable membrane.

First claim

The invention claimed is:

1. An air battery comprising:
a main body including a container package member, an electrolytic solution contained in the container package member, a cathode having a cathode catalyst that is in contact with the electrolytic solution, and an anode that is in contact with the electrolytic solution;
a tank storing the electrolytic solution;
a pump circulating the electrolytic solution between the main body and the tank;
an oxygen intake incorporating oxygen into the electrolytic solution in the way of circulation of the electrolytic solution; and
a pipe arrangement connecting the tank, the pump, the oxygen intake and the main body so that the electrolytic solution circulates in the order thus named,
wherein the oxygen intake has an oxygen selective permeable membrane and wherein an oxygen permeability coefficient (P O2 ) of the oxygen selective permeable membrane is 400×10 −10 cm 3 ·cm/cm 2 ·s·cm Hg or greater; and
wherein a contact angle of the electrolytic solution against a surface of the oxygen selective permeable membrane is 90° or greater.

2. The air battery according to claim 1 ,
wherein a contact angle of the electrolytic solution against a surface of the oxygen selective permeable membrane is 150° or greater.

3. The air battery according to claim 1 ,
wherein a ratio (P O2 /P CO2 ) of an oxygen permeability coefficient (P O2 ) to a carbon dioxide permeability coefficient (P CO2 ) for the oxygen selective permeable membrane is 0.15 or greater.

4. The air battery according to claim 1 ,
wherein the anode is at least one metal selected from the group consisting of lithium, sodium, magnesium, aluminum, potassium, calcium, zinc, iron and a hydrogen-absorbing alloy.

5. The air battery according to claim 1 ,
wherein the electrolytic solution is a solution comprising an electrolyte and water, and the electrolyte is at least one kind selected from the group consisting of KOH, NaOH, LiOH, Ba(OH) 2 and Mg(OH) 2 .

6. The air battery according to claim 1 ,
wherein the cathode catalyst comprises manganese dioxide or platinum.

7. The air battery according to claim 1 ,
wherein the cathode catalyst comprises a perovskite-type mixed oxide represented by ABO 3 ,
the ABO 3 comprises at least two atoms selected from the group consisting of La, Sr and Ca at the A site, and at least one atom selected from the group consisting of Mn, Fe, Cr and Co at the B site.

Assignees

• Yamaguchi Takitaro
• Sanada Takashi
• Sumitomo Chemical Co

Inventors

• Yamaguchi Takitaro
• Sanada Takashi

Classifications

• H01M12/065

  with plate-like electrodes or stacks of plate-like electrodes · CPC title

• H01M2/40

  Electricity · mapped topic

• H01M12/06 Primary

  with one metallic and one gaseous electrode · CPC title

• H01M8/04276 Primary

  Arrangements for managing the electrolyte stream, e.g. heat exchange · CPC title

• H01M50/77

  with external circulating path · CPC title