Investigation of Cobalt-Free Cathode Material Ba0.5Sr0.5Fe0.8Cu0.2O3−δ for Micro-Tubular SOFC with Asymmetric Structure Anode

Xiao Zhen Zhang; Yong Qing Wang; Jing Zhang; Qi Bing Chang; Yu Hua Jiang; Jian Er Zhou

doi:10.4028/www.scientific.net/KEM.519.36

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Investigation of Cobalt-Free Cathode Material Ba_0.5Sr_0.5Fe_0.8Cu_0.2O_3−δ for Micro-Tubular SOFC with Asymmetric Structure Anode
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 519Investigation of Cobalt-Free Cathode Material...

Investigation of Cobalt-Free Cathode Material Ba_0.5Sr_0.5Fe_0.8Cu_0.2O_3−δ for Micro-Tubular SOFC with Asymmetric Structure Anode

Abstract:

A cobalt-free perovskite oxide Ba_0.5Sr_0.5Fe_0.8Cu_0.2O_3−δ (BSFCu) is applied as the cathode material for intermediate temperature micro-tubular solid oxide fuel cells (SOFCs) with asymmetric structure anode. The NiO-YSZ hollow fiber anode as support was prepared by the phase inversion technique. The as-prepared fiber anode shows a special asymmetric structure consisting of porous sponge-like structure in the middle and finger-like porous structure on the inner and outer side. Dense thin YSZ electrolyte membrane and SDC transition layer were deposited on the NiO-YSZ hollow fiber anode by a vacuum-assisted dip-coating and co-sintering technique. Laboratory-sized micro-tubular single cells of NiO-YSZ/YSZ+SDC/BSFCu-SDC were tested at 650-750°C with humidified H2 as the fuel and static ambient air as the oxidant. The peak power densities of 437.2, 326.5 and 214.4 mWcm^-2 can be obtained at 750, 700 and 650°C, respectively. The experimental results indicate that the cobalt-free perovskite oxide BSFCu is a promising cathode material candidate for the developed intermediate temperature micro-tubular SOFC with asymmetric hollow fiber anode.

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Key Engineering Materials (Volume 519)

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36-40

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https://doi.org/10.4028/www.scientific.net/KEM.519.36

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Online since:

July 2012

Authors:

Xiao Zhen Zhang, Yong Qing Wang, Jing Zhang, Qi Bing Chang, Yu Hua Jiang, Jian Er Zhou

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Cobalt-Free Perovskite Cathode, Electrochemical Performance, Micro-Tubular Solid Oxide Fuel Cell, Phase Inversion

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