Preparation and performance of a Cu–CeO2–ScSZ composite anode for SOFCs running on ethanol fuel

Ye, Xiaofeng; Huang, Bo; Wang, S.R.; Wang, Z.R.; Xiong, Lin; Wen, Tian

doi:10.1016/j.jpowsour.2006.10.056

Cited by 95 publications

(45 citation statements)

References 16 publications

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“…Ye and co-workers studied a Cu-CeO 2 -ScSZ composite, replacing Ni with Cu for current collection (Cu being less active for hydrocarbon cracking than Ni) and CeO 2 for the ethanol steam reforming (ESR) catalysis [15]. Power densities of 0.2-0.25 Wcm -2 were reached at 800°C for a water/EtOH volumic ratio of 2, which corresponds to the values obtained with H 2 at 750°C.…”

Section: Introductionmentioning

confidence: 73%

“…There are several studies dedicated to the performance of SOFC fuelled with a mixture of water and ethanol [2,[11][12][13][14][15][16][17][18][19]. The first results were obtained with standard anode Nicermets, either as electrolyte supported cells [14] or as planar [12] and tubular [2] anode supported cells, all of them with small active areas (≤ 1 cm 2 ).…”

Section: Introductionmentioning

confidence: 99%

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Ethanol internal steam reforming in intermediate temperature solid oxide fuel cell

Diethelm¹,

herle²

2011

Journal of Power Sources

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This study investigates the performance of a standard Ni-YSZ anode supported cell under ethanol steam reforming operating conditions. Therefore, the fuel cell was directly operated with a steam/ethanol mixture (3 to 1 molar). Other gas mixtures were also used for comparison to check the conversion of ethanol and of reformate gases (H 2 , CO) in the fuel cell. The electrochemical properties of the fuel cell fed with 4 different fuel compositions were characterized between 710 and 860°C by I-V and EIS measurements at OCV and under polarization. In order to elucidate the limiting processes, impedance spectra obtained with different gas compositions were compared using the derivative of the real part of the impedance with respect of the natural logarithm of the frequency.Results show that internal steam reforming of ethanol takes place significantly on Ni-YSZ anode only above 760°C. Comparisons of results obtained with reformate gas showed that the electrochemical cell performance is dominated by the conversion of hydrogen. The conversion of CO also occurs either directly or indirectly through the water-gas shift reaction but has a significant impact on the electrochemical performance only above 760°C.

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Section: Introductionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Ethanol internal steam reforming in intermediate temperature solid oxide fuel cell

Diethelm¹,

herle²

2011

Journal of Power Sources

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“…They reported direct, electrochemical oxidation of various hydrocarbons (methane, ethane, 1-butene, n-butane and toluene) at 700 • C and 800 • C. Ye et al 134 explored the performance of a Cu-CeO 2 -ScSZ (scandia-stabilized zirconia) composite anode for a SOFC operating on ethanol fuel. The anode exhibited stable performance for a fuel stream of ethanol and water, without any visible carbon deposition after 50 h.…”

Section: Coking Resistant Anode Materialsmentioning

confidence: 99%

Fundamentals of electro- and thermochemistry in the anode of solid-oxide fuel cells with hydrocarbon and syngas fuels

Hanna

Lee

Shi

et al. 2014

Progress in Energy and Combustion Science

180

110

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“…A vast number of published studies can be summarized with a selection of other anode candidates such as: (a) Ru (Sauvet and Fouletier, 2001;Bebelis et al, 2006;Caillot et al, 2007), (b) Cu (Slater and Irvine, 1999;Park et al, 2000), (c) Fluorite (e.g., Cu-CeO 2 -ScSZ; Ye et al, 2007), (d) Tungsten bronze (e.g., (Ba/Sr/Ca/La) 0.6 M x Nb 1−x O 3−δ , where M=Mg, Ni, Mn, Cr, Fe, In, Ti, Sn;Tao and Irvine, 2004), (e) Pyrochlore (e.g., Gd 2 Ti 2 O 7 ) anode materials (Goodenough and Huang, 2007;Sun and Stimming, 2007;Tsipis and Kharton, 2008), (f) LSCM (e.g., La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3−δ ) (Sfeir et al, 2001;Liu et al, 2002;Tao and Irvine, 2004;Ruiz-Morales et al, 2007), SrMoO 4 (Smith and Gross, 2011), and other complex perovskites (Xiao et al, 2010), such as double perovskites (e.g., Sr 2 Mg 1−x Mn x MoO 6−δ; Huang et al, 2006 or Sr 2 CoMoO 6; Zhang et al, 2011), chromites (Vashook et al, 2003), and titanates (Li X. et al, 2009). Although most of the above materials are characterized by high carbon resistance, nevertheless, in most of the cases their practical use is inhibited by the poor electrochemical or catalytic activity, the relatively low electronic conduction, the low thermal and chemical stability, the use of prohibitively expensive materials and/or the high cost of processing for their commercial use (Tsipis and Kharton, 2008;Niakolas et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Effect of Au and/or Mo Doping on the Development of Carbon and Sulfur Tolerant Anodes for SOFCs—A Short Review

Niakolas

Neofytidis

Neophytides

2017

Front. Environ. Sci.

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HIGHLIGHTS• The kinetics of CH 4 steam reforming and partial oxidation are determined by the oxidation rate of CH x adsorbed species • The modification of the Ni/YSZ and Ni/GDC with Au and/or Au-Mo results in differentiated structures of atomically dispersed Au and/or Au-Mo at the surface and the bulk of the Ni particles.• At lean S/C NiAu/YSZ selectively oxidizes electrochemically the catalytically produced H 2 and CO, while NiAu/GDC is selective to the direct partial electrochemical oxidation of CH 4 to CO and H 2.• The modified electrodes show significant tolerance to C formation.• Au-Mo modification enhances the intrinsic sulfur tolerance properties of Ni/GDC.The presented work is a short review of the research attempts from our group with collaborators, during the last 15 years, which had as main objective to study and improve the electrocatalytic performance of Ni-based electrode materials for the CH 4 Internal steam Reforming process (ISR.) in Solid Oxide Fuel Cells (SOFCs). In particular, NiO/YSZ and NiO/GDC anode powders were modified with Au and/or Mo nano-particles via different preparation methods. These efforts resulted in anode materials with high tolerance and improved electrocatalytic activity under both carbon forming and sulfur poisoning conditions. The most important findings are being reviewed and critical findings are being highlighted 50 as to stress the key differences in the electrocatalytic performance between Ni/YSZ and Ni/GDC. The possible effects of Au and/or Mo addition on the physicochemical and strucutral properties of the cermets are thoroughly discussed as well as active functional layers in the form of anode SOFC electrodes.

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Preparation and performance of a Cu–CeO2–ScSZ composite anode for SOFCs running on ethanol fuel

Cited by 95 publications

References 16 publications

Ethanol internal steam reforming in intermediate temperature solid oxide fuel cell

Ethanol internal steam reforming in intermediate temperature solid oxide fuel cell

Fundamentals of electro- and thermochemistry in the anode of solid-oxide fuel cells with hydrocarbon and syngas fuels

Effect of Au and/or Mo Doping on the Development of Carbon and Sulfur Tolerant Anodes for SOFCs—A Short Review

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