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

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)643-646
Number of pages4
JournalChemistry Letters
Volume47
Issue number5
DOIs
Publication statusPublished - 2018 Jan 1

Fingerprint

Redox reactions
Hydrogen production
Oxides
Metals
Electric fields
Oxygen
Decomposition
Water
Hydrogen
Defects
Reaction rates
Doping (additives)

Keywords

  • Electric field
  • Hydrogen production
  • Redox

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Hydrogen production by water decomposition through redox reaction of ce-based metal oxide systems in electric field. / Ogino, Kentaro; Sasaki, Yusuke; Kurosawa, Yutaro; Ogo, Shuhei; Yabe, Tomohiro; Kondo, Wakichi; Ono, Taisuke; Kojima, Kunihiro; Sekine, Yasushi.

In: Chemistry Letters, Vol. 47, No. 5, 01.01.2018, p. 643-646.

Research output: Contribution to journalArticle

Ogino, K, Sasaki, Y, Kurosawa, Y, Ogo, S, Yabe, T, Kondo, W, Ono, T, Kojima, K & Sekine, Y 2018, 'Hydrogen production by water decomposition through redox reaction of ce-based metal oxide systems in electric field', Chemistry Letters, vol. 47, no. 5, pp. 643-646. https://doi.org/10.1246/cl.180055
Ogino, Kentaro ; Sasaki, Yusuke ; Kurosawa, Yutaro ; Ogo, Shuhei ; Yabe, Tomohiro ; Kondo, Wakichi ; Ono, Taisuke ; Kojima, Kunihiro ; Sekine, Yasushi. / Hydrogen production by water decomposition through redox reaction of ce-based metal oxide systems in electric field. In: Chemistry Letters. 2018 ; Vol. 47, No. 5. pp. 643-646.
@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",
year = "2018",
month = "1",
day = "1",
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 - 2018/1/1

Y1 - 2018/1/1

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

UR - http://www.scopus.com/inward/record.url?scp=85045514817&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045514817&partnerID=8YFLogxK

U2 - 10.1246/cl.180055

DO - 10.1246/cl.180055

M3 - Article

AN - SCOPUS:85045514817

VL - 47

SP - 643

EP - 646

JO - Chemistry Letters

JF - Chemistry Letters

SN - 0366-7022

IS - 5

ER -