Preparation and Electrochemical Performance of Ce-Doped La0.7Sr0.3Cr0.5Fe0.5O3-δ Materials

Abstract

Abstract: In recent years, the massive consumption of fossil fuels has led to increasingly serious environmental pollution. Solid oxide electrolysis cell (SOEC) has attracted more and more attention because it can efficiently and environmentally convert CO₂ into CO and other high value-added chemicals. Electrode materials with excellent performance are crucial to the development of efficient and stable SOEC. La_0.7Sr_0.3Cr_0.5Fe_0.5O_3-δ(Sto-LSCrF)perovskite oxide has attracted widespread attention due to its excellent oxidation-reduction stability. In order to further improve the performance of Sto-LSCrF fuel electrode materials for CO₂ electrolysis, the A-site doping Ce strategy in Sto-LSCrF was adopted to improve the content of mobile oxygen vacancies in Ce-LSCrF, so as to increase its adsorption and activation ability of CO₂ and then enhance its electrochemistry properties. At the same time, the phase structure, oxygen vacancies content and CO₂ adsorption and desorption capacity of the materials were characterized and analyzed in detail. In addition, the electrochemical performance of Ce-LSCrF was explored. Compared with Sto-LSCrF, Ce-LSCrF fuel electrode not only exhibits higher electrolysis performance, but also shows better constant voltage discharge stability. The enhancement of electrolytic performance is attributed to more mobile oxygen vacancies in Ce-LSCrF lattice that can effectively absorb and activate CO₂. These results indicate that Ce-LSCrF is an excellent fuel electrode material for CO₂ electrolysis in SOEC.

Key words: solid oxide electrolysis cell, perovskite oxide, electrolysis of CO₂, oxygen vacancy, fuel electrode, Ce-doping

CLC Number:

TM911

CHANG Hong, CHANG Xiangyu, SU Shiyang, CHEN Huili. Preparation and Electrochemical Performance of Ce-Doped La_0.7Sr_0.3Cr_0.5Fe_0.5O_3-δ Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(3): 1012-1019.

