Journal Article10.1021/ACSSUSCHEMENG.9B01183
Nano-CeO2-Modified Cathodes for Direct Electrochemical CO2 Reduction in Solid Oxide Electrolysis Cells
Lixiao Zhang,Lixiao Zhang,Shiqing Hu,Shiqing Hu,Wenping Li,Zhongwei Cao,Huanying Liu,Xuefeng Zhu,Weishen Yang +8 more
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TL;DR: In this article, nano-CeO2-modified cathodes were successfully impregnated into an LSCM-Gd0.5O3-δ composite cathode to investigate its effects on the CO2 electrochemical reduction.
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Abstract: La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCM) is a promising cathode for CO2 electroreduction in solid oxide electrolysis cells (SOECs), but its low catalytic activity limits the performance of SOECs. In this work, CeO2 nanoparticles with a size of 3–5 nm were successfully impregnated into an LSCM-Gd0.1Ce0.9O1.95 (GDC) composite cathode to investigate its effects on the CO2 electrochemical reduction. The introduction of CeO2 nanoparticles on the LSCM-GDC cathodes can create more three-phase boundaries (TPBs), improve the CO2 adsorption capability, and facilitate the transportation of oxygen ions between the cathode and the electrolyte. Therefore, the nano-CeO2-modified cathodes show better performance than the conventional LSCM-GDC cathode. The maximum current density of the nano-CeO2-modified cathode is about 90% higher than that of the conventional LSCM-GDC cathode at 1.4 V and 800 °C. Therefore, loading nano-CeO2 onto the LSCM-GDC backbone is an effective way to improve the electrocatalytic performance of the conv...
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Citations
A review on cathode processes and materials for electro-reduction of carbon dioxide in solid oxide electrolysis cells
TL;DR: In this paper, the authors discuss the fundamentals of CO2 electro-reduction including thermal dynamics and kinetics, and then summarize the recent advances in understanding reaction mechanisms and exploring cathode materials.
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Enhancing electrochemical CO2 reduction using Ce(Mn,Fe)O2 with La(Sr)Cr(Mn)O3 cathode for high-temperature solid oxide electrolysis cells
TL;DR: In this article, the International R&D Program (grant no. P0004433) and the Technology Innovation Program (20004963) funded by Korea Institute for Advnacement of Technology (KIAT), Korea Evaluation Institute of Industrial Technology (KEIT), and the Ministry or Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20182010600400).
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Enhancing CO2 Catalytic Adsorption on an Fe Nanoparticle-Decorated LaSrFeO4 + δ Cathode for CO2 Electrolysis.
Changyang Liu,Shuting Li,Jianquan Gao,Liuzhen Bian,Yunting Hou,Lijun Wang,Jun Peng,Jinxiao Bao,Xiwen Song,Shengli An +9 more
TL;DR: In this paper, a low-cost and highly active metallic Fe nanoparticle-decorated Ruddlesden-Popper (La, Sr)FeO4+δ cathode catalyst (Fe-RPLSF), which shows a high oxygen vacancy concentration and robust CO2 reduction rate, was reported.
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Thermal Stability of an in Situ Exsolved Metallic Nanoparticle Structured Perovskite Type Hydrogen Electrode for Solid Oxide Cells
TL;DR: In this article, the thermal stability of an exsolved Ni-Fe nanoparticle structured Sr2Fe1.4Ni0.1Mo0.5O6 (SFMNi) perovskite type hydrogen electrode is studied by examining the evolution of electro...
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Boosting CO2 electrolysis performance via calcium-oxide-looping combined with in situ exsolved Ni–Fe nanoparticles in a symmetrical solid oxide electrolysis cell
Tian Yunfeng,Tian Yunfeng,Yun Liu,Aaron B. Naden,Lichao Jia,Min Xu,Wen Cui,Bo Chi,Jian Pu,John T. S. Irvine,Jian Li +10 more
TL;DR: In this article, a novel cathode containing calcium oxide-looping and in situ exsolved Ni-Fe nanoparticles was produced by performing a one-step reduction of La 0.6Ca0.4Fe0.8Ni0.2O3−δ (LCaFN).
References
Effects of Bi doping on the microstructure, electrical and electrochemical properties of La2-xBixCu0.5Mn1.5O6 (x = 0, 0.1 and 0.2) perovskites as novel cathodes for solid oxide fuel cells
Chuangang Yao,Chuangang Yao,Junling Meng,Xiaojuan Liu,Xiong Zhang,Fanzhi Meng,Xiaojie Wu,Jian Meng +7 more
TL;DR: In this paper, the effects of 6s 2 lone pair electrons on the electrical and electrochemical properties of LBCMs were investigated, and the results reveal that Bi 3+ affects the properties of lBCMs in two ways: first, it promotes the formation of oxygen vacancies, which is consistent with the results of first-principles calculations.
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Highly Efficient CO2 Electrolysis on Cathodes with Exsolved Alkaline Earth Oxide Nanostructures
Lingting Ye,Changchang Pan,Minyi Zhang,Chunsen Li,Fanglin Chen,Lizhen Gan,Lizhen Gan,Kui Xie +7 more
TL;DR: A novel approach in tailoring a perovskite titanate (La, Sr)TiO3+δ cathode surface by the in situ growing of SrO nanoislands from the host material through the control of perovSkite nonstoichiometry is shown, which results in an exceptionally high direct CO2 electrolysis performance with current efficiencies near 100%.
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Perovskite Chromates Cathode with Exsolved Iron Nanoparticles for Direct High-Temperature Steam Electrolysis
TL;DR: The synergetic effect of catalytic-active iron nanoparticles and redox-stable LSCrF substrate produced improved performances and excellent stability for the direct steam electrolysis without a flow of reducing gas over the composite cathodes.
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A redox-stable chromate cathode decorated with in situ grown nickel nanocatalyst for efficient carbon dioxide electrolysis
Cong Ruan,Kui Xie +1 more
TL;DR: In this paper, catalytically active nickel nanoparticles are anchored on the surface of an LSCM substrate through an in situ growth process to improve the electrode performance, and a significant improvement in electrode polarization resistance is observed for the LSCMN cathode.
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Three-dimensional quantification of composition and electrostatic potential at individual grain boundaries in doped ceria
David R. Diercks,Jianhua Tong,Huayang Zhu,Robert J. Kee,George Baure,Juan C. Nino,Ryan O'Hayre,Brian P. Gorman +7 more
TL;DR: In this article, the three-dimensional quantification of oxygen and cation compositions around arbitrarily selected high-angle grain boundaries in a polycrystalline material as measured by atom probe tomography is used to extract nm-scale, quantitative values of the threedimensional space-charge potentials around grain boundaries and are related to the observed macro-scale conductivities.
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