Improvement of Ni/SDC anode by alkaline earth metal oxide addition for direct methane–solid oxide fuel cells

Asamoto, Makiko; Miyake, Shingo; Sugihara, Kazunari; Yahiro, Hidenori

doi:10.1016/j.elecom.2009.05.042

Cited by 61 publications

(37 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 126 , 127 ] Stable SOFC operations were achieved in Sn-impregnated Ni − YSZ anodes, with dry CH 4 and C 8 H 18 for 15 h [ 96 ] and wet CH 4 for 40 [ 128 ] and 110 h. [ 97 ] Ceria and ceria-based oxygen ion conductors are effective in carbon removal and hydrocarbon reforming because of their higher catalytic activity than YSZ [ 129 ] and the electronic leakage under reducing atmospheres. [ 103 ] Doped/pure ceria impregnated Ni − YSZ anodes survived in dry CH 4 at 800 ° C [ 83 ] and 850 ° C, [ 130 ] and wet CH 4 at 600 [ 131 ] and 800 ° C. [ 132 ] Alkaline earth metal oxides, especially CaO [ 88 ] and BaO, [ 133 , 134 ] were effective in carbon removal.…”

Section: Copper-based Cermet Anodesmentioning

confidence: 99%

Solid Oxide Fuel Cell Anode Materials for Direct Hydrocarbon Utilization

Chan

Liu

et al. 2012

Advanced Energy Materials

280

159

View full text Add to dashboard Cite

Solid oxide fuel cells (SOFC) are highly efficient energy conversion devices with the advantage of directly utilizing hydrocarbon fuels. Starting with a short introduction about the fuel challenges and early achievements in this field, this review paper focuses on advances in oxygen‐ion conducting electrolyte‐based SOFC during the last 15 years. Robust anodes immune to carbon deposition are a prerequisite for direct hydrocarbon SOFC. In this paper, direct hydrocarbon SOFC anode materials are classified into three general categories: Ni‐cermet, Cu‐cermet, and oxide‐based anodes. Oxide anodes are further classified in terms of their crystalline structures, namely fluorite, rutile, tungsten bronze, pyrochlore, perovskite, and double perovskite. Achievements and recent advances on these SOFC anodes are reviewed and discussed. The concluding remarks summarize the pros and cons of direct hydrocarbon SOFC anode materials along with the perspective of future research trends.

show abstract

Section: Copper-based Cermet Anodesmentioning

confidence: 99%

Solid Oxide Fuel Cell Anode Materials for Direct Hydrocarbon Utilization

Chan

Liu

et al. 2012

Advanced Energy Materials

280

159

View full text Add to dashboard Cite

show abstract

“…For example, Sm 0.2 Ce 0.8 O 1.9 (SDC) and Gd 0.2 Ce 0.8 O 1.9 (GDC) are used as a potential electrolyte for intermediate‐temperature solid oxide fuel cell (IT‐SOFC) using hydrocarbon as fuel and air as oxidant gas in the temperature range of 500°–800°C, which display a better performance than YSZ under similar operating conditions. Therefore, REDC is now widely accepted as IT‐SOFC material 7–11 . However, the higher sintering temperature (above 1350°C) of REDC ceramics prevents their practical application in IT‐SOFC 12 .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, REDC is now widely accepted as IT-SOFC material. [7][8][9][10][11] However, the higher sintering temperature (above 13501C) of REDC ceramics prevents their practical application in IT-SOFC. 12 In the last decade, in order to lower sintering temperature of REDC ceramics (mainly SDC), many attempts have been carried out.…”

Section: Introductionmentioning

confidence: 99%

Processing and Characterization of Bi2O3 and Sm2O3 Codoped CeO2 Electrolyte for Intermediate-Temperature Solid Oxide Fuel Cell