References

[1] LEI L B, ZHANG J H, YUAN Z H, et al. Progress report on proton conducting solid oxide electrolysis cells[J]. Advanced Functional Materials, 2019, 29(37): 1903805.
[2] LI Y H, LI Y, WAN Y H, et al. Perovskite oxyfluoride electrode enabling direct electrolyzing carbon dioxide with excellent electrochemical performances[J]. Advanced Energy Materials, 2019, 9(3): 1803156.
[3] GRAVES C, EBBESEN S D, JENSEN S H, et al. Eliminating degradation in solid oxide electrochemical cells by reversible operation[J]. Nature Materials, 2015, 14(2): 239-244.
[4] YE L, ZHANG M, HUANG P, et al. Enhancing CO₂ electrolysis through synergistic control of non-stoichiometry and doping to tune cathode surface structures[J]. Nature Communications, 2017, 8: 14785.
[5] LI T P, WANG T P, WEI T, et al. Robust anode-supported cells with fast oxygen release channels for efficient and stable CO₂ electrolysis at ultrahigh current densities[J]. Small, 2021, 17(6): 2007211.
[6] SONG Y F, ZHANG X M, XIE K, et al. High-temperature CO₂ electrolysis in solid oxide electrolysis cells: developments, challenges, and prospects[J]. Advanced Materials, 2019, 31(50): 1902033.
[7] SONG Y F, ZHOU Z W, ZHANG X M, et al. Pure CO₂ electrolysis over an Ni/YSZ cathode in a solid oxide electrolysis cell[J]. Journal of Materials Chemistry A, 2018, 6(28): 13661-13667.
[8] TAO Y K, EBBESEN S D, MOGENSEN M B. Degradation of solid oxide cells during co-electrolysis of steam and carbon dioxide at high current densities[J]. Journal of Power Sources, 2016, 328: 452-462.
[9] GRAVES C, EBBESEN S D, MOGENSEN M. Co-electrolysis of CO₂ and H₂O in solid oxide cells: performance and durability[J]. Solid State Ionics, 2011, 192(1): 398-403.
[10] LI Y H, LI P, HU B B, et al. A nanostructured ceramic fuel electrode for efficient CO₂/H₂O electrolysis without safe gas[J]. Journal of Materials Chemistry A, 2016, 4(23): 9236-9243.
[11] ISHIHARA T, WANG S J, WU K T. Highly active oxide cathode of La(Sr)Fe(Mn)O₃ for intermediate temperature CO₂ and CO₂-H₂O co-electrolysis using LSGM electrolyte[J]. Solid State Ionics, 2017, 299: 60-63.
[12] LI Z, LI S S, TSENG C J, et al. Redox-reversible perovskite ferrite cathode for high temperature solid oxide steam electrolyser[J]. Electrochimica Acta, 2017, 229: 48-54.
[13] QI W T, GAN Y, YIN D, et al. Remarkable chemical adsorption of manganese-doped titanate for direct carbon dioxide electrolysis[J]. Journal of Materials Chemistry A, 2014, 2(19): 6904-6915.
[14] YUE X L, IRVINE J T S. Alternative cathode material for CO₂ reduction by high temperature solid oxide electrolysis cells[J]. Journal of the Electrochemical Society, 2012, 159(8): F442-F448.
[15] SUN Y F, LI J H, CHUANG K T, et al. Electrochemical performance and carbon deposition resistance of Ce-doped La_0.7Sr_0.3Fe_0.5Cr_0.5O_3-δ anode materials for solid oxide fuel cells fed with syngas[J]. Journal of Power Sources, 2015, 274: 483-487.
[16] LIU S B, LIU Q X, LUO J L. CO₂ to CO conversion on layered perovskite with in situ exsolved Co-Fe alloy nanoparticles: an active and stable cathode for solid oxide electrolysis cells[J]. Journal of Materials Chemistry A, 2016, 4(44): 17521-17528.
[17] ZHANG Y Q, LI J H, SUN Y F, et al. Highly active and redox-stable Ce-doped LaSrCrFeO-based cathode catalyst for CO₂ SOECs[J]. ACS Applied Materials & Interfaces, 2016, 8(10): 6457-6463.
[18] SUN Y F, LI J H, WANG M N, et al. A-site deficient chromite perovskite with in situ exsolution of nano-Fe: a promising bi-functional catalyst bridging the growth of CNTs and SOFCs[J]. Journal of Materials Chemistry A, 2015, 3(28): 14625-14630.
[19] ZHOU Y J, ZHOU Z W, SONG Y F, et al. Enhancing CO₂ electrolysis performance with vanadium-doped perovskite cathode in solid oxide electrolysis cell[J]. Nano Energy, 2018, 50: 43-51.
[20] LI Y H, CHEN X R, YANG Y, et al. Mixed-conductor Sr₂Fe_1.5Mo_0.5O_6-δ as robust fuel electrode for pure CO₂ reduction in solid oxide electrolysis cell[J]. ACS Sustainable Chemistry & Engineering, 2017, 5(12): 11403-11412.
[21] GUO T, DONG X, SHIROLKAR M M, et al. Effects of cobalt addition on the catalytic activity of the Ni-YSZ anode functional layer and the electrochemical performance of solid oxide fuel cells[J]. ACS Applied Materials & Interfaces, 2014, 6(18): 16131-16139.
[22] SUN Y F, ZHANG Y Q, CHEN J, et al. New opportunity for in situ exsolution of metallic nanoparticles on perovskite parent[J]. Nano Letters, 2016, 16(8): 5303-5309.
[23] ZHANG X M, LIU L, ZHAO Z, et al. Enhanced oxygen reduction activity and solid oxide fuel cell performance with a nanoparticles-loaded cathode[J]. Nano Letters, 2015, 15(3): 1703-1709.
[24] WANG S, DENG S, HAO Z, et al. Ca/Cu co-doped SmFeO₃ as a fuel electrode material for direct electrolysis of CO₂ in SOECs[J]. Fuel Cells, 2020, 20(6): 682-689.
[25] LIU S B, LIU Q X, LUO J L. Highly stable and efficient catalyst with in situ exsolved Fe-Ni alloy nanospheres socketed on an oxygen deficient perovskite for direct CO₂ electrolysis[J]. ACS Catalysis, 2016, 6(9): 6219-6228.

Preparation and Electrochemical Performance of Ce-Doped La_0.7Sr_0.3Cr_0.5Fe_0.5O_3-δ Materials

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 2

Recommended Articles

Metrics

Comments

[1]	WANG Xuejing, MA Ruixiao, XU Juan, ZHANG Yanhui. Research Progress of Defective Semiconductor Used in Photocatalytic Nitrogen Fixation [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(3): 1053-1062.
[2]	CHEN Yan-guang;YAN Wei-ning;HAN Hong-jing;ZHANG Lei;AN Hong-yu;WANG Hai-ying. Preparation of Perovskite Oxide and Its Application in Environmental Protection [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2016, 35(7): 2142-2148.