Regulating Lattice Oxygen of Co3O4/CeO2 Heterojunction Nanonetworks for Enhanced Oxygen Evolution

被引：9

作者：

Zhao, Ziyu ^{[1
,2
,3
]}

Yu, Meng ^{[2
]}

Liu, Yawen ^{[2
]}

Zeng, Tao ^{[1
]}

Ye, Rongkai ^{[2
]}

Liu, Yuchan ^{[2
]}

Hu, Jianqiang ^{[2
]}

Li, Aiqing ^{[1
]}

机构：

[1] Southern Med Univ, Natl Clin Res Ctr Kidney Dis, Guangdong Prov Key Lab Renal Failure Res, Nanfang Hosp,State Key Lab Organ Failure Res,Guang, Guangzhou 510515, Peoples R China

[2] South China Univ Technol, Sch Chem & Chem Engn, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510640, Peoples R China

[3] China Tobacco Hunan Ind Co Ltd, Technol Ctr, Changsha 410007, Peoples R China

来源：

ADVANCED ENERGY AND SUSTAINABILITY RESEARCH | 2023年 / 4卷 / 12期

关键词：

electrocatalysis; heterojunctions; metallic oxides; oxygen evolution reaction; rare-earth doping; ELECTRONIC-STRUCTURE; CATALYST; SURFACE; ELECTROCATALYSTS; NANOSHEETS; VACANCIES; NANORODS;

D O I：

10.1002/aesr.202300123

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Developing efficient and cost-effective electrocatalysts as substitutes for noble metals remains a big challenge, which demands significant advancements in both material designing and mechanistic understanding. Herein, Co3O4/CeO2 heterojunction nanonetworks are successfully synthesized through metal organic framework precursor. Notably, Co3O4/CeO2 heterojunctions can effectively regulate electronic structure of Co3O4, thus inducing oxygen atom from Co3O4 lattice to participating in oxygen evolution reaction (OER) via lattice oxygen-mediated mechanism, which reduces reaction overpotential. Additionally, the porous network structure can facilitate electrolyte transfer and provide more active sites for electrocatalytic reactions. Consequently, Co3O4/CeO2 heterojunction nanonetworks exhibit great electrocatalytic performance and high durability, requiring only an OER overpotential of 259 mV at current density of 100 mA cm(-2 )in 1 M KOH, markedly outperforming Co3O4 nanocatalysts (309 mV) and showing promising potential as substitutable non-noble OER catalysts.

引用

页数：7

共 43 条

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