Electrochemical cell with solid oxide electrolyte and oxygen pump thereof

Spirin, A. V.; Никонов, А. В.; Липилин, А. С.; Paranin, S. N.; Иванов, В. В.; Хрустов, В. Р.; Valentsev, A. V.; Krutikov, V. I.

doi:10.1134/s1023193511050132

Cited by 17 publications

(15 citation statements)

References 3 publications

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“…This value is almost comparable to the oxygen flux of YSZ operating at 800°C. 4) In addition, oxygen permeation tests revealed that the obtained oxygen flux is in good agreement with the theoretical value according to Faraday's law, indicating that LSCFN/ SDC/c-LSBO symmetric cell can separate oxygen from air without any side reaction in the applied voltage range (0.1 to 2 V).…”

supporting

confidence: 78%

“…In general, yttrium stabilized zirconia (YSZ) has been widely used as a solid electrolyte for a long time, and an oxygen pumping device based on YSZ has been reported. 4) However, the high operating temperature (800°C) of the system, which is due to the low oxideionic conductivity of YSZ at lower temperatures, necessitates high power. Hence, for reducing power consumption, it is desirable to develop a new oxide ion conductor with higher ionic conductivity.…”

mentioning

confidence: 99%

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Oxygen pumping based on <i>c</i>-axis-oriented lanthanum silicate ceramics: challenge toward low operating temperature

Watanabe

Ide²,

Kumagai

et al. 2019

J. Ceram. Soc. Japan

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A new electrochemical oxygen separation pump was developed by using c-axis-oriented La 9.66 Si 5.3 B 0.7 O 26.14 (c-LSBO), which has high oxide-ionic conductivity (>10 ¹3 S cm ¹1) up to 300°C. Interfacial resistance between the electrode and c-LSBO was investigated to realize the full potential of LSBO as an oxygen separation material. The formation of a Sm-doped CeO 2 (SDC) thin film (thickness: 300 nm) between the electrode and c-LSBO was effective for suppressing the interfacial resistance. Furthermore, a mixed conductive La 0.6 Sr 0.4 Co 0.78 Ni 0.02 Fe 0.2 O 3¹¤ (LSCFN) was applied to the electrode for enhancing the oxygen reduction/evolution activity on the electrode. The LSCFN/SDC/c-LSBO symmetric cell showed an oxygen permeation flux of 3.5 mL cm ¹2 min ¹1 (1.0 A cm ¹2) at 600°C under an applied DC voltage of 1.5 V; this value was 67 times that of Pt/c-LSBO. This oxygen pump based on the LSCFN/SDC/c-LSBO symmetric cell would find promising application in oxygen separation at intermediate temperatures. Further reduction of the interfacial resistance and polarization resistance of the electrode may decrease the operating temperatures to below 400°C.

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supporting

confidence: 78%

mentioning

confidence: 99%

Oxygen pumping based on <i>c</i>-axis-oriented lanthanum silicate ceramics: challenge toward low operating temperature

Watanabe

Ide²,

Kumagai

et al. 2019

J. Ceram. Soc. Japan

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“…This concept involves the 27 use of a high-temperature electrolyte (see section 5.5). In contrast to high-temperature electrolysis, the oxygen electrode material is deposited on both sides of the membrane [167,168].…”

Section: Oxygen Separatorsmentioning

confidence: 99%

“…CO2-rich mixtures [168]. Due to the fast electrode reaction kinetics, a high current density of 0.6 A cm -2 was reached at a cell voltage below 0.5V in a commercial unit [167]. Furthermore, trials were conducted to separate oxygen in low-temperature PEM mode [169,170].…”

Section: Oxygen Separatorsmentioning

confidence: 99%

Membrane electrolysis—History, current status and perspective

Paidar

Фатеев

Bouzek

2016

Electrochimica Acta

280

137

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Please cite this article as: M.Paidar, V.Fateev, K.Bouzek, Membrane electrolysis − history, current status and perspective, Electrochimica Acta http://dx. AbstractThis review is devoted to membrane electrolysis, in particular utilizing ion-selective membranes, as an important part of both existing and emerging industrial electrochemical processes. It aims to provide fundamental information on the history and development, current status and future perspectives of membrane electrolysis. It aims to provide fundamental information on the history and development, current status and future perspectives of membrane electrolysis. An overview of the history of electromembrane processes is given with the focus on brine electrolysis since it is the predominant electrochemical industrial technology utilizing ion-selective membranes. This is followed by a summary of the wide range of hydrogen-based energy conversion processes with different degrees of maturity, i.e. water electrolysis and fuel cells, which promise to become the next generation of major electromembrane processes. The overview of the state-of-the-art is rounded off by a number of smaller-scale processes utilizing ionically conducting solid electrolytes and ion-selective membranes that are already commercially available. The article concludes by considering potential future developments in this exciting field of electrochemistry.

