Synthesis and performance of Sm0.9Sr0.1Cr0.5Fe0.5O3 as anode material for SOFCs running on H2S-containing fuel

Xu, Dandan; Zhu, Xiufang; Bu, Yunfei; Han, Yan; Winie, Tan

doi:10.1007/s11581-012-0751-7

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…17 Thus, many researchers keep their work focused on developing Ni-free metal oxides as potential sulfur resistant anodes. One class of them is the lanthanum-, chromium-, and titanium-based single and double perovskites, 18,19 such as La 0.4 Sr 0.6 TiO 3−δ , 20 La 1−x Sr x VO 3−δ , 21 La 0.75 Sr 0.25 Cr 1−x Mn x O 3−δ , 22 Ce 0.9 Sr 0.1 Cr 0.5 Fe 0.5 O 3−δ , 23 and Sr 2 Mg 1−x Mn x MoO 6−δ . 24 These metal oxides display improved sulfur poisoning tolerance with higher critical pH 2 S/pH 2 ratio than Ni-based anodes.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Sulfur Tolerance of Ni-Based Cermet Anodes of Solid Oxide Fuel Cells by Ytterbium-Doped Barium Cerate Infiltration

Hua

Luo

et al. 2016

ACS Appl. Mater. Interfaces

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Conventional anode materials for solid oxide fuel cells (SOFCs) are Ni-based cermets, which are highly susceptible to deactivation by contaminants in hydrocarbon fuels. Hydrogen sulfide is one of the commonly existed contaminants in readily available natural gas and gasification product gases of pyrolysis of biomasses. Development of sulfur tolerant anode materials is thus one of the critical challenges for commercial viability and practical application of SOFC technologies. Here we report a viable approach to enhance substantially the sulfur poisoning resistance of a Ni-gadolinia-doped ceria (Ni-GDC) anode through impregnation of proton conducting perovskite BaCe0.9Yb0.1O3-δ (BCYb). The impregnation of BCYb nanoparticles improves the electrochemical performance of the Ni-GDC anode in both H2 and H2S containing fuels. Moreover, more importantly, the enhanced stability is observed in 500 ppm of H2S/H2. The SEM and XPS analysis indicate that the infiltrated BCYb fine particles inhibit the adsorption of sulfur and facilitate sulfur removal from active sites, thus preventing the detrimental interaction between sulfur and Ni-GDC and the formation of cerium sulfide. The preliminary results of the cell with the BCYb+Ni-GDC anode in methane fuel containing 5000 ppm of H2S show the promising potential of the BCYb infiltration approach in the development of highly active and stable Ni-GDC-based anodes fed with hydrocarbon fuels containing a high concentration of sulfur compounds.

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Section: Introductionmentioning

confidence: 99%

Enhancing Sulfur Tolerance of Ni-Based Cermet Anodes of Solid Oxide Fuel Cells by Ytterbium-Doped Barium Cerate Infiltration

Hua

Luo

et al. 2016

ACS Appl. Mater. Interfaces

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Investigation of Ce0.9Sr0.1Cr0.5Co0.5O3−δ as the anode material for solid oxide fuel cells fueled with H2S

Zhu

Shi

Ai-ping

et al. 2013

Ionics

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La_0.4Ba_0.6Fe_0.8Zn_0.2O_3−δas cathode in solid oxide fuel cells for simultaneous NO reduction and electricity generation

Zhou

et al. 2013

Environmental Technology

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A perovskite-type oxide La(0.4)Ba(0.6)Fe(0.8)Zn(0.2)O(3-delta) (LBFZ) was investigated as the cathode material for simultaneous NO reduction and electricity generation in solid oxide fuel cells (SOFCs). The microstructure of LBFZ was demonstrated by X-ray diffraction and scanning electron microscopy. The results showed that a single cubic perovskite LBFZ was formed after calcined at 1100 degrees C. Meanwhile, the solid-state reaction between LBFZ and Ce(0.8)Sm(0.2)O(1.9) (SDC) at 900 degrees C was negligible. To measure the electrochemical properties, SOFC units were constructed with Sm(0.9)Sr(0.1)Cr(0.5)Fe(0.5)O3 as the anode, SDC as the electrolyte and LBFZ as the cathode. The maximum power density increased with the increasing NO concentration and temperature. The cell resistance is mainly due to the cathodic polarization resistance.

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Synthesis and performance of Sm0.9Sr0.1Cr0.5Fe0.5O3 as anode material for SOFCs running on H2S-containing fuel

Cited by 3 publications

References 20 publications

Enhancing Sulfur Tolerance of Ni-Based Cermet Anodes of Solid Oxide Fuel Cells by Ytterbium-Doped Barium Cerate Infiltration

Enhancing Sulfur Tolerance of Ni-Based Cermet Anodes of Solid Oxide Fuel Cells by Ytterbium-Doped Barium Cerate Infiltration

Investigation of Ce0.9Sr0.1Cr0.5Co0.5O3−δ as the anode material for solid oxide fuel cells fueled with H2S

La_0.4Ba_0.6Fe_0.8Zn_0.2O_3−δas cathode in solid oxide fuel cells for simultaneous NO reduction and electricity generation

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Synthesis and performance of Sm0.9Sr0.1Cr0.5Fe0.5O3 as anode material for SOFCs running on H2S-containing fuel

Cited by 3 publications

References 20 publications

Enhancing Sulfur Tolerance of Ni-Based Cermet Anodes of Solid Oxide Fuel Cells by Ytterbium-Doped Barium Cerate Infiltration

Enhancing Sulfur Tolerance of Ni-Based Cermet Anodes of Solid Oxide Fuel Cells by Ytterbium-Doped Barium Cerate Infiltration

Investigation of Ce0.9Sr0.1Cr0.5Co0.5O3−δ as the anode material for solid oxide fuel cells fueled with H2S

La0.4Ba0.6Fe0.8Zn0.2O3−δas cathode in solid oxide fuel cells for simultaneous NO reduction and electricity generation

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La_0.4Ba_0.6Fe_0.8Zn_0.2O_3−δas cathode in solid oxide fuel cells for simultaneous NO reduction and electricity generation