Unit cell of flat solid oxide fuel cell and fuel cell stack comprising the same
AssigneeCentral Research Institute of Electric Power Industry
InventorHibiki Itoh
Life of this patent
Estimating the term…
Abstract
A cell of a flat plate solid oxide fuel cell has a first electrode member of porous material having pores through which all of a fuel gas or air passes. An electrolyte film is on either a front or a back surface of the first electrode member. A second electrode member is on the electrolyte film and a separator film is on the other surface of the first electrode member. The first electrode member is either a fuel electrode or an air electrode and the second electrode member is the other. Part of the electrolyte film and/or part of the separator film form seal portions which cover side surfaces between the electrolyte film and the separator film and function as gas seal films.
Claims13
A single cell of a flat plate type solid oxide fuel cell comprising:
- a first electrode member consisting of a porous substrate;
- an electrolyte film formed on either a front surface or a back surface of said first electrode member;
- a second electrode member formed on said electrolyte film;
- a separator film formed on the other surface of said first electrode member;
- said first electrode member being one of a fuel electrode and an air electrode and said second electrode member being the other one of said fuel electrode and said air electrode;
- and
- a seal portion covering all side surfaces of said first electrode member.
A single cell of a flat plate type solid oxide fuel cell comprising:
- a first electrode member consisting of a porous substrate through which a fuel gas or air passes;
- an electrolyte film formed on either a front surface or a back surface of said first electrode member;
- a second electrode member formed on said electrolyte film;
- and a separator film formed on the other surface of said first electrode member, wherein said first electrode member is one of a fuel electrode and an air electrode, and said second electrode member is the other one of said fuel electrode and said air electrode, and said first electrode member itself being as a sole gas flow path, both front and back surfaces of said first electrode member being covered with said electrolyte film and said separator film respectively;
- at least one of a part of said electrolyte film and a part of and/or said separator film being a seal portion which covers a part of side surfaces between said electrolyte film and said separator film of said first electrode member and functions as a gas seal film, said seal portion including a side film portion which covers each entire area of side surfaces of one of two pairs of opposed side surfaces of said first electrode member and seals said covered side surfaces to prevent a gas from escaping.
A single cell of a flat plate type solid oxide fuel cell comprising:
- a single cell having electrolyte;
- a first electrode member and a second electrode member with said electrolyte sandwiched therebetween;
- and a separator arranged on a surface side opposite to said electrolyte side of one of said first electrode member and said second electrode member, wherein at least one of said first electrode member and second electrode member is formed from a porous substrate through which a fuel gas or air passes, respective said electrolyte and said separator are filmily formed directly to a surface of said electrode member formed from said porous substrate, a front surface and a back surface of said porous substrate are sealed with said electrolyte film and said separator film respectively and a gas inflow/outflow opening is formed to a side surface of said substrate to prevent a gas from escaping, and said electrode member itself is constituted as a gas flow path.
Dependencies are inferred from the claim text.