Synthesis of High-Entropy Perovskite Hydroxides as Bifunctional Electrocatalysts for Oxygen Evolution Reaction and Oxygen Reduction Reaction

被引：2

作者：

Chae, Sangwoo ^{[1
]}

Shio, Akihito ^{[2
]}

Kishida, Tomoya ^{[2
]}

Furutono, Kosuke ^{[2
]}

Kojima, Yumi ^{[2
]}

Panomsuwan, Gasidit ^{[3
]}

Ishizaki, Takahiro ^{[4
]}

机构：

[1] Shibaura Inst Technol, SIT Res Labs, 3-7-5 Toyosu,Koto Ku, Tokyo 1358548, Japan

[2] Shibaura Inst Technol, Grad Sch Engn & Sci, Mat Sci & Engn, 3-7-5 Toyosu,Koto Ku, Tokyo 1358548, Japan

[3] Kasetsart Univ, Fac Engn, Dept Mat Engn, Bangkok 10900, Thailand

[4] Shibaura Inst Technol, Coll Engn, 3-7-5 Toyosu,Koto Ku, Tokyo 1358548, Japan

来源：

MATERIALS | 2024年 / 17卷 / 12期

基金：

日本科学技术振兴机构; 日本学术振兴会;

关键词：

high-entropy perovskite hydroxides; bifunctional electrocatalyst; oxygen reduction reaction; oxygen evolution reaction; LI-AIR; PERFORMANCE; VACANCIES;

D O I：

10.3390/ma17122963

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Oxygen reduction reaction (ORR) and oxygen evolutionc reaction (OER) are important chemical reactions for a rechargeable lithium-oxygen battery (LOB). Recently, high-entropy alloys and oxides have attracted much attention because they showed good electrocatalytic performance for oxygen evolution reaction (OER) and/or oxygen reduction reaction (ORR). In this study, we aimed to synthesize and characterize CoSn(OH)6 and two types of high-entropy perovskite hydroxides, that is, (Co0.2Cu0.2Fe0.2Mn0.2Mg0.2)Sn(OH)6 (CCFMMSOH) and (Co0.2Cu0.2Fe0.2Mn0.2Ni0.2)Sn(OH)6 (CCFMNSOH). TEM observation and XRD measurements revealed that the high-entropy hydroxides CCFMMSOH and CCFMNSOH had cubic crystals with sides of approximately 150-200 nm and crystal structures similar to those of perovskite-type CSOH. LSV measurement results showed that the high-entropy hydroxides CCFMMSOH and CCFMNSOH showed bifunctional catalytic functions for the ORR and OER. CCFMNSOH showed better catalytic performance than CCFMMSOH.

引用

页数：12

共 26 条

[1]

Aurbach D, 2016, NAT ENERGY, V1, DOI [10.1038/NENERGY.2016.128, 10.1038/nenergy.2016.128]

[2]

Bruce PG, 2012, NAT MATER, V11, P19, DOI [10.1038/nmat3191, 10.1038/NMAT3191]

[3] Continuous strain tuning of oxygen evolution catalysts with anisotropic thermal expansion [J].