Direct methane fueled thin film SOFC technology

Patent metadata

Field	Value
Publication number	US-11894563-B2
Application number	US-202117512918-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Dec 28, 2020
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

Described herein are novel alumina substrate-supported thin film SOFCs that may be produced at significantly reduced cost while providing improved robustness, high electrochemical performance, and the capability of effective carbon deposition resistance while still using Ni-cermet as an anode functional layer.

First claim

What is claimed is:

1. A micro-tubular solid oxide fuel cell comprising:
a NiO-SDC anode substrate;
an internal graphite layer;
at least one micro channel forming a micro channel array extending through both the NiO-SDC anode and the internal graphite layer, wherein the internal graphite layer is removed to provide access to the at least one micro channel in the NiO-SDC anode substrate;
an electrolyte outer coating; and
at least one cathode ink applied to the electrolyte outer coating.

2. The fuel cell of claim 1 , wherein the micro channel array is radially aligned with respect to the NiO-SDC anode substrate.

3. The fuel cell of claim 1 , wherein peak power density is at least 1.5 times that of a cell with an anode substrate fabricated from a single layer extrusion method.

4. The fuel cell of claim 1 , further comprising multi-layered microstructures within the fuel cell.

5. The fuel cell of claim 1 , wherein the micro channel array reduces a polarization resistance of the fuel cell.

6. The fuel cell of claim 1 , wherein the fuel cell has an increased fuel utilization rate as compared to a conventional fuel cell.

7. The fuel cell of claim 1 , wherein the fuel cell exhibits gas permeation performance approximately nine times greater than a conventional fuel cell formed from a single layer extrusion method.

8. The fuel cell of claim 1 , wherein the fuel cell exhibits open circuit voltages exceeding those of a conventional fuel cell formed from a single layer extrusion method.

Assignees

• Univ South Carolina

Inventors

• Xue Xingjian
• Ren Chunlei

Classifications

• H01M4/8626 Primary

  characterised by the form · CPC title

• H01M4/8807

  Gas diffusion layers · CPC title

• H01M8/12

  operating at high temperature, e.g. with stabilised ZrO2 electrolyte · CPC title

• H01M2004/8684

  Negative electrodes · CPC title

• H01M2008/1293

  Fuel cells with solid oxide electrolytes · CPC title