High temperature CO2 electrolysis on La(Sr)Fe(Mn)O3 oxide cathode by using LaGaO3 based electrolyte

T. Ishihara, K. T. Wu, S. Wang

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

3 引用 (Scopus)

抜粋

Electrochemical conversion of carbon dioxide to carbon monoxide (CO2 → CO) is a potential useful step in the desirable transformation of the greenhouse gas to fuels or useful chemicals. In this study, the electrochemical conversion of CO2 to CO on 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. It was found that a LaFeO3-d-based perovskite material as cathode (La0.6Sr0.4Fe0.8Mn0.2O3-δ, LSFM6482) shows much higher activity for CO2 electrolysis among the examined oxide and a current density of CO2 electrolysis is achieved with a value of 0.52 A/cm2 at 1.6 V and 1173 K. Doping Sr and Mn to LaFeO3 is highly effective for increasing the cathode activity for CO2 electrolysis under the feed gas condition, which is consisted of 50%CO2, 1%CO, and 49%Ar. Porous structure with fine particle (0.5 μm) and main phase stability of LSFM6482 cathode can be sustained under CO2 electrolysis condition.

元の言語英語
ホスト出版物のタイトルSolid-Gas Electrochemical Interfaces � SGEI 1
編集者M. B. Mogensen, E. Ivers-Tiffee, T. Kawada, S. B. Adler
出版者Electrochemical Society Inc.
ページ197-205
ページ数9
エディション2
ISBN(電子版)9781607685395
DOI
出版物ステータス出版済み - 1 1 2015
イベント1st Symposium on Solid-Gas Electrochemical Interfaces, SGEI 2015 - 227th ECS Meeting - Chicago, 米国
継続期間: 5 24 20155 28 2015

出版物シリーズ

名前ECS Transactions
番号2
66
ISSN(印刷物)1938-6737
ISSN(電子版)1938-5862

その他

その他1st Symposium on Solid-Gas Electrochemical Interfaces, SGEI 2015 - 227th ECS Meeting
米国
Chicago
期間5/24/155/28/15

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Ishihara, T., Wu, K. T., & Wang, S. (2015). High temperature CO2 electrolysis on La(Sr)Fe(Mn)O3 oxide cathode by using LaGaO3 based electrolyte. : M. B. Mogensen, E. Ivers-Tiffee, T. Kawada, & S. B. Adler (版), Solid-Gas Electrochemical Interfaces � SGEI 1 (2 版, pp. 197-205). (ECS Transactions; 巻数 66, 番号 2). Electrochemical Society Inc.. https://doi.org/10.1149/06602.0197ecst