Hydrogen production by water decomposition through redox reaction of ce-based metal oxide systems in electric field

Kentaro Ogino; Yusuke Sasaki; Yutaro Kurosawa; Shuhei Ogo; Tomohiro Yabe; Wakichi Kondo; Taisuke Ono; Kunihiro Kojima; Yasushi Sekine

doi:10.1246/cl.180055

Hydrogen production by water decomposition through redox reaction of ce-based metal oxide systems in electric field

Kentaro Ogino, Yusuke Sasaki, Yutaro Kurosawa, Shuhei Ogo, Tomohiro Yabe, Wakichi Kondo, Taisuke Ono, Kunihiro Kojima, Yasushi Sekine^*

^*Corresponding author for this work

School of Advanced Science and Engineering

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

3 Citations (Scopus)

Abstract

We investigated a highly active hydrogen production system by decomposition of water through the redox reaction of metal oxide at 623 K in an electric field (EF). Although Ce_0.67Cr_0.33O₂ oxide showed high activity in the EF for oxygen release with the formation of lattice oxygen defects, it showed no hydrogen production activity by the regeneration of lattice oxygen defects with water. However, addition of Pd into the Ce_0.67Cr_0.33O₂ structure promoted the hydrogen formation rate while maintaining its oxygen release activity. Results of optimization of the doping Pd amount demonstrated that 5 mol% Pd-doped oxide (Ce_0.62Cr_0.33Pd_0.05O₂) had the highest oxygen release rate and hydrogen formation rate. Doped Pd contributes to lattice strain induction and thereby increases the reaction rates.

Original language	English
Pages (from-to)	643-646
Number of pages	4
Journal	Chemistry Letters
Volume	47
Issue number	5
DOIs	https://doi.org/10.1246/cl.180055
Publication status	Published - 2018

Keywords

Electric field
Hydrogen production
Redox

ASJC Scopus subject areas

Chemistry(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1246/cl.180055

Cite this

@article{008a94e78d4d4788a3b316a9e1a70a80,

title = "Hydrogen production by water decomposition through redox reaction of ce-based metal oxide systems in electric field",

abstract = "We investigated a highly active hydrogen production system by decomposition of water through the redox reaction of metal oxide at 623 K in an electric field (EF). Although Ce0.67Cr0.33O2 oxide showed high activity in the EF for oxygen release with the formation of lattice oxygen defects, it showed no hydrogen production activity by the regeneration of lattice oxygen defects with water. However, addition of Pd into the Ce0.67Cr0.33O2 structure promoted the hydrogen formation rate while maintaining its oxygen release activity. Results of optimization of the doping Pd amount demonstrated that 5 mol% Pd-doped oxide (Ce0.62Cr0.33Pd0.05O2) had the highest oxygen release rate and hydrogen formation rate. Doped Pd contributes to lattice strain induction and thereby increases the reaction rates.",

keywords = "Electric field, Hydrogen production, Redox",

author = "Kentaro Ogino and Yusuke Sasaki and Yutaro Kurosawa and Shuhei Ogo and Tomohiro Yabe and Wakichi Kondo and Taisuke Ono and Kunihiro Kojima and Yasushi Sekine",

note = "Publisher Copyright: {\textcopyright} 2018 The Chemical Society of Japan.",

year = "2018",

doi = "10.1246/cl.180055",

language = "English",

volume = "47",

pages = "643--646",

journal = "Chemistry Letters",

issn = "0366-7022",

publisher = "Chemical Society of Japan",

number = "5",

}

TY - JOUR

T1 - Hydrogen production by water decomposition through redox reaction of ce-based metal oxide systems in electric field

AU - Ogino, Kentaro

AU - Sasaki, Yusuke

AU - Kurosawa, Yutaro

AU - Ogo, Shuhei

AU - Yabe, Tomohiro

AU - Kondo, Wakichi

AU - Ono, Taisuke

AU - Kojima, Kunihiro

AU - Sekine, Yasushi

PY - 2018

Y1 - 2018

N2 - We investigated a highly active hydrogen production system by decomposition of water through the redox reaction of metal oxide at 623 K in an electric field (EF). Although Ce0.67Cr0.33O2 oxide showed high activity in the EF for oxygen release with the formation of lattice oxygen defects, it showed no hydrogen production activity by the regeneration of lattice oxygen defects with water. However, addition of Pd into the Ce0.67Cr0.33O2 structure promoted the hydrogen formation rate while maintaining its oxygen release activity. Results of optimization of the doping Pd amount demonstrated that 5 mol% Pd-doped oxide (Ce0.62Cr0.33Pd0.05O2) had the highest oxygen release rate and hydrogen formation rate. Doped Pd contributes to lattice strain induction and thereby increases the reaction rates.

AB - We investigated a highly active hydrogen production system by decomposition of water through the redox reaction of metal oxide at 623 K in an electric field (EF). Although Ce0.67Cr0.33O2 oxide showed high activity in the EF for oxygen release with the formation of lattice oxygen defects, it showed no hydrogen production activity by the regeneration of lattice oxygen defects with water. However, addition of Pd into the Ce0.67Cr0.33O2 structure promoted the hydrogen formation rate while maintaining its oxygen release activity. Results of optimization of the doping Pd amount demonstrated that 5 mol% Pd-doped oxide (Ce0.62Cr0.33Pd0.05O2) had the highest oxygen release rate and hydrogen formation rate. Doped Pd contributes to lattice strain induction and thereby increases the reaction rates.

KW - Electric field

KW - Hydrogen production

KW - Redox

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U2 - 10.1246/cl.180055

DO - 10.1246/cl.180055

M3 - Article

AN - SCOPUS:85045514817

SN - 0366-7022

VL - 47

SP - 643

EP - 646

JO - Chemistry Letters

JF - Chemistry Letters

IS - 5

ER -

Hydrogen production by water decomposition through redox reaction of ce-based metal oxide systems in electric field

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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