Intermediate temperature steam electrolysis using strontium zirconate-based protonic conductors

Takaaki Sakai; Shotaro Matsushita; Hiroshige Matsumoto; Sachio Okada; Shinichi Hashimoto; Tatsumi Ishihara

doi:10.1016/j.ijhydene.2008.10.011

Intermediate temperature steam electrolysis using strontium zirconate-based protonic conductors

Takaaki Sakai, Shotaro Matsushita, Hiroshige Matsumoto, Sachio Okada, Shinichi Hashimoto, Tatsumi Ishihara

ENV - Environmental Studies for Advanced Society

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

56 Citations (Scopus)

Abstract

Steam electrolysis using SrZr_0.9Y_0.1O_3-α (SZY-91) electrolyte was investigated. Different electrode materials, i.e., porous platinum, Sr_0.5Sm_0.5CoO₃ (SSC-55) for the anode and nickel for the cathode were examined in order to achieve better energy performance. The electrodes had poor electrode activity when platinum was used for both the anode and the cathode, while the SSC-55 anode displayed significantly low overpotentials and the nickel cathode exhibited low overpotentials upon the introduction of an SrCe_0.95Yb_0.05O_3-α (SCYb) interlayer. Moreover, a partial substitution of cerium for zirconium in the strontium zirconate electrolyte, i.e., SrZr_0.5Ce_0.4Y_0.1O_3-α (SZCY-541), was found to be effective for improving the current efficiency of the hydrogen evolution rate. Accordingly, the cell SSC-55|SZCY-541|SCYb|Ni exhibited much higher energy efficiency for the steam electrolysis than the Pt|SZY-91|Pt cell.

Original language	English
Pages (from-to)	56-63
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	34
Issue number	1
DOIs	https://doi.org/10.1016/j.ijhydene.2008.10.011
Publication status	Published - 2009 Jan

Keywords

Oxide anode
Steam electrolysis
Strontium cerate interlayer
Strontium zirconate

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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10.1016/j.ijhydene.2008.10.011

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title = "Intermediate temperature steam electrolysis using strontium zirconate-based protonic conductors",

abstract = "Steam electrolysis using SrZr0.9Y0.1O3-α (SZY-91) electrolyte was investigated. Different electrode materials, i.e., porous platinum, Sr0.5Sm0.5CoO3 (SSC-55) for the anode and nickel for the cathode were examined in order to achieve better energy performance. The electrodes had poor electrode activity when platinum was used for both the anode and the cathode, while the SSC-55 anode displayed significantly low overpotentials and the nickel cathode exhibited low overpotentials upon the introduction of an SrCe0.95Yb0.05O3-α (SCYb) interlayer. Moreover, a partial substitution of cerium for zirconium in the strontium zirconate electrolyte, i.e., SrZr0.5Ce0.4Y0.1O3-α (SZCY-541), was found to be effective for improving the current efficiency of the hydrogen evolution rate. Accordingly, the cell SSC-55|SZCY-541|SCYb|Ni exhibited much higher energy efficiency for the steam electrolysis than the Pt|SZY-91|Pt cell.",

keywords = "Oxide anode, Steam electrolysis, Strontium cerate interlayer, Strontium zirconate",

author = "Takaaki Sakai and Shotaro Matsushita and Hiroshige Matsumoto and Sachio Okada and Shinichi Hashimoto and Tatsumi Ishihara",

note = "Funding Information: This study was supported by the Industrial Technology Research Grant Program in 06A41502c from the New Energy and Industrial Technology Development Organization (NEDO) of Japan. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

year = "2009",

month = jan,

doi = "10.1016/j.ijhydene.2008.10.011",

language = "English",

volume = "34",

pages = "56--63",

journal = "International Journal of Hydrogen Energy",

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T1 - Intermediate temperature steam electrolysis using strontium zirconate-based protonic conductors

AU - Sakai, Takaaki

AU - Matsushita, Shotaro

AU - Matsumoto, Hiroshige

AU - Okada, Sachio

AU - Hashimoto, Shinichi

AU - Ishihara, Tatsumi

N1 - Funding Information: This study was supported by the Industrial Technology Research Grant Program in 06A41502c from the New Energy and Industrial Technology Development Organization (NEDO) of Japan. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2009/1

Y1 - 2009/1

N2 - Steam electrolysis using SrZr0.9Y0.1O3-α (SZY-91) electrolyte was investigated. Different electrode materials, i.e., porous platinum, Sr0.5Sm0.5CoO3 (SSC-55) for the anode and nickel for the cathode were examined in order to achieve better energy performance. The electrodes had poor electrode activity when platinum was used for both the anode and the cathode, while the SSC-55 anode displayed significantly low overpotentials and the nickel cathode exhibited low overpotentials upon the introduction of an SrCe0.95Yb0.05O3-α (SCYb) interlayer. Moreover, a partial substitution of cerium for zirconium in the strontium zirconate electrolyte, i.e., SrZr0.5Ce0.4Y0.1O3-α (SZCY-541), was found to be effective for improving the current efficiency of the hydrogen evolution rate. Accordingly, the cell SSC-55|SZCY-541|SCYb|Ni exhibited much higher energy efficiency for the steam electrolysis than the Pt|SZY-91|Pt cell.

AB - Steam electrolysis using SrZr0.9Y0.1O3-α (SZY-91) electrolyte was investigated. Different electrode materials, i.e., porous platinum, Sr0.5Sm0.5CoO3 (SSC-55) for the anode and nickel for the cathode were examined in order to achieve better energy performance. The electrodes had poor electrode activity when platinum was used for both the anode and the cathode, while the SSC-55 anode displayed significantly low overpotentials and the nickel cathode exhibited low overpotentials upon the introduction of an SrCe0.95Yb0.05O3-α (SCYb) interlayer. Moreover, a partial substitution of cerium for zirconium in the strontium zirconate electrolyte, i.e., SrZr0.5Ce0.4Y0.1O3-α (SZCY-541), was found to be effective for improving the current efficiency of the hydrogen evolution rate. Accordingly, the cell SSC-55|SZCY-541|SCYb|Ni exhibited much higher energy efficiency for the steam electrolysis than the Pt|SZY-91|Pt cell.

KW - Oxide anode

KW - Steam electrolysis

KW - Strontium cerate interlayer

KW - Strontium zirconate

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Intermediate temperature steam electrolysis using strontium zirconate-based protonic conductors

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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