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

被引：8
|
作者：
Cheng, J. [1 ,2 ]
Ganesan, P. [1 ]
Wang, Z. [2 ]
Zhang, M. [3 ,4 ]
Zhang, G. [5 ]
Maeda, N. [1 ]
Matsuda, J. [1 ,6 ]
Yamauchi, M. [1 ,7 ]
Chi, B. [2 ]
Nakashima, N. [1 ]
机构：
[1] Kyushu Univ, Int Inst Carbon Neutral Energy Res I2CNER, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[2] Huazhong Univ Sci & Technol, Ctr Fuel Cell Innovat, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
[3] Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Peoples R China
[4] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, Fuzhou 350002, Peoples R China
[5] Univ Tokyo, Grad Sch Engn, Dept Appl Chem, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
[6] Kyushu Univ, Int Res Ctr Hydrogen Energy, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[7] Tohoku Univ, Adv Inst Mat Res WPI AIMR, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan
来源：
MATERIALS ADVANCES | 2022年 / 3卷 / 01期
基金：
日本科学技术振兴机构;
关键词：
OXYGEN REDUCTION REACTION; PEROVSKITE OXIDES; EVOLUTION REACTION; LACOO3; PEROVSKITE; HIGH-PERFORMANCE; ELECTROCATALYSTS; CATALYST; AIR; CO; LA0.6SR0.4CO0.2FE0.8O3;
D O I：
10.1039/d1ma00632k
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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-delta (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-delta (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-delta (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.
引用
收藏
页码：272 / 281
页数：10
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