Sustainable Hydrogen Production from Water Splitting on a Co3O4@LaCoO3 Core-Shell Redox Catalyst

被引：12

作者：

Lim, Hyun Suk ^{[1
]}

Kim, Minkyu ^{[2
]}

Kim, Yikyeom ^{[1
]}

Kim, Hyeon Seok ^{[1
]}

Kang, Dohyung ^{[2
]}

Lee, Minbeom ^{[1
]}

Jo, Ayeong ^{[1
]}

Lee, Jae W. ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol KAIST, Dept Chem & Biomol Engn, Daejeon 34141, South Korea

[2] Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, South Korea

来源：

ACS APPLIED ENERGY MATERIALS | 2022年 / 5卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

chemical looping; water splitting; hydrogen production; core-shell; density functional theory; METHANE; CERIA; OXIDATION; OXIDE;

D O I：

10.1021/acsaem.2c00662

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：

This work investigates a core-shell structured Co3O4@LaCoO3 redox catalyst for the production of hydrogen via chemical looping water splitting. Though having low oxygen carrying capacities, LaCoO3 facilitates H2O splitting by lowering the kinetic barrier and overall exothermicity compared to Co3O4, and covering the Co3O4 nanoparticle surface with LaCoO3 thereby overcomes the poor H-2 production activity of Co3O4. Since thermally stable LaCoO3 can suppress the sintering, applying the core-shell structure suppresses the aggregation of Co3O4 nanoparticles under cyclic redox. Thus, the core-shell structure redox catalyst can lead to both improved and sustainable H-2 productivity compared with that obtained using only Co3O4 or LaCoO3.

引用

页码：8437 / 8442

页数：6

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