Fabrication and Characterization of High Performance Intermediate Temperature Micro-Tubular Solid Oxide Fuel Cells. (30th May 2017)

• Record Type: Journal Article
• Authors: Ren, Chunlei; Gan, Yun; Lee, Myongjin; Yang, Chunyang; He, Fei; Jiang, Yanmei; Dong, Guohui; Green, Robert; Xue, Xingjian
• Is Part Of: ECS transactions. Volume 78:Number 1(2017)
• Page Start: 1879
• Page End: 1884
• Publication Date: 2017-05-30
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07801.1879ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : A phase inversion-based dual-layer co-extrusion approach was advanced to fabricate micro-channel array structured micro-tubular solid oxide fuel cells (MT-SOFCs). The inner graphite layer was used as a sacrificial layer to eliminate the middle sponge-like layer and inner surface dense skin layer, which were normally formed using the single layer extrusion method. The fuel/gas permeability of such an anode substrate Ni-Ce0.8 Sm0.2 O1.9 (Ni-SDC) was ~9 times that of an anode substrate fabricated using the phase inversion-based single layer extrusion method. The open circuit voltages (OCVs) of the corresponding cell Ni-SDC/SDC/PrBaCo2 O5+δ were 0.89V – 0.85V at 500 – 600 o C, much higher than those of other SDC electrolyte based MT-SOFCs. The peak power density of the cell was ~1484 mW cm -2 at 600 °C, approximately 1.5 times that of a similar cell with an anode substrate fabricated from the single layer extrusion method.