Fuel cell system with interconnect

Patent metadata

Field	Value
Publication number	US-10050285-B2
Application number	US-201514815297-A
Country	US
Kind code	B2
Filing date	Jul 31, 2015
Priority date	Jun 15, 2011
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

The present invention includes a fuel cell system having a plurality of adjacent electrochemical cells formed of an anode layer, a cathode layer spaced apart from the anode layer, and an electrolyte layer disposed between the anode layer and the cathode layer. The fuel cell system also includes at least one interconnect, the interconnect being structured to conduct free electrons between adjacent electrochemical cells. Each interconnect includes a primary conductor embedded within the electrolyte layer and structured to conduct the free electrons.

First claim

What is claimed is:

1. A fuel cell system comprising:
an electrolyte;
a first electrochemical cell having a first anode and a first cathode spaced apart in a first direction from said first anode by said electrolyte, said electrolyte being structured to pass oxygen ions in the first direction from said first cathode to said first anode;
a second electrochemical cell having a second anode and a second cathode spaced apart in the first direction from said second anode by said electrolyte, said electrolyte being structured to pass oxygen ions in the first direction from said second cathode to said second anode; and
an interconnect structured to conduct a flow of electrons from said first anode to said second cathode, said interconnect including:
a blind primary conductor disposed in said electrolyte and configured to conduct the flow of electrons in a second direction different from the first direction;
a first blind auxiliary conductor structured to conduct the flow of electrons between said first anode and said blind primary conductor; and
a second blind auxiliary conductor structured to conduct the flow of electrons between said blind primary conductor and said second cathode.

2. The fuel cell system of claim 1 , further comprising an anode conductive layer adjoining said first anode; and a cathode conductive layer adjoining said second cathode, wherein at least one of said first blind auxiliary conductor and said second blind auxiliary conductor is formed of the same material as a corresponding one of said anode conductive layer and said cathode conductive layer.

3. A fuel cell system comprising:
an electrolyte;
a first electrochemical cell having a first anode and a first cathode spaced apart in a first direction from said first anode by said electrolyte, said electrolyte being structured to pass oxygen ions in the first direction from said first cathode to said first anode;
a second electrochemical cell having a second anode and a second cathode spaced apart in the first direction from said second anode by said electrolyte, said electrolyte being structured to pass oxygen ions in the first direction from said second cathode to said second anode; and
an interconnect structured to conduct a flow of electrons from said first anode to said second cathode, said interconnect including a blind primary conductor disposed in said electrolyte and configured to conduct the flow of electrons in a second direction different from the first direction,
wherein the second direction is substantially perpendicular to the first direction,
wherein said second anode is spaced apart from said first anode in a third direction substantially perpendicular to the first direction, wherein second direction is also substantially perpendicular to said third direction.

Assignees

• Lg Fuel Cell Systems Inc

Inventors

• Liu Zhien

Classifications

• H01M8/0202 Primary

  Collectors; Separators, e.g. bipolar separators; Interconnectors · CPC title

• Y02E60/525

  Cross-Sectional Technologies · mapped topic

• H01M8/0256

  Vias, i.e. connectors passing through the separator material · CPC title

• H01M8/0217

  Complex oxides, optionally doped, of the type AMO3, A being an alkaline earth metal or rare earth metal and M being a metal, e.g. perovskites · CPC title

• H01M8/2425

  High-temperature cells with solid electrolytes · CPC title