Zhao

2011

Journal of the American Ceramic Society

View full text Add to dashboard Cite

A series of ceria‐based solid solution electrolyte, Bi2O3 and Sm2O3 codoped CeO2 (Sm0.2−xBixCe0.8O1.9, x=0, 0.05, 0.10, 0.15, 0.20), were synthesized via a Pechini‐type gel route. The phase composition was analyzed by the X‐ray diffraction. Present study shows that Sm0.2−xBixCe0.8O1.9 is exceedingly stable as a cubic phase in all temperature range. Starting from the Sm0.2−xBixCe0.8O1.9 powder with specific surface area of 23.057 m2/g and using bismuth oxide as sintering aid, the sintering behavior investigation demonstrates that the Sm0.2−xBixCe0.8O1.9 green compacts can be densified to nearly theoretical density at 1300°C for 3 h. The very low sintering temperature prevents excessive grain growth during the heating, which is crucial for obtaining microcrystalline ceramics. In the temperature range of 500°–800°C, AC impedance spectra indicate that the Sm0.2−xBixCe0.8O1.9 has much higher ionic conductivity than SDC (Sm0.2Ce0.8O1.9), and that the highest conductivity value is 3.982 S/m at 750°C. The increased conductivity implies that the effect of cell volume and polarization, associated with Bi3+, played an important role in the anion transport of the materials.

show abstract

“…Here, Raman spectroscopy revealed the presence of surface -OH groups on these Ba-containing oxides, and the coking resistance capabilities of these oxides can generally be attributed to the water adsorption capacities on these materials. In addition, earlier studies of reforming catalysts also reported that alkaline earth oxides (e.g., MgO, CaO, SrO, and BaO) have a high tendency for water and CO 2 adsorption and therefore can promote the reformation of carbonaceous species [66][67][68]. Furthermore, DFT simulation studies validated the fact that Ba-based perovskites are capable of the dissociative adsorption of water as a result of the low work function and high Fermi basicity of the BaO-terminated crystal faces [9,69,70].…”

Section: Study Of Coking-resistant Catalystsmentioning

confidence: 99%

In Situ and Surface-Enhanced Raman Spectroscopy Study of Electrode Materials in Solid Oxide Fuel Cells

Blinn

Chen

et al. 2018

Electrochem. Energ. Rev.

View full text Add to dashboard Cite

Solid oxide fuel cells (SOFCs) represent next-generation energy sources with high energy conversion efficiencies, low pollutant emissions, good flexibility with a wide variety of fuels, and excellent modularity suitable for distributed power generation. As an electrochemical energy conversion device, the SOFC's performance and reliability depend sensitively on the catalytic activity and stability of electrode materials. To date, however, the development of electrode materials and microstructures is still based largely on trial-and-error methods because of the inadequate understanding of electrode process mechanisms. Therefore, the identification of key descriptors/properties for electrode materials or functional heterogeneous interfaces, especially under in situ/operando conditions, may provide guidance for the design of optimal electrode materials and microstructures. Here, Raman spectroscopy is ideally suited for the probing and mapping of chemical species present on electrode surfaces under operating conditions. And to boost the sensitivity toward electrode surface species, the surfaceenhanced Raman spectroscopy (SERS) technique can be employed, in which thermally robust SERS probes (e.g., Ag@ SiO 2 core-shell nanoparticles) are designed to make in situ/operando analysis possible. This review summarizes recent progresses in the investigation of SOFC electrode materials through Raman spectroscopic techniques, including topics of early stage carbon deposition (coking), coking-resistant anode modification, sulfur poisoning, and cathode degradation. In addition, future perspectives for utilizing the in situ/operando SERS for investigations of other electrochemical surfaces and interfaces are also discussed.

show abstract

Improvement of Ni/SDC anode by alkaline earth metal oxide addition for direct methane–solid oxide fuel cells

Cited by 61 publications

References 11 publications

Solid Oxide Fuel Cell Anode Materials for Direct Hydrocarbon Utilization

Solid Oxide Fuel Cell Anode Materials for Direct Hydrocarbon Utilization

Processing and Characterization of Bi2O3 and Sm2O3 Codoped CeO2 Electrolyte for Intermediate-Temperature Solid Oxide Fuel Cell

In Situ and Surface-Enhanced Raman Spectroscopy Study of Electrode Materials in Solid Oxide Fuel Cells

Contact Info

Product

Resources

About