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：10

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

页码：272 / 281

页数：10

共 56 条

[1] Durability of carbon nanofiber (CNF) & carbon nanotube (CNT) as catalyst support for Proton Exchange Membrane Fuel Cells [J].