Highly active oxide cathode of La(Sr)Fe(Mn)O3 for intermediate temperature CO2 and CO2-H2O co-electrolysis using LSGM electrolyte

Tatsumi Ishihara, Shijing Wang, Kuan Ting Wu

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Electrochemical conversion of carbon dioxide to carbon monoxide (CO2 → CO) is a potential step in the desirable transformation of the greenhouse gas to fuel or useful chemicals. In this study, the electrochemical conversion of CO2 to CO and H2O to H2 on an oxide cathode was studied in a solid oxide electrolysis cell (SOEC) by using a LaGaO3-based electrolyte (La0.9Sr0.1Ga0.8Mg0.2O3, LSGM) at elevated temperature (i.e. 973–1173 K), which is a good candidate as electrolyte for electrolysis cell because of the high oxide ion conductivity at intermediate temperatures. Although metal, in particular, Ni is widely used as cathode of CO2 electrolysis cell, it was found that a LaFeO3 − δ–based perovskite material as cathode (La0.6Sr0.4Fe0.8Mn0.2O3 − δ, LSFM6482) shows much higher activity and selectivity to CO2 electrolysis and a current density of CO2 electrolysis is achieved with a value of 0.52 A/cm2 at 1.6 V and 1173 K. In contrast, substitution of Co, Cu, and Ni decrease the anodic performance of LaFeO3 resulting in the decrease in electrolysis current. A cell using the LSFM6482 oxide cathode has a high selectivity for the electrolysis of CO2 to CO without carbon formation. In this study, application of LSGM6482 to CO2-H2O co-electrolysis was also studied and it was found that CO2-H2O co-electrolysis was successfully proceeded and CO/H2 syngas with ca. 1/1 ratio was obtained from CO2/H2O = 1/1.

Original languageEnglish
Pages (from-to)60-63
Number of pages4
JournalSolid State Ionics
Volume299
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

electrolysis
Electrolysis
Oxides
Electrolytes
Cathodes
cathodes
electrolytes
oxides
Carbon Monoxide
Temperature
temperature
cells
Regenerative fuel cells
selectivity
synthesis gas
greenhouses
Greenhouse gases
Carbon Dioxide
Carbon monoxide
Perovskite

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Highly active oxide cathode of La(Sr)Fe(Mn)O3 for intermediate temperature CO2 and CO2-H2O co-electrolysis using LSGM electrolyte. / Ishihara, Tatsumi; Wang, Shijing; Wu, Kuan Ting.

In: Solid State Ionics, Vol. 299, 01.01.2017, p. 60-63.

Research output: Contribution to journalArticle

@article{66a02d3e3bfb48c9842b2eeae06efa44,
title = "Highly active oxide cathode of La(Sr)Fe(Mn)O3 for intermediate temperature CO2 and CO2-H2O co-electrolysis using LSGM electrolyte",
abstract = "Electrochemical conversion of carbon dioxide to carbon monoxide (CO2 → CO) is a potential step in the desirable transformation of the greenhouse gas to fuel or useful chemicals. In this study, the electrochemical conversion of CO2 to CO and H2O to H2 on an oxide cathode was studied in a solid oxide electrolysis cell (SOEC) by using a LaGaO3-based electrolyte (La0.9Sr0.1Ga0.8Mg0.2O3, LSGM) at elevated temperature (i.e. 973–1173 K), which is a good candidate as electrolyte for electrolysis cell because of the high oxide ion conductivity at intermediate temperatures. Although metal, in particular, Ni is widely used as cathode of CO2 electrolysis cell, it was found that a LaFeO3 − δ–based perovskite material as cathode (La0.6Sr0.4Fe0.8Mn0.2O3 − δ, LSFM6482) shows much higher activity and selectivity to CO2 electrolysis and a current density of CO2 electrolysis is achieved with a value of 0.52 A/cm2 at 1.6 V and 1173 K. In contrast, substitution of Co, Cu, and Ni decrease the anodic performance of LaFeO3 resulting in the decrease in electrolysis current. A cell using the LSFM6482 oxide cathode has a high selectivity for the electrolysis of CO2 to CO without carbon formation. In this study, application of LSGM6482 to CO2-H2O co-electrolysis was also studied and it was found that CO2-H2O co-electrolysis was successfully proceeded and CO/H2 syngas with ca. 1/1 ratio was obtained from CO2/H2O = 1/1.",
author = "Tatsumi Ishihara and Shijing Wang and Wu, {Kuan Ting}",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.ssi.2016.09.013",
language = "English",
volume = "299",
pages = "60--63",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier",

