Electrochemical reduction of CO2 in a symmetrical solid oxide electrolysis cell with La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ electrode

Yang, Zhibin; Ma, Chaoyang; Wang, Ning; Jin, Xinfang; Jin, Chao; Peng, Suping

doi:10.1016/j.jcou.2019.07.021

Cited by 60 publications

(18 citation statements)

References 20 publications

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“…Bian et al investigated La0.6Ce0.1Sr0.3Fe0.9Ni0.1O3-δ as electrodes of SSOFC and the cell exhibited excellent peak power density of 900 mW cm -2 at 850 °C in wet H2 [27]. La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ electrode-based SSOEC could obtain current density of 0.442 A cm -2 at 1.5 V and 800 °C for CO2 electrolysis [28]. In our previous work, La0.6Sr0.4Fe0.8Ni0.2O3δ (LSFN) electrode-based SSOEC could achieve high Faraday efficiency and CO production rate.…”

Section: Introductionmentioning

confidence: 99%

A novel electrode with multifunction and regeneration for highly efficient and stable symmetrical solid oxide cell

Tian

Liu

Jia

et al. 2020

Journal of Power Sources

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Symmetrical solid oxide cells (SSOCs) have been extensively recognized due to their simple cell configuration, low cost and reliability. High performance electrode is the key determinant of SSOCs. Herein, a multifunctional perovskite oxide La0.6Ca0.4Fe0.8Ni0.2O3-δ (LCaFN) is investigated as electrode for SSOCs. The results confirm that LCaFN shows excellent oxygen reduction reaction (ORR), oxygen evolution reaction (OER), carbon dioxide reduction reaction (CO2-RR) and hydrogen oxidation reaction (HOR) catalytic activity. In SOFC mode, the SSOCs with LCaFN achieve good electrochemical performance with maximum power density of 300 mW cm -2 at 800 °C. For pure CO2 electrolysis in SOEC mode, polarization resistance of 0.055 Ω cm 2 and current density of 1.5 A cm -2 are achieved at 2.0 V at 800 °C. Besides, the cell shows excellent stability both in SOFC mode and SOEC mode.Most importantly, SSOCs with symmetrical LCaFN electrodes show robust and regenerative performance under anodic or cathodic process during the switching gas, showing the great reliability of the SSOCs. The results show that this novel electrode offers a promising strategy for operation of SSOCs.

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Section: Introductionmentioning

confidence: 99%

A novel electrode with multifunction and regeneration for highly efficient and stable symmetrical solid oxide cell

Tian

Liu

Jia

et al. 2020

Journal of Power Sources

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“…The R p is 0.33 Ω cm 2 at 800 °C (Figure f), which is higher than the R p of single cells (0.18 Ω cm 2 at 800 °C), indicating that the catalytic activity to oxygen evolution reaction using LCCF64 as the anode is inferior to the state-of-art LSCF anode. However, LCCF64 symmetrical cells for CO 2 electrolysis in this work exhibit higher current density (1.78 A cm –2 ) at 1.5 V at 800 °C than symmetrical cells using other electrodes such as La 0.4 Sr 0.6 Co 0.2 Fe 0.7 Nb 0.1 O 3−δ (0.442 A cm –2 at 1.5 V), La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3−δ (1.41 A cm –2 at 2 V), La 0.6 Sr 0.4 Fe 0.9 Mn 0.1 O 3−δ (1.107 A cm –2 at 2 V), etc., under similar testing conditions. The comparable current density and R p shown in single and symmetrical cells imply that LCCF64 has excellent catalytic activity for CO 2 electrolysis.…”

Section: Resultsmentioning

confidence: 75%

Unlocking the Potential of A-Site Ca-Doped LaCo_0.2Fe_0.8O_3−δ: A Redox-Stable Cathode Material Enabling High Current Density in Direct CO₂ Electrolysis

