Intermediate temperature CO2 electrolysis by using La0.9Sr0.1Ga0.8Mg0.2O3 oxide ion conductor

Shijing Wang; Tatsumi Ishihara

doi:10.2355/isijinternational.55.381

Intermediate temperature CO₂ electrolysis by using La_0.9Sr_0.1Ga_0.8Mg_0.2O₃ oxide ion conductor

Shijing Wang, Tatsumi Ishihara

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

4 Citations (Scopus)

Abstract

Solid oxide electrolysis cell for electrolysis of CO₂ to CO was studied with the cell using LaGaO₃-based electrolyte at the intermediate temperature (i.e. 973-1 173 K). Various metal additives to Ni were examined for cathode to CO₂ reduction and it was fund that Ni added with Fe shows high activity and the current density of 1.5 A/cm² was achieved at 1.6 V and 1 073 K on Ni-Fe (9:1) cathode. Improved electrolysis activity was explained by the expanded reaction site which may be assigned the fine particle of Ni. Furthermore, effects of additives to Ni cathode were studied and it was found that the electrolysis current could be much improved by addition of Fe to Ni. Effects of oxide ion conductor mixing with Ni-Fe were further studied and it was found that mixing La_0.6Sr_0.4Fe_0.9Mn0.₁O₃ with Ni-Fe bimetal is the most effective for achieving high electrolysis current of CO₂ of 2.07 A/cm² at 1.6 V and 1 073 K.

Original language	English
Pages (from-to)	381-386
Number of pages	6
Journal	isij international
Volume	55
Issue number	2
DOIs	https://doi.org/10.2355/isijinternational.55.381
Publication status	Published - 2015

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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@article{48cfb32733f1424d9a644b35c6a03013,

title = "Intermediate temperature CO2 electrolysis by using La0.9Sr0.1Ga0.8Mg0.2O3 oxide ion conductor",

abstract = "Solid oxide electrolysis cell for electrolysis of CO2 to CO was studied with the cell using LaGaO3-based electrolyte at the intermediate temperature (i.e. 973-1 173 K). Various metal additives to Ni were examined for cathode to CO2 reduction and it was fund that Ni added with Fe shows high activity and the current density of 1.5 A/cm2 was achieved at 1.6 V and 1 073 K on Ni-Fe (9:1) cathode. Improved electrolysis activity was explained by the expanded reaction site which may be assigned the fine particle of Ni. Furthermore, effects of additives to Ni cathode were studied and it was found that the electrolysis current could be much improved by addition of Fe to Ni. Effects of oxide ion conductor mixing with Ni-Fe were further studied and it was found that mixing La0.6Sr0.4Fe0.9Mn0.1O3 with Ni-Fe bimetal is the most effective for achieving high electrolysis current of CO2 of 2.07 A/cm2 at 1.6 V and 1 073 K.",

author = "Shijing Wang and Tatsumi Ishihara",

note = "Publisher Copyright: {\textcopyright} 2015 ISIJ.",

year = "2015",

doi = "10.2355/isijinternational.55.381",

language = "English",

volume = "55",

pages = "381--386",

journal = "Transactions of the Iron and Steel Institute of Japan",

issn = "0915-1559",

publisher = "Iron and Steel Institute of Japan",

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TY - JOUR

T1 - Intermediate temperature CO2 electrolysis by using La0.9Sr0.1Ga0.8Mg0.2O3 oxide ion conductor

AU - Wang, Shijing

AU - Ishihara, Tatsumi

PY - 2015

Y1 - 2015

N2 - Solid oxide electrolysis cell for electrolysis of CO2 to CO was studied with the cell using LaGaO3-based electrolyte at the intermediate temperature (i.e. 973-1 173 K). Various metal additives to Ni were examined for cathode to CO2 reduction and it was fund that Ni added with Fe shows high activity and the current density of 1.5 A/cm2 was achieved at 1.6 V and 1 073 K on Ni-Fe (9:1) cathode. Improved electrolysis activity was explained by the expanded reaction site which may be assigned the fine particle of Ni. Furthermore, effects of additives to Ni cathode were studied and it was found that the electrolysis current could be much improved by addition of Fe to Ni. Effects of oxide ion conductor mixing with Ni-Fe were further studied and it was found that mixing La0.6Sr0.4Fe0.9Mn0.1O3 with Ni-Fe bimetal is the most effective for achieving high electrolysis current of CO2 of 2.07 A/cm2 at 1.6 V and 1 073 K.

AB - Solid oxide electrolysis cell for electrolysis of CO2 to CO was studied with the cell using LaGaO3-based electrolyte at the intermediate temperature (i.e. 973-1 173 K). Various metal additives to Ni were examined for cathode to CO2 reduction and it was fund that Ni added with Fe shows high activity and the current density of 1.5 A/cm2 was achieved at 1.6 V and 1 073 K on Ni-Fe (9:1) cathode. Improved electrolysis activity was explained by the expanded reaction site which may be assigned the fine particle of Ni. Furthermore, effects of additives to Ni cathode were studied and it was found that the electrolysis current could be much improved by addition of Fe to Ni. Effects of oxide ion conductor mixing with Ni-Fe were further studied and it was found that mixing La0.6Sr0.4Fe0.9Mn0.1O3 with Ni-Fe bimetal is the most effective for achieving high electrolysis current of CO2 of 2.07 A/cm2 at 1.6 V and 1 073 K.

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JO - Transactions of the Iron and Steel Institute of Japan

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IS - 2

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Intermediate temperature CO₂ electrolysis by using La_0.9Sr_0.1Ga_0.8Mg_0.2O₃ oxide ion conductor

Abstract

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