(La,Sr)(Cr,Mn)O 3/GDC cathode for high temperature steam electrolysis and steam-carbon dioxide co-electrolysis

Xiangling Yue; John T S Irvine

doi:10.1016/j.ssi.2012.06.015

(La,Sr)(Cr,Mn)O 3/GDC cathode for high temperature steam electrolysis and steam-carbon dioxide co-electrolysis

Xiangling Yue^*, John T S Irvine

^*Corresponding author for this work

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

Abstract

A composite of (La,Sr)(Cr,Mn)O ₃/(Gd,Ce)O ₂ (LSCM/GDC) was evaluated as a cathode in a high temperature solid oxide electrolysis cell (SOEC) used for steam electrolysis and/or steam-carbon dioxide co-electrolysis. When the steam feed rate was smaller than 30 ml/min, the LSCM/GDC cathode is subject to large diffusion resistance from inadequate steam supply at steam concentration of 3-20%. Sigmoidal shaped I-V curves were thus observed for steam electrolysis, unlike when CO ₂ was present during reduction where smooth I-V characteristics were observed. With respect to steam-carbon dioxide co-electrolysis, the LSCM/GDC cathode showed lower performance than for CO ₂ electrolysis, due to insufficient steam content at a feed of 20% H ₂O-5% H ₂/Ar (10 ml/min) and CO ₂/CO 70/30 (20 ml/min) mixture.

Original language	English
Pages (from-to)	131-135
Number of pages	5
Journal	Solid State Ionics
Volume	225
DOIs	https://doi.org/10.1016/j.ssi.2012.06.015
Publication status	Published - 4 Oct 2012

Keywords

Co-electrolysis
LSCM/GDC cathode
Polarization resistance
SOEC
Steam transport

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@article{844ebc3457b84ba2a4d859ab94b0e125,

title = "(La,Sr)(Cr,Mn)O 3/GDC cathode for high temperature steam electrolysis and steam-carbon dioxide co-electrolysis",

abstract = "A composite of (La,Sr)(Cr,Mn)O 3/(Gd,Ce)O 2 (LSCM/GDC) was evaluated as a cathode in a high temperature solid oxide electrolysis cell (SOEC) used for steam electrolysis and/or steam-carbon dioxide co-electrolysis. When the steam feed rate was smaller than 30 ml/min, the LSCM/GDC cathode is subject to large diffusion resistance from inadequate steam supply at steam concentration of 3-20%. Sigmoidal shaped I-V curves were thus observed for steam electrolysis, unlike when CO 2 was present during reduction where smooth I-V characteristics were observed. With respect to steam-carbon dioxide co-electrolysis, the LSCM/GDC cathode showed lower performance than for CO 2 electrolysis, due to insufficient steam content at a feed of 20% H 2O-5% H 2/Ar (10 ml/min) and CO 2/CO 70/30 (20 ml/min) mixture.",

keywords = "Co-electrolysis, LSCM/GDC cathode, Polarization resistance, SOEC, Steam transport",

author = "Xiangling Yue and Irvine, {John T S}",

year = "2012",

month = oct,

day = "4",

doi = "10.1016/j.ssi.2012.06.015",

language = "English",

volume = "225",

pages = "131--135",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

}

TY - JOUR

T1 - (La,Sr)(Cr,Mn)O 3/GDC cathode for high temperature steam electrolysis and steam-carbon dioxide co-electrolysis

AU - Yue, Xiangling

AU - Irvine, John T S

PY - 2012/10/4

Y1 - 2012/10/4

N2 - A composite of (La,Sr)(Cr,Mn)O 3/(Gd,Ce)O 2 (LSCM/GDC) was evaluated as a cathode in a high temperature solid oxide electrolysis cell (SOEC) used for steam electrolysis and/or steam-carbon dioxide co-electrolysis. When the steam feed rate was smaller than 30 ml/min, the LSCM/GDC cathode is subject to large diffusion resistance from inadequate steam supply at steam concentration of 3-20%. Sigmoidal shaped I-V curves were thus observed for steam electrolysis, unlike when CO 2 was present during reduction where smooth I-V characteristics were observed. With respect to steam-carbon dioxide co-electrolysis, the LSCM/GDC cathode showed lower performance than for CO 2 electrolysis, due to insufficient steam content at a feed of 20% H 2O-5% H 2/Ar (10 ml/min) and CO 2/CO 70/30 (20 ml/min) mixture.

AB - A composite of (La,Sr)(Cr,Mn)O 3/(Gd,Ce)O 2 (LSCM/GDC) was evaluated as a cathode in a high temperature solid oxide electrolysis cell (SOEC) used for steam electrolysis and/or steam-carbon dioxide co-electrolysis. When the steam feed rate was smaller than 30 ml/min, the LSCM/GDC cathode is subject to large diffusion resistance from inadequate steam supply at steam concentration of 3-20%. Sigmoidal shaped I-V curves were thus observed for steam electrolysis, unlike when CO 2 was present during reduction where smooth I-V characteristics were observed. With respect to steam-carbon dioxide co-electrolysis, the LSCM/GDC cathode showed lower performance than for CO 2 electrolysis, due to insufficient steam content at a feed of 20% H 2O-5% H 2/Ar (10 ml/min) and CO 2/CO 70/30 (20 ml/min) mixture.

KW - Co-electrolysis

KW - LSCM/GDC cathode

KW - Polarization resistance

KW - SOEC

KW - Steam transport

UR - http://www.scopus.com/inward/record.url?scp=84867575126&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2012.06.015

DO - 10.1016/j.ssi.2012.06.015

M3 - Article

AN - SCOPUS:84867575126

SN - 0167-2738

VL - 225

SP - 131

EP - 135

JO - Solid State Ionics

JF - Solid State Ionics

ER -

(La,Sr)(Cr,Mn)O 3/GDC cathode for high temperature steam electrolysis and steam-carbon dioxide co-electrolysis

Abstract

Keywords

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