JP2016071948A5

JP2016071948A5 -

Info

Publication number: JP2016071948A5
Application number: JP2014196877A
Authority: JP
Filing date: 2014-09-26
Publication date: 2017-11-30
Anticipated expiration: 2034-09-26

Claims

An air electrode supplied with oxygen;
An anode supplied with liquid fuel and / or gaseous fuel;
An inorganic solid electrolyte body interposed between the fuel electrode and the air electrode and having hydroxide ion conductivity;
A solid alkaline fuel cell comprising:
The inorganic solid electrolyte is M ²⁺ _1-x M ³⁺ _x (OH) ₂ A ⁿ⁻ _{x / n} · mH ₂ O (wherein M ²⁺ is a divalent cation and M ³⁺ is a trivalent cation). it is a cation, a ^n-is the n-valent anion, n is an integer of 1 or more, x is made of a layered double hydroxide having a basic composition of 0.1 to 0.4) A solid alkaline fuel cell in which the inorganic solid electrolyte body is densified by hydrothermal treatment.

The solid alkaline fuel cell according to claim 1, wherein the inorganic solid electrolyte body does not have liquid permeability and air permeability.

The solid alkaline fuel cell according to claim 1 or 2, wherein the inorganic solid electrolyte body has a relative density of 90% or more.

Among the general ^formula, the ^{M 2+} is ^{Mg ^2+,} include ^{M 3+} is ^{Al ^3+,} ^{A n-is} OH ^- and / or _CO containing ^{3 2-,} according to any one of claims 1 to 3 Solid alkaline fuel cell.

The solid alkaline fuel cell according to any one of claims 1 to 4, wherein the inorganic solid electrolyte body has a plate shape, a membrane shape, or a layer shape.

The solid alkaline fuel cell according to any one of claims 1 to 5, further comprising a porous substrate on one side or both sides of the inorganic solid electrolyte body.

The solid according to claim 6, wherein the inorganic solid electrolyte is in the form of a film or a layer, and the film or layer of the inorganic solid electrolyte is formed on or in the porous substrate. Alkaline fuel cell.

The solid alkaline fuel cell according to claim 7, wherein the porous base material is made of a polymer material, and the inorganic solid electrolyte is formed in the porous base material.

The solid alkaline fuel cell according to claim 8, wherein the polymer material is selected from the group consisting of polystyrene, polyethersulfone, polypropylene, epoxy resin, and polyphenylene sulfide.

The solid alkaline fuel cell according to any one of claims 6 to 8, wherein the porous substrate is made of a material having hydroxide ion conductivity.

The porous substrate is made of a material having no hydroxide ion conductivity, and is provided on the surface of the inorganic solid electrolyte body on the fuel electrode side, and the liquid fuel and alkali metal water are provided on the fuel electrode. The solid alkaline fuel cell according to any one of claims 6 to 9 , wherein a mixed solution with an aqueous oxide solution is supplied.

Wherein the fuel electrode is a liquid fuel is supplied, the solid alkaline fuel cell according to any one of claims 1 to 11.

The solid alkaline fuel cell according to any one of claims 1 to 12 , wherein the liquid fuel is a liquid containing water and / or alcohol.

The solid alkaline fuel cell according to any one of claims 1 to 13 , wherein the liquid fuel contains at least one selected from the group consisting of ethanol, methanol, ethylene glycol, hydrazine hydrate, and ammonia. .