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“…For example, an oxygen pump based on conventional yttrium doped zirconia (YSZ) electrolyte membrane needs to operate at 800 • C which is provided by a high temperature furnace. Spirin et al 6 have designed an YSZ based device using a YSZ electrolyte (170 µm) with La 0.8 Sr 0.2 MnO 3-δ (LSM) electrodes (20 µm) based stack that was able to produce 150 ml min −1 pure oxygen with an applied power of 50 W at 800 • C. Long term testing demonstrated a 83 ml min −1 oxygen flux rate with <24 W consumed power for 300 h. Conventional electrolyte materials such as YSZ have met the basic requirement of obtaining appreciable oxygen flux. However, the size of the devices is relatively large and the high operating temperature of 800 • C requires a large amount of power.…”

mentioning

confidence: 99%

An Intermediate-Temperature Oxygen Transport Membrane Based on Rare-Earth Doped Bismuth Oxide Dy_0.08W_0.04Bi_0.88O_2-δ

Hong

Fang²,

Zhao

et al. 2017

J. Electrochem. Soc.

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In this work, a ceramic oxygen pump based on dysprosium and tungsten co-doped bismuth oxide (DWSB) was synthesized and characterized. The DWSB oxygen ion conducting electrolyte with a composition of Dy 0.08 W 0.04 Bi 0.88 O 2-δ displayed the highest oxygen ion conductivity and was chemically compatible with the La 0.8 Sr 0.2 MnO 3-δ (LSM) electrode material. A composite electrode was fabricated with DWSB-LSM in the mass fraction of 50:50 exhibiting the lowest polarization resistance with the DWSB electrolyte. In the composite electrode, larger DWSB particles act as backbone for the oxygen transport pathway, while LSM particles deposited on the surface of the DWSB backbone serve as mixed ionic-electronic conductors accelerating surface oxygen exchange. An oxygen flux of 5.9 mL cm −2 min −1 at 650 • C under 1 V applied bias was realized in the DWSB electrolyte (0.75 mm) supported membrane incorporating DWSB-LSM electrodes on feed and permeate sides. Further improvements to the electrochemical performance were achieved by fabricating a thin, electrode supported DWSB membrane (∼12 µm). The current density for the electrode-supported cell was 5.4 Acm −2 under 2 V applied bias at 650 • C which corresponds to an oxygen flux of 17 mL cm −2 min −1. Higher bias voltages were observed to accelerate the electrode reaction process leading to reduced polarization resistance that resulted in a remarkable growth of current density. This intelligent DWSB based oxygen pump is a promising materials system for high performance electrochemical oxygen separation.

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Electrochemical cell with solid oxide electrolyte and oxygen pump thereof

Cited by 17 publications

References 3 publications

Oxygen pumping based on <i>c</i>-axis-oriented lanthanum silicate ceramics: challenge toward low operating temperature

Oxygen pumping based on <i>c</i>-axis-oriented lanthanum silicate ceramics: challenge toward low operating temperature

Membrane electrolysis—History, current status and perspective

An Intermediate-Temperature Oxygen Transport Membrane Based on Rare-Earth Doped Bismuth Oxide Dy_0.08W_0.04Bi_0.88O_2-δ

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Electrochemical cell with solid oxide electrolyte and oxygen pump thereof

Cited by 17 publications

References 3 publications

Oxygen pumping based on <i>c</i>-axis-oriented lanthanum silicate ceramics: challenge toward low operating temperature

Oxygen pumping based on <i>c</i>-axis-oriented lanthanum silicate ceramics: challenge toward low operating temperature

Membrane electrolysis—History, current status and perspective

An Intermediate-Temperature Oxygen Transport Membrane Based on Rare-Earth Doped Bismuth Oxide Dy0.08W0.04Bi0.88O2-δ

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An Intermediate-Temperature Oxygen Transport Membrane Based on Rare-Earth Doped Bismuth Oxide Dy_0.08W_0.04Bi_0.88O_2-δ