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Lanthanum strontium cobalt ferrite (LSCF) is an appreciable cathode material for solid oxide fuel cells (SOFCs), and it has been widely investigated, owing to its excellent thermal and chemical stability. However, its poor oxygen reduction reaction (ORR) activity, particularly at a temperature of ≤ 800 ℃, causes setbacks in achieving a peak power density of > 1.0 W·cm-2, limiting its application in the commercialization of SOFCs. To improve the ORR of LSCF, doping strategies have been found useful. Herein, the porous tantalum-doped LSCF materials (La0.6Sr0.4Co0.4Fe0.57Ta0.03O3 (LSCFT-0), La0.6Sr0.4Co0.4Fe0.54Ta0.06O3, and La0.6Sr0.4Co0.4Fe0.5Ta0.1O3) are prepared via camphor-assisted solid-state reaction (CSSR). The LSCFT-0 material exhibits promising ORR with area-specific resistance (ASR) of 1.260, 0.580, 0.260, 0.100, and 0.06 Ω·cm2 at 600, 650, 700, 750, and 800 ℃, respectively. The performance is about 2 times higher than that of undoped La0.6Sr0.4Co0.4Fe0.6O3 with the ASR of 2.515, 1.191, 0.596, 0.320, and 0.181 Ω·cm2 from the lowest to the highest temperature. Through material characterization, it was found that the incorporated Ta occupied the B-site of the material, leading to the enhancement of the ORR activity. With the use of LSCFT-0 as the cathode material for anode-supported single-cell, the power density of > 1.0 W·cm-2 was obtained at a temperature < 800 ℃. The results indicate that the CSSR-derived LSCFT is a promising cathode material for SOFCs.


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Enhanced cathodic activity by tantalum inclusion at B-site of La0.6Sr0.4Co0.4Fe0.6O3 based on structural property tailored via camphor-assisted solid-state reaction

Show Author's information Dingyu XIONGaSefiu Abolaji RASAKIa,c( )Yangpu LIdLiangdong FANdChangyong LIUa,bZhangwei CHENa,b( )
Additive Manufacturing Institute, Shenzhen University, Shenzhen 518060, China
Guangdong Key Laboratory of Electromagnetic Control and Intelligent Robotics, Shenzhen University, Shenzhen 518060, China
Department of Chemical and Petroleum Engineering, University of Calgary, Calgary T2N1N4, Canada
College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China

Abstract

Lanthanum strontium cobalt ferrite (LSCF) is an appreciable cathode material for solid oxide fuel cells (SOFCs), and it has been widely investigated, owing to its excellent thermal and chemical stability. However, its poor oxygen reduction reaction (ORR) activity, particularly at a temperature of ≤ 800 ℃, causes setbacks in achieving a peak power density of > 1.0 W·cm-2, limiting its application in the commercialization of SOFCs. To improve the ORR of LSCF, doping strategies have been found useful. Herein, the porous tantalum-doped LSCF materials (La0.6Sr0.4Co0.4Fe0.57Ta0.03O3 (LSCFT-0), La0.6Sr0.4Co0.4Fe0.54Ta0.06O3, and La0.6Sr0.4Co0.4Fe0.5Ta0.1O3) are prepared via camphor-assisted solid-state reaction (CSSR). The LSCFT-0 material exhibits promising ORR with area-specific resistance (ASR) of 1.260, 0.580, 0.260, 0.100, and 0.06 Ω·cm2 at 600, 650, 700, 750, and 800 ℃, respectively. The performance is about 2 times higher than that of undoped La0.6Sr0.4Co0.4Fe0.6O3 with the ASR of 2.515, 1.191, 0.596, 0.320, and 0.181 Ω·cm2 from the lowest to the highest temperature. Through material characterization, it was found that the incorporated Ta occupied the B-site of the material, leading to the enhancement of the ORR activity. With the use of LSCFT-0 as the cathode material for anode-supported single-cell, the power density of > 1.0 W·cm-2 was obtained at a temperature < 800 ℃. The results indicate that the CSSR-derived LSCFT is a promising cathode material for SOFCs.

