Sustainable Hydrogen Production from Water Splitting on a Co3O4@LaCoO3Core-Shell Redox Catalyst

Hyun Suk Lim; Minkyu Kim; Yikyeom Kim; Hyeon Seok Kim; Dohyung Kang; Minbeom Lee; Ayeong Jo; Jae W. Lee

doi:10.1021/acsaem.2c00662

Sustainable Hydrogen Production from Water Splitting on a Co₃O₄@LaCoO₃Core-Shell Redox Catalyst

Hyun Suk Lim, Minkyu Kim, Yikyeom Kim, Hyeon Seok Kim, Dohyung Kang, Minbeom Lee, Ayeong Jo, Jae W. Lee

Dept. of Future Energy Convergence

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

This work investigates a core-shell structured Co₃O₄@LaCoO₃redox catalyst for the production of hydrogen via chemical looping water splitting. Though having low oxygen carrying capacities, LaCoO₃facilitates H₂O splitting by lowering the kinetic barrier and overall exothermicity compared to Co₃O₄, and covering the Co₃O₄nanoparticle surface with LaCoO₃thereby overcomes the poor H₂production activity of Co₃O₄. Since thermally stable LaCoO₃can suppress the sintering, applying the core-shell structure suppresses the aggregation of Co₃O₄nanoparticles under cyclic redox.

Original language	English
Pages (from-to)	8437-8442
Number of pages	6
Journal	ACS Applied Energy Materials
Volume	5
Issue number	7
DOIs	https://doi.org/10.1021/acsaem.2c00662
State	Published - 25 Jul 2022

Keywords

chemical looping
core-shell
density functional theory
hydrogen production
water splitting

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10.1021/acsaem.2c00662

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title = "Sustainable Hydrogen Production from Water Splitting on a Co3O4@LaCoO3Core-Shell Redox Catalyst",

abstract = "This work investigates a core-shell structured Co3O4@LaCoO3redox catalyst for the production of hydrogen via chemical looping water splitting. Though having low oxygen carrying capacities, LaCoO3facilitates H2O splitting by lowering the kinetic barrier and overall exothermicity compared to Co3O4, and covering the Co3O4nanoparticle surface with LaCoO3thereby overcomes the poor H2production activity of Co3O4. Since thermally stable LaCoO3can suppress the sintering, applying the core-shell structure suppresses the aggregation of Co3O4nanoparticles under cyclic redox.",

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AU - Lim, Hyun Suk

AU - Kim, Minkyu

AU - Kim, Yikyeom

AU - Kim, Hyeon Seok

AU - Kang, Dohyung

AU - Lee, Minbeom

AU - Jo, Ayeong

AU - Lee, Jae W.

PY - 2022/7/25

Y1 - 2022/7/25

N2 - This work investigates a core-shell structured Co3O4@LaCoO3redox catalyst for the production of hydrogen via chemical looping water splitting. Though having low oxygen carrying capacities, LaCoO3facilitates H2O splitting by lowering the kinetic barrier and overall exothermicity compared to Co3O4, and covering the Co3O4nanoparticle surface with LaCoO3thereby overcomes the poor H2production activity of Co3O4. Since thermally stable LaCoO3can suppress the sintering, applying the core-shell structure suppresses the aggregation of Co3O4nanoparticles under cyclic redox.

AB - This work investigates a core-shell structured Co3O4@LaCoO3redox catalyst for the production of hydrogen via chemical looping water splitting. Though having low oxygen carrying capacities, LaCoO3facilitates H2O splitting by lowering the kinetic barrier and overall exothermicity compared to Co3O4, and covering the Co3O4nanoparticle surface with LaCoO3thereby overcomes the poor H2production activity of Co3O4. Since thermally stable LaCoO3can suppress the sintering, applying the core-shell structure suppresses the aggregation of Co3O4nanoparticles under cyclic redox.

KW - chemical looping

KW - core-shell

KW - density functional theory

KW - hydrogen production

KW - water splitting

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M3 - Article

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Sustainable Hydrogen Production from Water Splitting on a Co₃O₄@LaCoO₃Core-Shell Redox Catalyst

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