Enhanced CO2 electrolysis at metal–oxide interfaces

Li, Jiaming; Ye, Lingting; Xie, Kui

doi:10.1007/s10008-022-05121-1

Cited by 10 publications

(7 citation statements)

References 33 publications

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“…The reason for this change in the electrode conductivity may be due to the decrease in electron charge carriers with the increase in the number of oxygen vacancies at higher temperatures. 45 This phenomenon also demonstrates that the LSCF samples exhibit semiconducting and metallic behaviors at low and high temperatures, respectively. 31 Fig.…”

Section: Resultsmentioning

confidence: 72%

Enhanced CO₂electrolysis through modulation of oxygen vacancies

Huang

Yang

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 72%

Enhanced CO₂electrolysis through modulation of oxygen vacancies

Huang

Yang

et al. 2023

New J. Chem.

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“…It is found that the R p of the LSCM(FC) 0.075 -SDC electrode decreases from 0.48 Ω cm 2 (at 1.2 V) to 0.26 Ω cm 2 (at 1.6 V), and the LSCM(FC) 0.075 with a metal−oxide interface exhibits a lower resistance than the LSCM without any interface. 32 This finding suggests that constructing a well-formed metal−oxide interface can increase its electronic and ionic conductivity activity more effectively. Therefore, the polarization resistance is further evidence of the excellent catalytic activity of LSCM(FC) 0.075 .…”

Section: Resultsmentioning

confidence: 98%

“…As in Figure f, the polarization resistance ( R p ) descends as the applied potential ascends from 1.2 to 1.6 V, suggesting that increasing the applied voltage is beneficial in motivating the electrode. It is found that the R p of the LSCM(FC) 0.075 -SDC electrode decreases from 0.48 Ω cm 2 (at 1.2 V) to 0.26 Ω cm 2 (at 1.6 V), and the LSCM(FC) 0.075 with a metal–oxide interface exhibits a lower resistance than the LSCM without any interface . This finding suggests that constructing a well-formed metal–oxide interface can increase its electronic and ionic conductivity activity more effectively.…”

Section: Resultsmentioning

confidence: 99%

Modification of LSCM Structure by Anchoring Alloy Nanoparticles for Efficient CO₂ Electrolysis

Sun,

He,

Huang

et al. 2024

Energy Fuels

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Solid oxide electrolytic cells (SOECs) are a sustainable solution for carbon-neutral applications due to their property of simultaneously removing excess carbon dioxide from the air and producing valuable chemicals. However, the unsatisfactory cathodic catalytic activity has been hindering the popularization of this technology. In this work, we anchored FeCu alloy nanoparticles on the surface of perovskite cathode (La 0.7 Sr 0.3 Cr 0.5 Mn 0.5 (FeCu) x O 3−δ , LSCM(FC) x , x = 0, 0.025, 0.05, 0.075, and 0.1) by overdoping Fe and Cu at the B-site and reduction pretreatment to establish a stable metal−oxide active interface, which promoted the CO 2 adsorption and decomposition, thus achieving the optimization of catalytic performance and carbon deposition resistance. The LSCM(FC) 0.075 prepared in the study exhibited higher catalytic activity (CO productivity up to 4.41 mL min −1 cm −2 and 98.1% Faradaic current efficiency at 1.6 V and 850 °C), in contrast to its CO yield which was 2.6 times that of the untreated LSCM. Furthermore, the current was maintained stably during up to 100 h of testing, and the LSCM(FC) 0.075 -SDC electrode structure was not altered with no obvious degradation in performance. This new design of the SOEC cathode material will therefore have great potential for development.

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“…In fact, in the low voltage range, the main processes taking place in the cell are electrode activation and oxygen pumping processes. More importantly, SSOECs exhibit an exceptionally low R p of approximately 0.1 Ω·cm 2 at 2.0 V. This R p value is notably lower in comparison to those of alternative materials such as Sr 2 Fe 1.5+ x Mo 0.5 O 6−δ , Sr 2 Ti 0.8 Co 0.2 FeO 6−δ , and La 0.55 Sr 0.45 Fe 0.85 Mo 0.15 O 3 , suggesting the excellent electrocatalytic activity of the PBFN electrode. From 1.2 to 2.0 V, the current densities within the SSOECs ranged from 0.305 to 1.03 A·cm – 2 at 800 °C.…”

Section: Methodsmentioning

confidence: 91%

Boosting the Electrocatalytic Activity of Pr_0.5Ba_0.5FeO_3−δ via Ni Doping in Symmetric Solid Oxide Electrolysis Cells

Tian,

Xue,

Zhang

et al. 2023

J. Phys. Chem. Lett.

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Symmetric solid oxide electrolysis cells (SSOECs) have garnered significant scientific interest due to their simplified cell architecture, robust operational reliability, and cost-effectiveness, for which a highly electrocatalytically active electrode is the decisive main factor. This work evaluates the electrochemical performance of Nidoped Pr 0 . 5 Ba 0 . 5 FeO 3 − δ (PBF) perovskite materials, with a focus on Pr 0.5 Ba 0.5 Fe 0.8 Ni 0.2 O 3−δ (PBFN). The experimental findings herein prove the exceptional electrocatalytic ability of PBFN in facilitating the oxygen evolution and carbon dioxide reduction reaction, surpassing the electrochemical performance of PBF. In addition, the PBFN symmetric cell has excellent performance for CO 2 electrolysis, and the cell has a low polarization resistance value of 0.1 Ω•cm 2 . Moreover, it achieves an impressive current density value of 1.118 A•cm −2 under operating conditions of 2.0 V and 800 °C, which is superior to those of the PBF symmetric cell and the PBFN asymmetric cell. It also has a good structural and performance stability. These results imply a bright development prospect of PBFN as electrodes for SSOECs.

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Enhanced CO2 electrolysis at metal–oxide interfaces

Cited by 10 publications

References 33 publications

Enhanced CO₂electrolysis through modulation of oxygen vacancies

Enhanced CO₂electrolysis through modulation of oxygen vacancies

Modification of LSCM Structure by Anchoring Alloy Nanoparticles for Efficient CO₂ Electrolysis

Boosting the Electrocatalytic Activity of Pr_0.5Ba_0.5FeO_3−δ via Ni Doping in Symmetric Solid Oxide Electrolysis Cells

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Enhanced CO2 electrolysis at metal–oxide interfaces

Cited by 10 publications

References 33 publications

Enhanced CO2electrolysis through modulation of oxygen vacancies

Enhanced CO2electrolysis through modulation of oxygen vacancies

Modification of LSCM Structure by Anchoring Alloy Nanoparticles for Efficient CO2 Electrolysis

Boosting the Electrocatalytic Activity of Pr0.5Ba0.5FeO3−δ via Ni Doping in Symmetric Solid Oxide Electrolysis Cells

Contact Info

Product

Resources

About

Enhanced CO₂electrolysis through modulation of oxygen vacancies

Enhanced CO₂electrolysis through modulation of oxygen vacancies

Modification of LSCM Structure by Anchoring Alloy Nanoparticles for Efficient CO₂ Electrolysis

Boosting the Electrocatalytic Activity of Pr_0.5Ba_0.5FeO_3−δ via Ni Doping in Symmetric Solid Oxide Electrolysis Cells