Nitrogen battery, fuel synthesizing apparatus, and fuel synthesizing method

Patent metadata

Field	Value
Publication number	US-2019260014-A1
Application number	US-201916259359-A
Country	US
Kind code	A1
Filing date	Jan 28, 2019
Priority date	Feb 22, 2018
Publication date	Aug 22, 2019
Grant date	—

Abstract

The nitrogen battery of the present disclosure includes a positive electrode that uses nitrogen as a positive electrode active material, a negative electrode, and an ion conducting medium that contains a silane compound and conducts alkali metal ions.

First claim

What is claimed is:

1 . A nitrogen battery comprising:
a positive electrode that uses nitrogen as a positive electrode active material; a negative electrode; and an ion conducting medium that contains a silane compound and conducts alkali metal ions.

2 . The nitrogen battery according to claim 1 , wherein the ion conducting medium contains a trialkyl silane compound as the silane compound.

3 . The nitrogen battery according to claim 1 , wherein the ion conducting medium is a nonaqueous electrolytic solution containing the silane compound in an amount in the range of 0.5 mol/L or more and less than 7.5 mol/L inclusive.

4 . The nitrogen battery according to claim 1 , wherein the positive electrode includes an electrode catalyst with ions of a transition metal immobilized thereon.

5 . The nitrogen battery according to claim 4 , wherein the electrode catalyst is a metal-organic framework containing the transition metal and an organic compound, and the metal-organic framework includes at least one of structures represented by formulas (1) to (3).

6 . The nitrogen battery according to claim 1 , wherein the positive electrode is a porous electrode having an interface at which gaseous nitrogen and the ion conducting medium are uniformly distributed.

7 . The nitrogen battery according to claim 1 , wherein the positive electrode is a porous carbon electrode, and
wherein the silane compound is chlorotrimethylsilane.

8 . The nitrogen battery according to claim 1 , further comprising a solid electrolyte that is interposed between the positive electrode and the negative electrode and conducts the alkali metal ions,
wherein the ion conducting medium comprises a positive electrode-side ion conducting medium in contact with the positive electrode and a negative electrode-side ion conducting medium in contact with the negative electrode, and wherein at least the positive electrode-side ion conducting medium contains the silane compound.

9 . The nitrogen battery according to claim 1 , wherein the negative electrode includes a negative electrode active material that occludes and releases lithium, and
wherein the ion conducting medium conducts lithium ions.

10 . A fuel synthesizing apparatus comprising the nitrogen battery according to claim 1 ,
wherein a silylamine obtained after actuation of the nitrogen battery is treated with water to thereby produce ammonia as fuel.

11 . A fuel synthesizing method that uses the nitrogen battery according to claim 1 ,
wherein a silylamine obtained after actuation of the nitrogen battery is treated with water to thereby produce ammonia as fuel.

Assignees

• Toyota Chuo Kenkyusho Kk

Inventors

• Ogihara Nobuhiro
• Hase Yoko

Classifications

• H01M12/06

  with one metallic and one gaseous electrode · CPC title

• H01M10/05

  Accumulators with non-aqueous electrolyte (H01M10/39 takes precedence) · CPC title

• H01M4/13 Primary

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01M4/405

  Alloys based on lithium · CPC title

• H01M10/0562

  Solid materials · CPC title