Direct electrolysis of CO2 in solid oxide cells supported on ceramic fuel electrodes with straight open pores and coated catalysts

Sun, Le; Zheng, Qifan; Li, Naizhi; Chen, Chusheng; Zhan, Zhongliang

doi:10.1016/j.ssi.2019.115154

Cited by 12 publications

(5 citation statements)

References 39 publications

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“…1 To avoid these problems, ceramic materials with mixed oxygen ionic and electronic conductivities are extensively investigated as alternative cathodes for CO 2 RR. The ceramic cathodes usually have a ABO 3 perovskite structure, including La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3−δ (LSCrM), 5 La x Sr 1−x TiO 3−δ (LST), 6,7 La x Sr 1−x Cr y Fe 1-y O 3−δ (LSCrF), 8 La x Sr 1 − x FeO 3 − δ (LSF), 9 , 1 0 and Sr 2 Fe 1 . 5 Mo 0 .…”

Section: Introductionmentioning

confidence: 99%

“…To avoid these problems, ceramic materials with mixed oxygen ionic and electronic conductivities are extensively investigated as alternative cathodes for CO 2 RR. The ceramic cathodes usually have a ABO 3 perovskite structure, including La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3−δ (LSCrM), La x Sr 1– x TiO 3−δ (LST), , La x Sr 1– x Cr y Fe 1‑y O 3−δ (LSCrF), La x Sr 1– x FeO 3−δ (LSF), , and Sr 2 Fe 1.5 Mo 0.5 O 6−δ (SFM). − Among these, SFM perovskite is of great interest because of its relatively high electronic conductivities in both fuel and air atmospheres . In addition, SFM shows good electrochemical catalytic activity for CO 2 RR.…”

Section: Introductionmentioning

confidence: 99%

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Perovskite Oxyfluoride Ceramic with In Situ Exsolved Ni–Fe Nanoparticles for Direct CO₂ Electrolysis in Solid Oxide Electrolysis Cells

Zhang

Jiang

Han

et al. 2022

ACS Appl. Mater. Interfaces

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Solid oxide electrolysis cell (SOEC) is a potential technique to efficiently convert CO 2 greenhouse gas into valuable fuels. Thus, there is significant interest in developing highly active and stable electrocatalysts for the CO 2 reduction reaction (CO 2 RR). Herein, a Ni and F co-doping strategy is proposed to facilitate the exsolution reaction and form a new cathode, Ni−Fe alloy nanoparticles embedded in ceramic Sr 2 Fe 1.5 Mo 0.5 O 6−δ (SFM) doped with fluorine. F-doping and Ni−Fe exsolution enhance CO 2 adsorption by a factor of 2.4 and increase the surface reaction rate constant (k chem ) for CO 2 RR from 6.79 × 10 −5 to 18.1 × 10 −5 cm s −1 , as well as the oxygen chemical bulk diffusion coefficient (D chem ) from 9.42 × 10 −6 to 19.1 × 10 −6 cm 2 s −1 at 800 °C. Meanwhile, the interfacial polarization resistance (R p ) decreases by 52%, from 0.64 to 0.31 Ω cm 2 . At 800 °C and 1.5 V, an extremely high current density of 2.66 A cm −2 and a stability test over 140 h are achieved for direct CO 2 electrolysis in the SOEC.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Perovskite Oxyfluoride Ceramic with In Situ Exsolved Ni–Fe Nanoparticles for Direct CO₂ Electrolysis in Solid Oxide Electrolysis Cells

Zhang

Jiang

Han

et al. 2022

ACS Appl. Mater. Interfaces

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“…This performance was competitive when compared with previously reported CO 2 electrolysis results on the composite YSZ-LSCrF cathodes, such as 0.6 A•cm −2 at 1.6 V and 850 °C for randomly structured LSCrF-YSZ composites 23 or 0.42 A•cm −2 at 1.5 V and 800 °C for the YSZ-LSCrF electrodes with straight open pores. 24 Nyquist plots of impedance data in Fig. 6b showed much larger polarization losses than the ohmic resistances at all temperatures, indicating that the electrolysis performance was mainly limited by low catalytic activities of the blank YSZ-LSCrF scaffolds for CO 2 reduction and oxygen evolution reactions.…”

Section: Resultsmentioning

confidence: 96%

Direct CO₂ Electrolysis on Symmetric La_0.8Sr_0.2Cr_0.5Fe_0.5O_3−δ-Zr_0.84Y_0.16O_2−δ Electrode-Supported Solid Oxide Electrolysis Cells

Cui

Wang

Tong

et al. 2021

J. Electrochem. Soc.

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La0.8Sr0.2Cr0.5Fe0.5O3−δ (LSCrF) is a mixed ionic and electronic conductor with excellent stability in both reducing and oxidizing atmospheres. Herein, we prepared a symmetric tri-layer structure of “porous YSZ-LSCrF ∣ dense YSZ ∣ porous YSZ-LSCrF” by the tape casting and lamination techniques. Porous scaffolds of 80 wt% LSCrF − 20 wt% YSZ showed good conductivities and reasonably high performance for direct CO2 electrolysis with a current density of 0.84 A·cm−2 at 850 °C. Infiltrating Sm0.2Ce0.8O2−δ (SDC) catalysts into both porous scaffolds enhanced their catalytic activities for CO2 reduction and oxygen evolution reactions, yielding an increased electrolysis current density of 1.3 A·cm−2 at 850 °C and 1.5 V. Impedance measurements showed a pronounced decrease in the total interfacial polarization resistance at 1.5 V, i.e., 0.34 vs 0.66 Ω·cm2. In addition, these symmetric cells exhibited good short-term stability at various voltages from 1.0 to 1.6 V.

