Magnesium oxygen battery

Patent metadata

Field	Value
Publication number	US-10263305-B2
Application number	US-201514955618-A
Country	US
Kind code	B2
Filing date	Dec 1, 2015
Priority date	Dec 1, 2015
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

A rechargeable magnesium oxygen battery including a negative electrode, a positive electrode, a non-aqueous magnesium ion electrolyte layer between the negative and positive electrodes, and an oxygen restrictor. The oxygen restrictor is configured to restrict oxygen crossover from the positive electrode to the negative electrode.

First claim

What is claimed is:

1. A rechargeable magnesium oxygen battery comprising:
a negative electrode configured to absorb magnesium and release magnesium ion;
a positive electrode configured to discharge product that includes magnesium and oxygen during a discharge process of the battery;
a non-aqueous magnesium ion electrolyte layer between the negative electrode and the positive electrode; and
an oxygen restrictor configured to restrict oxygen crossover from the positive electrode to the negative electrode;
wherein the oxygen restrictor includes O 2 pass prevention materials present in the non-aqueous magnesium ion electrolyte layer.

2. The rechargeable magnesium oxygen battery of claim 1 , wherein the O 2 pass prevention materials are porous and configured to absorb oxygen.

3. The rechargeable magnesium oxygen battery of claim 2 , wherein the pore size of the O 2 pass prevention materials is greater than 10 Å.

4. The rechargeable magnesium oxygen battery of claim 2 , wherein the O 2 pass prevention materials include CeO 2 , CeO 2 —Zr—O 2 , Ba(Sr)FeO 3 , BaYMn 2 O 5 , Ca 2 (Al 0.5 Mn 0.5 ) 2 O 5 , or porous electrically-insulating compounds including: porous ceramics, meso porous silica, alumina-silica gel, or zeolite.

5. The rechargeable magnesium oxygen battery of claim 2 , further comprising:
the oxygen restrictor includes a first material layer between the positive electrode and the non-aqueous magnesium ion electrolyte layer; and
the oxygen restrictor includes a second material layer between the negative electrode and the non-aqueous magnesium ion electrolyte layer.

6. The rechargeable magnesium oxygen battery of claim 1 , wherein the oxygen restrictor includes an ion exchange membrane configured to restrict passage of O 2 therethrough.

7. The rechargeable magnesium oxygen battery of claim 6 , wherein the ion exchange membrane includes a styrene type polyamine, an acrylic acid polymer, or a polysulfone.

8. The rechargeable magnesium oxygen battery of claim 6 , wherein the membrane covers at least one of the positive electrode and the negative electrode.

9. The rechargeable magnesium oxygen battery of claim 1 , wherein the negative electrode includes the metal including at least magnesium.

10. The rechargeable magnesium oxygen battery of claim 1 , wherein the oxygen restrictor is a material layer between the negative electrode and the non-aqueous magnesium ion electrolyte layer.

11. The rechargeable magnesium oxygen battery of claim 1 , wherein the oxygen restrictor is a material layer between the positive electrode and the non-aqueous magnesium ion electrolyte layer.

12. A rechargeable magnesium oxygen battery comprising:
a negative electrode configured to absorb magnesium and release magnesium ion;
a positive electrode configured to produce discharge product that includes magnesium and oxygen during a discharge process of the battery; and
an oxygen adsorber between the negative electrode and the positive electrode configured to adsorb oxygen to prevent oxygen from crossing over to the negative electrode from the positive electrode;
wherein the oxygen adsorber includes CeO 2 , CeO 2 —Zr—O 2 , Ba(Sr)FeO 3 , BaYMn 2 O 5 , Ca 2 (Al 0.5 Mn 0.5 ) 2 O 5 , or porous electrically-insulating compounds including: porous ceramics, meso porous silica, alumina-silica gel, or zeolite.

13. The rechargeable magnesium oxygen battery of claim 12 , wherein the oxygen adsorber includes perovskite-type oxide, brown millerite type oxide, porous metal complex, or gas adsorbent material.

Assignees

• Denso Corp
• Univ Michigan Regents

Inventors

• Naruse Junichi
• Siegel Donald

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M12/08 Primary

  composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title