Keywords:

tantalum-doped lanthanum strontium cobalt ferrite (LSCF), solid oxide fuel cell (SOFC), oxygen reduction reaction (ORR), solid-state synthesis reaction, clean energy conversion
Received: 24 March 2022 Revised: 20 June 2022 Accepted: 22 June 2022 Published: 13 July 2022 Issue date: August 2022
References(33)
[1]
Peng JX, Huang J, Wu XL, et al. Solid oxide fuel cell (SOFC) performance evaluation, fault diagnosis and health control: A review. J Power Sources 2021, 505: 230058.
[2]
Panthi D, Hedayat N, Du YH. Densification behavior of yttria-stabilized zirconia powders for solid oxide fuel cell electrolytes. J Adv Ceram 2018, 7: 325-335.
[3]
Heenan TMM, Brett DJL, Shearing PR. Mapping electrochemical activity in solid oxide fuel cells. Mater Today 2017, 20: 155-156.
[4]
Zhu ZQ, Gong ZY, Qu P, et al. Additive manufacturing of thin electrolyte layers via inkjet printing of highly-stable ceramic inks. J Adv Ceram 2021, 10: 279-290.
[5]
Putilov LP, Demin AK, Tsidilkovski VI, et al. Theoretical modeling of the gas humidification effect on the characteristics of proton ceramic fuel cells. Appl Energy 2019, 242: 1448-1459.
[6]
Rasaki SA, Liu CY, Lao CS, et al. A review of current performance of rare earth metal-doped barium zirconate perovskite: The promising electrode and electrolyte material for the protonic ceramic fuel cells. Prog Solid State Chem 2021, 63: 100325.
[7]
Mosiałek M, Kędra A, Krzan M, et al. Ba0.5Sr0.5Co0.8Fe0.2O3-σ-La0.6Sr0.4Co0.8Fe0.2O3-σ composite cathode for solid oxide fuel cell. Arch Metall Mater 2016, 61: 1137-1142.
[8]
Lassman A, Verma A, Singh P. Development of cathodes for low temperature solid oxide fuel cells. Meet Abstr 2010, MA2010-01: 719.
[9]
Rembelski D, Viricelle JP, Combemale L, et al. Characterization and comparison of different cathode materials for SC-SOFC: LSM, BSCF, SSC, and LSCF. Fuel Cells 2012, 12: 256-264.
[10]
Zhang WW, Wang HC, Guan K, et al. La0.6Sr0.4Co0.2Fe0.8O3-δ/CeO2 heterostructured composite nanofibers as a highly active and robust cathode catalyst for solid oxide fuel cells. ACS Appl Mater Inter 2019, 11: 26830-26841.
[11]
Jang I, Kim S, Kim C, et al. Enhancement of oxygen reduction reaction through coating a nano-web-structured La0.6Sr0.4Co0.2Fe0.8O3-δ thin-film as a cathode/electrolyte interfacial layer for lowering the operating temperature of solid oxide fuel cells. J Power Sources 2018, 392: 123-128.
[12]
Hardman S, Chandan A, Steinberger-Wilckens R. Fuel cell added value for early market applications. J Power Sources 2015, 287: 297-306.
[13]
Kan WH, Samson AJ, Thangadurai V. Trends in electrode development for next generation solid oxide fuel cells. J Mater Chem A 2016, 4: 17913-17932.
[14]
Wang HQ, Yakal-Kremski KJ, Yeh T, et al. Mechanisms of performance degradation of (La,Sr)(Co,Fe)O3-δ solid oxide fuel cell cathodes. J Electrochem Soc 2016, 163: F581-F585.
[15]
Haile SM. Materials for fuel cells. Mater Today 2003, 6: 24-29.
[16]
Zhou F, Liu YH, Zhao XF, et al. Effects of cerium doping on the performance of LSCF cathodes for intermediate temperature solid oxide fuel cells. Int J Hydrogen Energy 2018, 43: 18946-18954.
[17]
Chen HJ, Guo Z, Zhang LA, et al. Improving the electrocatalytic activity and durability of the La0.6Sr0.4Co0.2Fe0.8O3-δ cathode by surface modification. ACS Appl Mater Inter 2018, 10: 39785-39793.
[18]
Li MR, Zhao MW, Li F, et al. A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 ℃. Nat Commun 2017, 8: 13990.
