Building efficient and durable 3D nanotubes electrode for solid oxide electrolytic cells

Chunming Xu; Lihong Zhang; Wang Sun; Rongzheng Ren; Xiao Yang; Xiaoxia Yang; Minjian Ma; Jinshuo Qiao; Zhenhua Wang; Kening Sun

doi:10.1016/j.jpowsour.2022.232479

Building efficient and durable 3D nanotubes electrode for solid oxide electrolytic cells

Chunming Xu, Lihong Zhang, Wang Sun^*, Rongzheng Ren^*, Xiao Yang, Xiaoxia Yang, Minjian Ma, Jinshuo Qiao, Zhenhua Wang, Kening Sun^*

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Solid oxide electrolytic cells (SOEC) have great potential in CO₂ conversion and energy storage. However, commercial application of SOEC is still challenging due to the sluggish rate of CO₂ electrochemical reduction caused by the arduous activation and limited CO₂ adsorption on cathode surface. In this study, synergetic regulation strategy on intrinsic catalysis activity and surface amelioration is proposed to improve the CO₂ adsorption capacity and increase the adsorption sites. This strategy is demonstrated in a Cu-doped three-dimensional (3D) porous Sr₂Fe₁_·₃Cu₀_·₂Mo₀_·₅O_6−δ(SFCuM) nanotube cathode. The results indicate that SFCuM nanotube shows more oxygen vacancies and excellent oxygen ion conduction. At the same time, the nanostructure provides a larger three-phase reaction interface and more reaction sites for CO₂ reduction reaction (CO₂RR). Benefiting from these merits, the maximum electrolytic current density of the designed SFCuM electrode can be improved to 1.68 A cm⁻² at 750 °C and the related polarization resistance can be lowered to 0.59 Ω cm². In addition, the porous SFCuM nanotube electrode also showed good stability at a constant electrolytic voltage of 1.5 V, with no performance decay during continuous 200-h operation. Such a synergetic regulation strategy may provide some new insight on catalyst design and modification for high-activity CO₂RR electrode.

Original language	English
Article number	232479
Journal	Journal of Power Sources
Volume	556
DOIs	https://doi.org/10.1016/j.jpowsour.2022.232479
Publication status	Published - 1 Feb 2023

Keywords

CO reduction
Perovskite oxides
Solid oxide electrolytic cells
Three-dimensional nanotubes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2022.232479

Cite this

Xu, C., Zhang, L., Sun, W., Ren, R., Yang, X., Yang, X., Ma, M., Qiao, J., Wang, Z., & Sun, K. (2023). Building efficient and durable 3D nanotubes electrode for solid oxide electrolytic cells. Journal of Power Sources, 556, Article 232479. https://doi.org/10.1016/j.jpowsour.2022.232479

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title = "Building efficient and durable 3D nanotubes electrode for solid oxide electrolytic cells",

abstract = "Solid oxide electrolytic cells (SOEC) have great potential in CO2 conversion and energy storage. However, commercial application of SOEC is still challenging due to the sluggish rate of CO2 electrochemical reduction caused by the arduous activation and limited CO2 adsorption on cathode surface. In this study, synergetic regulation strategy on intrinsic catalysis activity and surface amelioration is proposed to improve the CO2 adsorption capacity and increase the adsorption sites. This strategy is demonstrated in a Cu-doped three-dimensional (3D) porous Sr2Fe1·3Cu0·2Mo0·5O6−δ(SFCuM) nanotube cathode. The results indicate that SFCuM nanotube shows more oxygen vacancies and excellent oxygen ion conduction. At the same time, the nanostructure provides a larger three-phase reaction interface and more reaction sites for CO2 reduction reaction (CO2RR). Benefiting from these merits, the maximum electrolytic current density of the designed SFCuM electrode can be improved to 1.68 A cm−2 at 750 °C and the related polarization resistance can be lowered to 0.59 Ω cm2. In addition, the porous SFCuM nanotube electrode also showed good stability at a constant electrolytic voltage of 1.5 V, with no performance decay during continuous 200-h operation. Such a synergetic regulation strategy may provide some new insight on catalyst design and modification for high-activity CO2RR electrode.",

