Bifunctional electrochemical properties of La0.8Sr0.2Co0.8M0.2O3-: δ (M = Ni, Fe, Mn, and Cu): Efficient elemental doping based on a structural and pH-dependent study

J. Cheng, P. Ganesan, Z. Wang, M. Zhang, G. Zhang, N. Maeda, J. Matsuda, M. Yamauchi, B. Chi, N. Nakashima

研究成果: ジャーナルへの寄稿学術誌査読

抄録

Perovskite oxides with a low cost and high catalytic activity are considered as suitable candidates for the oxygen evolution reaction (OER)/oxygen reduction reaction (ORR), but most of them favour only either the ORR or the OER. Besides, their underlying catalytic mechanisms are subject of an ongoing debate. Herein, La0.8Sr0.2CoO3-δ (LSC) was selected as a base perovskite oxide for doping different elements into its B-site to fabricate four different La0.8Sr0.2Co0.8M0.2O3-δ (LSCM; M = Ni, Fe, Mn, and Cu) perovskite oxides. Among the catalysts tested with and without multi-walled carbon nanotubes (MWNTs), La0.8Sr0.2Co0.8Fe0.2O3-δ (LSCF) outperformed any other catalysts in terms of both OER and ORR activity. The OER/ORR activity enhancement with LSCF is also discussed based on spectroscopic and microscopic analyses and lattice oxygen transportation.

本文言語英語
ページ(範囲)272-281
ページ数10
ジャーナルMaterials Advances
3
1
DOI
出版ステータス出版済み - 1月 7 2022

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 化学(その他)

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