}

TY - JOUR

T1 - Highly active oxide cathode of La(Sr)Fe(Mn)O3 for intermediate temperature CO2 and CO2-H2O co-electrolysis using LSGM electrolyte

AU - Ishihara, Tatsumi

AU - Wang, Shijing

AU - Wu, Kuan Ting

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Electrochemical conversion of carbon dioxide to carbon monoxide (CO2 → CO) is a potential step in the desirable transformation of the greenhouse gas to fuel or useful chemicals. In this study, the electrochemical conversion of CO2 to CO and H2O to H2 on an oxide cathode was studied in a solid oxide electrolysis cell (SOEC) by using a LaGaO3-based electrolyte (La0.9Sr0.1Ga0.8Mg0.2O3, LSGM) at elevated temperature (i.e. 973–1173 K), which is a good candidate as electrolyte for electrolysis cell because of the high oxide ion conductivity at intermediate temperatures. Although metal, in particular, Ni is widely used as cathode of CO2 electrolysis cell, it was found that a LaFeO3 − δ–based perovskite material as cathode (La0.6Sr0.4Fe0.8Mn0.2O3 − δ, LSFM6482) shows much higher activity and selectivity to CO2 electrolysis and a current density of CO2 electrolysis is achieved with a value of 0.52 A/cm2 at 1.6 V and 1173 K. In contrast, substitution of Co, Cu, and Ni decrease the anodic performance of LaFeO3 resulting in the decrease in electrolysis current. A cell using the LSFM6482 oxide cathode has a high selectivity for the electrolysis of CO2 to CO without carbon formation. In this study, application of LSGM6482 to CO2-H2O co-electrolysis was also studied and it was found that CO2-H2O co-electrolysis was successfully proceeded and CO/H2 syngas with ca. 1/1 ratio was obtained from CO2/H2O = 1/1.

AB - Electrochemical conversion of carbon dioxide to carbon monoxide (CO2 → CO) is a potential step in the desirable transformation of the greenhouse gas to fuel or useful chemicals. In this study, the electrochemical conversion of CO2 to CO and H2O to H2 on an oxide cathode was studied in a solid oxide electrolysis cell (SOEC) by using a LaGaO3-based electrolyte (La0.9Sr0.1Ga0.8Mg0.2O3, LSGM) at elevated temperature (i.e. 973–1173 K), which is a good candidate as electrolyte for electrolysis cell because of the high oxide ion conductivity at intermediate temperatures. Although metal, in particular, Ni is widely used as cathode of CO2 electrolysis cell, it was found that a LaFeO3 − δ–based perovskite material as cathode (La0.6Sr0.4Fe0.8Mn0.2O3 − δ, LSFM6482) shows much higher activity and selectivity to CO2 electrolysis and a current density of CO2 electrolysis is achieved with a value of 0.52 A/cm2 at 1.6 V and 1173 K. In contrast, substitution of Co, Cu, and Ni decrease the anodic performance of LaFeO3 resulting in the decrease in electrolysis current. A cell using the LSFM6482 oxide cathode has a high selectivity for the electrolysis of CO2 to CO without carbon formation. In this study, application of LSGM6482 to CO2-H2O co-electrolysis was also studied and it was found that CO2-H2O co-electrolysis was successfully proceeded and CO/H2 syngas with ca. 1/1 ratio was obtained from CO2/H2O = 1/1.

UR - http://www.scopus.com/inward/record.url?scp=84994478218&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84994478218&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2016.09.013

DO - 10.1016/j.ssi.2016.09.013

M3 - Article

AN - SCOPUS:84994478218

VL - 299

SP - 60

EP - 63

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

ER -