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Ding J.,Zhongkai University of Agriculture and Engineering | Liu J.,South China University of Technology | Liu J.,The Key Laboratory of Enhanced Heat Transfer and Energy Conversation | Yin G.,Zhongkai University of Agriculture and Engineering
Journal of Membrane Science

A novel low-temperature anode-supported cone-shaped tubular solid oxide fuel cell (SOFC) and segmented-in-series (SIS) SOFC stack based on gadolinia-doped ceria (GDC) membrane which is fabricated by dip coating technique are developed in this study.The single cell, NiO-GDC/GDC (15μm)/BSCF-GDC, shows an open-circuit voltage (OCV) of 0.90V at 400°C and exhibits maximum power densities of 17, 49, 129, 268 and 429mWcm -2 at 400, 450, 500, 550 and 600°C, respectively, using moist hydrogen (50mlmin -1) as fuel and ambient air as oxidant. A two-cell-stack based on the above-mentioned cone-shaped tubular anode-supported SOFC is fabricated. And its typical operating characteristics are investigated. The results show that the two-cell-stack presents an open circuit voltage (OCV) of about 1.86V at 400°C and an output power of 0.55W (at 0.4A and 1.4V) at 550°C. This indicates that the anode-supported cone-shaped tubular SIS-SOFC stack based on GDC membrane is highly promising for low temperature SOFC of portable applications. © 2011 Elsevier B.V. Source

Bai Y.,South China University of Technology | Bai Y.,The Key Laboratory of Enhanced Heat Transfer and Energy Conversation | Bai Y.,New Energy Technology for Guangdong Universities | Wang C.,South China University of Technology | And 11 more authors.
Journal of Power Sources

Operation of cone-shaped anode-supported segmented-in-series solid oxide fuel cell (SIS-SOFC) stack directly on methane is studied. A cone-shaped solid oxide fuel cell stack is assembled by connecting 11 cone-shaped anode-supported single cells in series. The 11-cell-stack provides a maximum power output of about 8 W (421.4 mW cm-2 calculated using active cathode area) at 800 °C and 6 W (310.8 mW cm-2) at 700 °C, when operated with humidified methane fuel. The maximum volumetric power density of the stack is 0.9 W cm-3 at 800 °C. Good stability is observed during 10 periods of thermal cycling test. SEM-EDX measurements are taken for analyzing the microstructures and the coking degrees. © 2010 Elsevier B.V. All rights reserved. Source

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