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“…This strategy successfully achieved the best performance after 100 h of high-temperature operation. 20 The working temperature of the CO 2 reduction with SOEC is generally higher than 800 °C, and the applied potential is normally more than 1.2 V. 21,22 Therefore, electrolysis at high temperatures would easily result in material instability and deactivation. For the SOEC with the dysprosium doping effect of perovskite oxide as the electrode material, there are the following studies: As an approach to develop the atmospheric adaptive materials, the dysprosium doping strategy was applied to both air and fuel electrodes for SOEC.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Reduction of CO₂ with Exsolved Metal–Oxide Interfaces in a Proton-Conducting Solid Oxide Electrolyzer

Zhang

Xie

2022

Energy Fuels

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A large amount of carbon dioxide emissions have caused a greenhouse effect and even disrupted the global ecological balance. Therefore, it is urgent and significant to achieve emission reduction of CO 2 . The use of electrochemistry to reduce carbon dioxide into valuable chemicals and fuels is a sustainable strategy. Here, we present the electrochemical reduction of CO 2 into CO in a proton-conducting solid oxide electrolyzer at a low temperature. We exsolve the active metal−oxide interfaces Ni x Cu 1−x − NbTi 0.4 Mn 0.1 O 4−δ (NTMO) in a composite cathode by a synergistic doping strategy to increase the length and tailor the composition of the active interfaces and, hence, to promote CO 2 reduction. By adjustment of the ratio of the nickel−copper alloy at the metal−oxide interface, it is found that the best performance can appear with an applied voltage of 0.8 V under the composition of Ni 0.5 Cu 0.5 −NTMO. A remarkable current efficiency of 99.8% is achieved with CO production at 0.71 mL min −1 cm −2 at a temperature as low as 600 °C. This illustrates the application prospects of electrochemical reduction of CO 2 in a solid oxide electrolyzer through interface engineering.

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Direct electrolysis of CO2 in solid oxide cells supported on ceramic fuel electrodes with straight open pores and coated catalysts

Cited by 12 publications

References 39 publications

Perovskite Oxyfluoride Ceramic with In Situ Exsolved Ni–Fe Nanoparticles for Direct CO₂ Electrolysis in Solid Oxide Electrolysis Cells

Perovskite Oxyfluoride Ceramic with In Situ Exsolved Ni–Fe Nanoparticles for Direct CO₂ Electrolysis in Solid Oxide Electrolysis Cells

Direct CO₂ Electrolysis on Symmetric La_0.8Sr_0.2Cr_0.5Fe_0.5O_3−δ-Zr_0.84Y_0.16O_2−δ Electrode-Supported Solid Oxide Electrolysis Cells

Electrochemical Reduction of CO₂ with Exsolved Metal–Oxide Interfaces in a Proton-Conducting Solid Oxide Electrolyzer

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Direct electrolysis of CO2 in solid oxide cells supported on ceramic fuel electrodes with straight open pores and coated catalysts

Cited by 12 publications

References 39 publications

Perovskite Oxyfluoride Ceramic with In Situ Exsolved Ni–Fe Nanoparticles for Direct CO2 Electrolysis in Solid Oxide Electrolysis Cells

Perovskite Oxyfluoride Ceramic with In Situ Exsolved Ni–Fe Nanoparticles for Direct CO2 Electrolysis in Solid Oxide Electrolysis Cells

Direct CO2 Electrolysis on Symmetric La0.8Sr0.2Cr0.5Fe0.5O3−δ -Zr0.84Y0.16O2−δ Electrode-Supported Solid Oxide Electrolysis Cells

Electrochemical Reduction of CO2 with Exsolved Metal–Oxide Interfaces in a Proton-Conducting Solid Oxide Electrolyzer

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Product

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Perovskite Oxyfluoride Ceramic with In Situ Exsolved Ni–Fe Nanoparticles for Direct CO₂ Electrolysis in Solid Oxide Electrolysis Cells

Perovskite Oxyfluoride Ceramic with In Situ Exsolved Ni–Fe Nanoparticles for Direct CO₂ Electrolysis in Solid Oxide Electrolysis Cells

Direct CO₂ Electrolysis on Symmetric La_0.8Sr_0.2Cr_0.5Fe_0.5O_3−δ-Zr_0.84Y_0.16O_2−δ Electrode-Supported Solid Oxide Electrolysis Cells

Electrochemical Reduction of CO₂ with Exsolved Metal–Oxide Interfaces in a Proton-Conducting Solid Oxide Electrolyzer