keywords = "CO reduction, Perovskite oxides, Solid oxide electrolytic cells, Three-dimensional nanotubes",

author = "Chunming Xu and Lihong Zhang and Wang Sun and Rongzheng Ren and Xiao Yang and Xiaoxia Yang and Minjian Ma and Jinshuo Qiao and Zhenhua Wang and Kening Sun",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2023",

month = feb,

day = "1",

doi = "10.1016/j.jpowsour.2022.232479",

language = "English",

volume = "556",

journal = "Journal of Power Sources",

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T1 - Building efficient and durable 3D nanotubes electrode for solid oxide electrolytic cells

AU - Xu, Chunming

AU - Zhang, Lihong

AU - Sun, Wang

AU - Ren, Rongzheng

AU - Yang, Xiao

AU - Yang, Xiaoxia

AU - Ma, Minjian

AU - Qiao, Jinshuo

AU - Wang, Zhenhua

AU - Sun, Kening

PY - 2023/2/1

Y1 - 2023/2/1

N2 - Solid oxide electrolytic cells (SOEC) have great potential in CO2 conversion and energy storage. However, commercial application of SOEC is still challenging due to the sluggish rate of CO2 electrochemical reduction caused by the arduous activation and limited CO2 adsorption on cathode surface. In this study, synergetic regulation strategy on intrinsic catalysis activity and surface amelioration is proposed to improve the CO2 adsorption capacity and increase the adsorption sites. This strategy is demonstrated in a Cu-doped three-dimensional (3D) porous Sr2Fe1·3Cu0·2Mo0·5O6−δ(SFCuM) nanotube cathode. The results indicate that SFCuM nanotube shows more oxygen vacancies and excellent oxygen ion conduction. At the same time, the nanostructure provides a larger three-phase reaction interface and more reaction sites for CO2 reduction reaction (CO2RR). Benefiting from these merits, the maximum electrolytic current density of the designed SFCuM electrode can be improved to 1.68 A cm−2 at 750 °C and the related polarization resistance can be lowered to 0.59 Ω cm2. In addition, the porous SFCuM nanotube electrode also showed good stability at a constant electrolytic voltage of 1.5 V, with no performance decay during continuous 200-h operation. Such a synergetic regulation strategy may provide some new insight on catalyst design and modification for high-activity CO2RR electrode.

AB - Solid oxide electrolytic cells (SOEC) have great potential in CO2 conversion and energy storage. However, commercial application of SOEC is still challenging due to the sluggish rate of CO2 electrochemical reduction caused by the arduous activation and limited CO2 adsorption on cathode surface. In this study, synergetic regulation strategy on intrinsic catalysis activity and surface amelioration is proposed to improve the CO2 adsorption capacity and increase the adsorption sites. This strategy is demonstrated in a Cu-doped three-dimensional (3D) porous Sr2Fe1·3Cu0·2Mo0·5O6−δ(SFCuM) nanotube cathode. The results indicate that SFCuM nanotube shows more oxygen vacancies and excellent oxygen ion conduction. At the same time, the nanostructure provides a larger three-phase reaction interface and more reaction sites for CO2 reduction reaction (CO2RR). Benefiting from these merits, the maximum electrolytic current density of the designed SFCuM electrode can be improved to 1.68 A cm−2 at 750 °C and the related polarization resistance can be lowered to 0.59 Ω cm2. In addition, the porous SFCuM nanotube electrode also showed good stability at a constant electrolytic voltage of 1.5 V, with no performance decay during continuous 200-h operation. Such a synergetic regulation strategy may provide some new insight on catalyst design and modification for high-activity CO2RR electrode.

KW - CO reduction

KW - Perovskite oxides

KW - Solid oxide electrolytic cells

KW - Three-dimensional nanotubes

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DO - 10.1016/j.jpowsour.2022.232479

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SN - 0378-7753

VL - 556

JO - Journal of Power Sources

JF - Journal of Power Sources

M1 - 232479

ER -

Building efficient and durable 3D nanotubes electrode for solid oxide electrolytic cells

Abstract

Keywords

UN SDGs

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