Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2021 , Vol. 55 >Issue 9: 1049 - 1057

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2021.009

Effect of Preparation Process of La0.95FeO3-δ/C Composite Electrode on Preparation and Bifunctional Electrocatalytic Properties

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  • a. China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 200240, China
    b. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2021-01-11

  Online published: 2021-06-08

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Abstract

In order to optimize the bifunctional electrocatalytic performance of La0.95FeO3-δ, the effects and influencing mechanism of carbon morphology, electrode ink preparation, and catalyst loading on the bifunctional electrocatalytic performance of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) were investigated. The results show that compared with La0.95FeO3-δ, the catalytic activity of La0.95FeO3-δ/C is significantly improved. The bifunctional electrocatalytic performance of La0.95FeO3-δ/C is mainly dependent on carbon morphology and electrode ink preparation. An optimum bifunctional performance is achieved in a composite electrode with 0.6 mg/cm2 La0.95FeO3-δ and 0.12 mg/cm2 EC600JD prepared by ultrasonic dispersion, ball milling, and ultrasonic dispersion. The optimized La0.95FeO3-δ/C has an excellent bifunctional electrocatalytic performance, simple preparation, and low cost, which is expected to be applied in Li-O2 batteries.

Key words： LaFeO3 perovskite; oxygen reduction reaction(ORR); oxygen evolution reaction(OER); bifunctional electrocatalyst; electrocatalysis

Cite this article

HU Huanming, YANG Fan, ZHANG Junliang . Effect of Preparation Process of La0.95FeO3-δ/C Composite Electrode on Preparation and Bifunctional Electrocatalytic Properties[J]. Journal of Shanghai Jiaotong University, 2021 , 55(9) : 1049 -1057 . DOI: 10.16183/j.cnki.jsjtu.2021.009

References

[1] GRIMAUD A, DIAZ-MORALES O, HAN B, et al. Activating lattice oxygen redox reactions in metal oxides to catalyse oxygen evolution[J]. Nature Chemistry, 2017, 9(5):457-465.
[2] GASTEIGER H A, KOCHA S S, SOMPALLI B, et al. Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs[J]. Applied Catalysis B: Environmental, 2005, 56(1/2):9-35.
[3] TRASATTI S. Electrocatalysis in the anodic evolution of oxygen and chlorine[J]. Electrochimica Acta, 1984, 29(11):1503-1512.
[4] GNANAMUTHU D S, PETROCELLI J V. A gene-ralized expression for the tafel slope and the kinetics of oxygen reduction on noble metals and alloys[J]. Journal of the Electrochemical Society, 1967, 114(10):1036.
[5] JI Q Q, BI L, ZHANG J T, et al. The role of oxygen vacancies of ABO3 perovskite oxides in the oxygen reduction reaction[J]. Energy & Environmental Science, 2020, 13(5):1408-1428.
[6] ZHU Y L, ZHOU W, SHAO Z P. Perovskite/carbon composites: Applications in oxygen electrocatalysis[J]. Small, 2017, 13(12):1603793.
[7] SUNTIVICH J, GASTEIGER H A, YABUUCHI N, et al. Design principles for oxygen-reduction activity on perovskite oxide catalysts for fuel cells and metal-air batteries[J]. Nature Chemistry, 2011, 3(7):546-550.
[8] SUNTIVICH J, MAY K J, GASTEIGER H A, et al. A perovskite oxide optimized for oxygen evolution catalysis from molecular orbital principles[J]. Science, 2011, 334(6061):1383-1385.
[9] MEFFORD J T, RONG X, ABAKUMOV A M, et al. Water electrolysis on La1-xSrxCoO3-δ perovskite electrocatalysts[J]. Nature Communications, 2016, 7(1):1-11.
[10] XU J J, WANG Z L, XU D, et al. 3D ordered macroporous LaFeO3 as efficient electrocatalyst for Li-O2 batteries with enhanced rate capability and cyclic performance[J]. Energy & Environmental Science, 2014, 7(7):2213.
[11] 张晓茹, 许跃峰, 沈守宇, 等. 锂氧电池双功能还原石墨烯-LaFeO3复合纳米催化剂的制备及性能[J]. 物理化学学报, 2017, 33(11):2237-2244.
[11] ZHANG Xiaoru, XU Yuefeng, SHEN Shouyu, et al. Reduced graphene oxide-LaFeO3 composite nanomaterials as bifunctional catalyst for rechargeable lithium-oxygen batteries[J]. Acta Physico-Chimica Sinica, 2017, 33(11):2237-2244.
[12] ZHU Y L, ZHOU W, YU J, et al. Enhancing electrocatalytic activity of perovskite oxides by tuning cation deficiency for oxygen reduction and evolution reactions[J]. Chemistry of Materials, 2016, 28(6):1691-1697.
[13] LENG J, LI S, WANG Z S, et al. Synjournal of ultrafine lanthanum ferrite (LaFeO3) fibers via electrospinning[J]. Materials Letters, 2010, 64(17):1912-1914.
[14] XU J J, WANG Z L, XU D, et al. 3D ordered macroporous LaFeO3 as efficient electrocatalyst for Li-O2 batteries with enhanced rate capability and cyclic performance[J]. Energy & Environmental Science, 2014, 7(7):2213.
[15] GAO R, CHEN Q Z, ZHANG W J, et al. Oxygen defects-engineered LaFeO3-x nanosheets as efficient electrocatalysts for lithium-oxygen battery[J]. Journal of Catalysis, 2020, 384:199-207.
[16] ZHU Y L, ZHOU W, YU J, et al. Enhancing electrocatalytic activity of perovskite oxides by tuning cation deficiency for oxygen reduction and evolution reactions[J]. Chemistry of Materials, 2016, 28(6):1691-1697.
[17] LI Z S, LÜ L, WANG J S, et al. Engineering phosphorus-doped LaFeO3-δ perovskite oxide as robust bifunctional oxygen electrocatalysts in alkaline solutions[J]. Nano Energy, 2018, 47:199-209.
[18] KRIEG A S, KING J A, JASZCZAK D C, et al. Tensile and conductivity properties of epoxy composites containing carbon black and graphene nanoplatelets[J]. Journal of Composite Materials, 2018, 52(28):3909-3918.
[19] PARK H W, LEE D U, ZAMANI P, et al. Electrospun porous nanorod perovskite oxide/nitrogen-doped graphene composite as a bi-functional catalyst for metal air batteries[J]. Nano Energy, 2014, 10:192-200.
[20] RINCÓN R A, MASA J, MEHRPOUR S, et al. Activation of oxygen evolving perovskites for oxygen reduction by functionalization with Fe-Nx/C groups[J]. Chemical Communications, 2014, 50(94):14760-14762.
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