Atmosphere dependence of anode reaction of intermediate temperature steam electrolysis using perovskite type proton conductor

Sakai, Takaaki; Arakawa, Keita; Ogushi, Masako; Ishihara, Tatsumi; Matsumoto, Hiroshige; Okuyama, Yuji

doi:10.1007/s10008-015-2808-9

Cited by 7 publications

(2 citation statements)

References 17 publications

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“…9,21,22 Nonetheless, systematic investigations of the electrode reactions are still scarce. 23,24 In this study, the reaction orders of the anodic polarization resistances with respect to oxygen and water partial pressures were determined by means of electrochemical impedance spectroscopy for the cells comprising the BaZr 0.4 Ce 04 Y 0.2 O 3−δ electrolyte and commonly-used…”

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confidence: 99%

Analysis of the Anode Reaction of Solid Oxide Electrolyzer Cells with BaZr_0.4Ce_0.4Y_0.2O_3-_δElectrolytes and Sm_0.5Sr_0.5CoO_3-_δAnodes

Kobayashi

Kuroda

Jeong

et al. 2018

J. Electrochem. Soc.

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Anodic reaction pathways in proton-conducting solid oxide electrolyzer cells (H + −SOECs) were investigated using electrochemical impedance spectroscopy with a cell structure of Sm 0.5 Sr 0.5 CoO 3 (anode) | BaZr 0.4 Ce 0.4 Y 0.2 O 3-δ | Pt (cathode). Densely sintered BaZr 0.4 Ce 0.4 Y 0.2 O 3-δ ceramics (>97% relative density) were fabricated by a reactive sintering process with a 2 mol% Zn(NO 3 ) 2 additive and were applied as the electrolyte. The impedance spectra were measured while the oxygen (p O2 ) and water partial pressures (p H2O ) in the anode side were systematically varied, which revealed that the SOECs have two polarization resistances at the anode side, one proportional to p O2 −1/4 and p H2O 0 and another insensitive to p O2 and p H2O . A comparison between the experimental results and elementary step modeling revealed that the actual anode reactions could be described by the reverse mode H + -SOFC cathode reactions, and, thus, the elementary steps dominating the anodic polarization resistance were assigned.

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confidence: 99%

Analysis of the Anode Reaction of Solid Oxide Electrolyzer Cells with BaZr_0.4Ce_0.4Y_0.2O_3-_δElectrolytes and Sm_0.5Sr_0.5CoO_3-_δAnodes

Kobayashi

Kuroda

Jeong

et al. 2018

J. Electrochem. Soc.

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“…Band D reflects the disorder in the structure of the deposited carbon and band G is due to C-C stretching that is common in all sp 2hybridized carbons. 37 The relative intensity ratio of I D /I G , which is defined as R, is usually used to evaluate the graphitization degree of carbon. 38 The carbon with a higher R value shows a lower degree of graphitization.…”

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confidence: 99%

Improved Performance of Ni-Mo Based Anode for Direct Methanol Solid Oxide Fuel Cells with the Addition of Rare Earth Oxides

Fang

Hou

et al. 2017

J. Electrochem. Soc.

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La 2 O 3 and Sm 2 O 3 are added into Ni-Mo-Ce 0.8 Sm 0.2 O 1.9 (SDC) as anodes of solid oxide fuel cells with methanol as fuel. The rare earth oxides improve the catalytic oxidation of the fuel, resulting in the decrease of anodic polarization resistance. The single cell with La 2 O 3 -Ni-Mo-SDC as the anode and SDC-carbonate composite as the electrolyte exhibits a maximum power density of 765 mW cm −2 at 700 • C. The oxides in the anodes also improve the stability of single cells due to the accelerated oxidation of the deposited carbon and the suppression of the deposition of carbon with a high graphitization degree.

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Membranes Technologies for Efficient CO ₂ Capture–Conversion

Remiro‐Buenamañana

Navarrete

García‐Fayos

et al. 2021

Engineering Solutions for CO2 Conversion

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Atmosphere dependence of anode reaction of intermediate temperature steam electrolysis using perovskite type proton conductor

Cited by 7 publications

References 17 publications

Analysis of the Anode Reaction of Solid Oxide Electrolyzer Cells with BaZr_0.4Ce_0.4Y_0.2O_3-_δElectrolytes and Sm_0.5Sr_0.5CoO_3-_δAnodes

Analysis of the Anode Reaction of Solid Oxide Electrolyzer Cells with BaZr_0.4Ce_0.4Y_0.2O_3-_δElectrolytes and Sm_0.5Sr_0.5CoO_3-_δAnodes

Improved Performance of Ni-Mo Based Anode for Direct Methanol Solid Oxide Fuel Cells with the Addition of Rare Earth Oxides

Membranes Technologies for Efficient CO ₂ Capture–Conversion

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Atmosphere dependence of anode reaction of intermediate temperature steam electrolysis using perovskite type proton conductor

Cited by 7 publications

References 17 publications

Analysis of the Anode Reaction of Solid Oxide Electrolyzer Cells with BaZr0.4Ce0.4Y0.2O3-δElectrolytes and Sm0.5Sr0.5CoO3-δAnodes

Analysis of the Anode Reaction of Solid Oxide Electrolyzer Cells with BaZr0.4Ce0.4Y0.2O3-δElectrolytes and Sm0.5Sr0.5CoO3-δAnodes

Improved Performance of Ni-Mo Based Anode for Direct Methanol Solid Oxide Fuel Cells with the Addition of Rare Earth Oxides

Membranes Technologies for Efficient CO 2 Capture–Conversion

Contact Info

Product

Resources

About

Analysis of the Anode Reaction of Solid Oxide Electrolyzer Cells with BaZr_0.4Ce_0.4Y_0.2O_3-_δElectrolytes and Sm_0.5Sr_0.5CoO_3-_δAnodes

Analysis of the Anode Reaction of Solid Oxide Electrolyzer Cells with BaZr_0.4Ce_0.4Y_0.2O_3-_δElectrolytes and Sm_0.5Sr_0.5CoO_3-_δAnodes

Membranes Technologies for Efficient CO ₂ Capture–Conversion