[19]
Garcia-Barriocanal J, Rivera-Calzada A, Varela M, et al. Colossal ionic conductivity at interfaces of epitaxial ZrO2: Y2O3/SrTiO3 heterostructures. Science 2008, 321: 676-680.
[20]
Ohtomo A, Hwang HY. A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface. Nature 2004, 427: 423-426.
[21]
Rasaki SA, Liu CY, Lao CS, et al. A review of current performance of rare earth metal-doped barium zirconate perovskite: The promising electrode and electrolyte material for the protonic ceramic fuel cells. Prog Solid State Chem 2021, 63: 100325.
[22]
Rasaki SA, Zhang BX, Anbalgam K, et al. Synthesis and application of nano-structured metal nitrides and carbides: A review. Prog Solid State Chem 2018, 50: 1-15.
[23]
Bousnina MA, Dujardin R, Perriere L, et al. Synthesis, sintering, and thermoelectric properties of the solid solution La1-xSrxCoO3±δ (0 ≤ x ≤ 1). J Adv Ceram 2018, 7: 160-168.
[24]
Rasaki SA, Chen ZW, Thomas T, et al. Anti-perovskite metal carbides: A new family of promising electrocatalysts for oxygen reduction in alkaline solution. Mater Res Bull 2021, 133: 111014.
[25]
Rasaki SA, Shen HJ, Thomas T, et al. Solid-solid separation approach for preparation of carbon-supported cobalt carbide nanoparticle catalysts for oxygen reduction. ACS Appl Nano Mater 2019, 2: 3662-3670.
[26]
Ghouse M, Al-Yousef Y, Al-Musa A, et al. Preparation of La0.6Sr0.4Co0.2Fe0.8O3 nanoceramic cathode powders for solid oxide fuel cell (SOFC) application. Int J Hydrogen Energy 2010, 35: 9411-9419.
[27]
Nurherdiana SD, Sholichah N, Iqbal RM, et al. Preparation of La0.7Sr0.3Co0.2Fe0.8O3-δ (LSCF 7328) by combination of mechanochemical and solid state reaction. Key Eng Mater 2017, 744: 399-403.
[28]
Budiman RA, Hashimoto S, Nakamura T, et al. Oxygen reduction reaction process of LaNi0.6Fe0.4O3-δ film-porous Ce0.9Gd0.1O1.95 heterostructure electrode. Solid State Ionics 2017, 312: 80-87.
[29]
Liu YH, Zhou F, Chen XY, et al. Enhanced electrochemical activity and stability of LSCF cathodes by Mo doping for intermediate temperature solid oxide fuel cells. J Appl Electrochem 2021, 51: 425-433.
[30]
Develos-Bagarinao K, Ishiyama T, Kishimoto H, et al. Nanoengineering of cathode layers for solid oxide fuel cells to achieve superior power densities. Nat Commun 2021, 12: 3979.
[31]
Denny YR, Firmansyah T, Oh SK, et al. Effect of oxygen deficiency on electronic properties and local structure of amorphous tantalum oxide thin films. Mater Res Bull 2016, 82: 1-6.
[32]
Ren W, Yang GD, Feng AL, et al. Annealing effects on the optical and electrochemical properties of tantalum pentoxide films. J Adv Ceram 2021, 10: 704-713.
[33]
Wu HT, Hu RS, Zhou TT, et al. A novel efficient boron- doped LaFeO3 photocatalyst with large specific surface area for phenol degradation under simulated sunlight. CrystEngComm 2015, 17: 3859-3865.
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Publication history

Received: 24 March 2022
Revised: 20 June 2022
Accepted: 22 June 2022
Published: 13 July 2022
Issue date: August 2022

Copyright

© The Author(s) 2022.

Acknowledgements

This work is supported by the National Natural Science Foundation of China (No. 51975384), Guangdong Basic and Applied Basic Research Foundation (No. 2020A1515011547), and Shenzhen Fundamental Research Project (Nos. JCYJ20190808144009478, 20200731211324001).

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