Li,

Wang,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Massive carbon dioxide (CO2) emission from recent human industrialization has affected the global ecosystem and raised great concern for environmental sustainability. The solid oxide electrolysis cell (SOEC) is a promising energy conversion device capable of efficiently converting CO2 into valuable chemicals using renewable energy sources. However, Sr-containing cathode materials face the challenge of Sr carbonation during CO2 electrolysis, which greatly affects the energy conversion efficiency and long-term stability. Thus, A-site Ca-doped La1–x Ca x Co0.2Fe0.8O3−δ (0.2 ≤ x ≤ 0.6) oxides are developed for direct CO2 conversion to carbon monoxide (CO) in an intermediate-temperature SOEC (IT-SOEC). With a polarization resistance as low as 0.18 Ω cm2 in pure CO2 atmosphere, a remarkable current density of 2.24 A cm–2 was achieved at 1.5 V with La0.6Ca0.4Co0.2Fe0.8O3−δ (LCCF64) as the cathode in La0.8Sr0.2Ga0.83Mg0.17O3−δ (LSGM) electrolyte (300 μm) supported electrolysis cells using La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) as the air electrode at 800 °C. Furthermore, symmetrical cells with LCCF64 as the electrodes also show promising electrolysis performance of 1.78 A cm–2 at 1.5 V at 800 °C. In addition, stable cell performance has been achieved on direct CO2 electrolysis at an applied constant current of 0.5 A cm–2 at 800 °C. The easily removable carbonate intermediate produced during direct CO2 electrolysis makes LCCF64 a promising regenerable cathode. The outstanding electrocatalytic performance of the LCCF64 cathode is ascribed to the highly active and stable metal/perovskite interfaces that resulted from the in situ exsolved Co/CoFe nanoparticles and the additional oxygen vacancies originated from the Ca2Fe2O5 phase synergistically providing active sites for CO2 adsorption and electrolysis. This study offers a novel approach to design catalysts with high performance for direct CO2 electrolysis.

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“…Many studies have described the effect of the electrode geometry, size, interface area between the electrode and the electrolyte, and the effect of the electrical double layer on CO 2 ERR [71][72][73]. In this review, the roles of the major components are briefly highlighted, as many existing reviews have discussed the work on electrode materials extensively [74,75]. The cathode material plays a primary role of a catalyst for electroreduction in the system.…”

Section: The Roles Of the Electrode In Co 2 Errmentioning

confidence: 99%

Elucidation of the Roles of Ionic Liquid in CO2 Electrochemical Reduction to Value-Added Chemicals and Fuels

et al. 2021

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The electrochemical reduction of carbon dioxide (CO2ER) is amongst one the most promising technologies to reduce greenhouse gas emissions since carbon dioxide (CO2) can be converted to value-added products. Moreover, the possibility of using a renewable source of energy makes this process environmentally compelling. CO2ER in ionic liquids (ILs) has recently attracted attention due to its unique properties in reducing overpotential and raising faradaic efficiency. The current literature on CO2ER mainly reports on the effect of structures, physical and chemical interactions, acidity, and the electrode–electrolyte interface region on the reaction mechanism. However, in this work, new insights are presented for the CO2ER reaction mechanism that are based on the molecular interactions of the ILs and their physicochemical properties. This new insight will open possibilities for the utilization of new types of ionic liquids. Additionally, the roles of anions, cations, and the electrodes in the CO2ER reactions are also reviewed.

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Electrochemical reduction of CO2 in a symmetrical solid oxide electrolysis cell with La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ electrode

Cited by 60 publications

References 20 publications

A novel electrode with multifunction and regeneration for highly efficient and stable symmetrical solid oxide cell

A novel electrode with multifunction and regeneration for highly efficient and stable symmetrical solid oxide cell

Unlocking the Potential of A-Site Ca-Doped LaCo_0.2Fe_0.8O_3−δ: A Redox-Stable Cathode Material Enabling High Current Density in Direct CO₂ Electrolysis

Elucidation of the Roles of Ionic Liquid in CO2 Electrochemical Reduction to Value-Added Chemicals and Fuels

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Electrochemical reduction of CO2 in a symmetrical solid oxide electrolysis cell with La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ electrode

Cited by 60 publications

References 20 publications

A novel electrode with multifunction and regeneration for highly efficient and stable symmetrical solid oxide cell

A novel electrode with multifunction and regeneration for highly efficient and stable symmetrical solid oxide cell

Unlocking the Potential of A-Site Ca-Doped LaCo0.2Fe0.8O3−δ: A Redox-Stable Cathode Material Enabling High Current Density in Direct CO2 Electrolysis

Elucidation of the Roles of Ionic Liquid in CO2 Electrochemical Reduction to Value-Added Chemicals and Fuels

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Unlocking the Potential of A-Site Ca-Doped LaCo_0.2Fe_0.8O_3−δ: A Redox-Stable Cathode Material Enabling High Current Density in Direct CO₂ Electrolysis