Research Papers

Fabrication and Demonstration of 1 kW Class SOFC Stack and System for Residential Power Generation Application

[+] Author and Article Information
Young-Sung Yoo

 Korea Electric Power Research Institute (KEPRI), 103-16 Munji-Dong, Yuseong-Gu, Daejeon 305-380, Koreayungsung@kepri.re.kr

Taehee Lee, Jin Hyeok Choi, Tae-Sung Park, Je-Myung Oh, Chong-Young Kim

 Korea Electric Power Research Institute (KEPRI), 103-16 Munji-Dong, Yuseong-Gu, Daejeon 305-380, Korea

J. Fuel Cell Sci. Technol 6(2), 021008 (Feb 24, 2009) (5 pages) doi:10.1115/1.2971129 History: Received June 14, 2007; Revised April 01, 2008; Published February 24, 2009

The planar type 1 kW class solid oxide fuel cell (SOFC) stack using metallic interconnects such as ferritic stainless steel has been developed for application in a residential power generation system. For the intermediate temperature operation of the SOFC, a higher performance of anode-supported single cells of 10×10cm2 with a thin electrolyte layer of yttria-stabilized zirconia were fabricated by slurry coating, and their performances were improved by a microstructure-controlled anode substrate and by introducing alternative cathode materials. The thicknesses of the electrolyte and the cathode layers were about 20μm and 40μm, respectively. I-V and ac impedance characteristics of single cells were evaluated at an intermediate temperature (650800°C) by using hydrogen gas as fuel. The maximum power density of the 10×10cm2 anode-supported cells was about 0.32W/cm2 at 750°C and 0.2W/cm2 at 650°C. In this work a 1 kW class SOFC stack composed of 37 cells (10×10cm2) was successfully manufactured and a SOFC system with balance of plant (BOP) (reformer, heat exchanger, catalytic burner, etc.) integrated for combined heat and power. The system designed for power generation by using a natural gas as fuel can concurrently produce electricity at a SOFC stack and hot water from recuperating heat. The system showed a maximum dc output of 1.3kWe. Detailed status and experimental results of the 1 kW SOFC system will be discussed in this paper.

Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Anode-supported single cells (5×5 cm2, 10×10 cm2, and 15×15 cm2) developed in this work

Grahic Jump Location
Figure 2

Cross section view of single cells composed of (a) the LSCF/YSZ/(Ni-YSZ) normal cell and (b) the LSCF/YSZ/FL(Ni-YSZ) functional layered cell in the anode

Grahic Jump Location
Figure 3

Performance of four-cell short stack built-up with 10×10 cm2 single cells of LSCF/YSZ/FL(Ni-YSZ)

Grahic Jump Location
Figure 4

1 kW class 37 cell stack

Grahic Jump Location
Figure 6

BOPs of the 1 kW SOFC system (10)

Grahic Jump Location
Figure 8

1 kW class 50 cell stack (second generation, under installation)

Grahic Jump Location
Figure 5

1 kW SOFC system for demonstration (10)

Grahic Jump Location
Figure 7

I-V-P output of 37 cell stack (10×10 cm2 area per cell) at 750°C operated with the reformate gas of city gas (10)




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In