Impact of direct butane microtubular solid oxide fuel cells

Sumi, Hiroyuki; Yamaguchi, Toshiaki; Hamamoto, Koichi; Suzuki, Toshio; Fujishiro, Yoshinobu

doi:10.1016/j.jpowsour.2012.07.106

Cited by 44 publications

(24 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result supports the hypothesis that the carbon deposition rate in butane is faster than that in methane for the Ni-zirconia anodes. As reported in the previous paper 22 that the cell with a Ni-Gd doped ceria (Ni-GDC) performed as anode continuously for more than 24 h in butane at S/C = 0.044 and 610°C. Cerium can be reduced from Ce 4+ to Ce 3+ under low oxygen partial pressure and high temperature, 23 which causes the suppres-sion of carbon deposition on the Ni-GDC anode in butane at low S/C ratios.…”

mentioning

confidence: 54%

“…However, the performance of the Ni-ScSZ anode deteriorated rapidly for less than 4 h in butane at S/C = 0.044 in spite of a low operating temperature at 610°C. 22 A large amount of carbon nanofiber was observed on the Ni-ScSZ anode after the direct butane utilization for microtubular SOFCs. This result supports the hypothesis that the carbon deposition rate in butane is faster than that in methane for the Ni-zirconia anodes.…”

mentioning

confidence: 97%

See 1 more Smart Citation

Effect of Operating Temperature on Durability for Direct Butane Utilization of Microtubular Solid Oxide Fuel Cells

et al. 2013

Self Cite

View full text Add to dashboard Cite

The effect of operating temperature on durability was investigated for direct butane utilization using microtubular solid oxide fuel cells (SOFCs). At 710°C, the performance of the Ni-Gd doped ceria (Ni-GDC) anode deteriorated rapidly for less than 2 h in butane fuel with relatively low steam/carbon (S/C) ratio at 0.044 because of a large amount of carbon deposition by butane cracking. The carbon nanofiber grew up from catalysis in the Ni-GDC anode after direct butane utilization at 660°C for 15 h. The carbon deposition rate in wet butane was slower than that in dry butane below 660°C on the Ni-GDC composite, because the oxidation of deposited carbon was also promoted by catalysis in the presence of water. The electric power could be generated continuously for more than 24 h in butane at S/C = 0.044 and relatively low operating temperature at 610°C using the Ni-GDC anode. Decrease in the operating temperature realized high durability against carbon deposition for direct butane utilization of SOFCs using the Ni-GDC anode.

show abstract

mentioning

confidence: 54%

mentioning

confidence: 97%

Effect of Operating Temperature on Durability for Direct Butane Utilization of Microtubular Solid Oxide Fuel Cells

et al. 2013

Self Cite

View full text Add to dashboard Cite

show abstract

“…In particular, the adsorption/desorption and charge transfer processes are enhanced at low temperature for LSCF-GDC composite. (16). In this condition, carbon can be deposited by methane and butane cracking in the equilibrium (17).…”

Section: Resultsmentioning

confidence: 98%

Development of Ceria-Based Microtubular Solid Oxide Fuel Cells

Sumi¹,

Yamaguchi²,

Shimada³

et al. 2015

ECS Trans.

Self Cite

View full text Add to dashboard Cite

It is well known that gadolinia-doped ceria (GDC) has high oxide-ion conductivity for electrolyte, and it improves electrochemical activities for fuel oxidation and oxygen reduction for electrodes of solid oxide fuel cell (SOFC). In this work, we investigated the usage of ceria for cathode, anode and electrolyte of microtubular SOFCs for low temperature operation and direct hydrocarbon utilization.

show abstract

“…4) For stable power generation under direct hydrocarbon utilization in SOFCs, the conditions such as operating temperature, S/C ratio, discharge current and anode thickness are very important. 21) demonstrated rapid start-up and power generation under direct butane utilization using microtubular SOFCs.…”

Section: Introductionmentioning

confidence: 99%

Direct hydrocarbon utilization in microtubular solid oxide fuel cells

Sumi

Yamaguchi

Suzuki

et al. 2015

J. Ceram. Soc. Japan

Self Cite

View full text Add to dashboard Cite

Solid oxide fuel cells (SOFCs) can, in principle, directly use hydrocarbon fuels. However, nickel-stabilized zirconia anode deteriorated rapidly under direct butane utilization due to carbon deposition. The cracking rate is faster, when carbon number is larger and straight chain is longer in methane, propane, i-butane and n-butane. However, microtubular SOFCs with nickelgadolinia doped ceria (Ni-GDC) anode can generate power continuously at 650°C over a period of 100 h in propane and butane, because the Ni-GDC has high catalytic activities of hydrocarbon reforming and carbon oxidation. The Ni-GDC is one of the desirable anodes for direct propane and butane utilization in SOFCs.

show abstract

Impact of direct butane microtubular solid oxide fuel cells

Cited by 44 publications

References 40 publications

Effect of Operating Temperature on Durability for Direct Butane Utilization of Microtubular Solid Oxide Fuel Cells

Effect of Operating Temperature on Durability for Direct Butane Utilization of Microtubular Solid Oxide Fuel Cells

Development of Ceria-Based Microtubular Solid Oxide Fuel Cells

Direct hydrocarbon utilization in microtubular solid oxide fuel cells

Contact Info

Product

Resources

About