SIC OpenIR
Direct electrolysis of CO2 in solid oxide cells supported on ceramic fuel electrodes with straight open pores and coated catalysts
Sun, L; Zheng, QF; Li, NZ; Chen, CS; Zhan, ZL
2020
Source PublicationSOLID STATE IONICS
ISSN0167-2738
SubtypeArticle; Proceedings Paper
AbstractThis study was to investigate direct electrolysis of CO2 via solid oxide cells with thin Y0.16Zr0.84O1.92 (YSZ) electrolytes and (La0.8Sr0.2)(0.)95MnO3-delta (LSM)-YSZ air electrodes supported on La0.8Sr0.2Cr0.5Fe0.5O3-delta (LSCrF)YSZ fuel electrodes. The fuel electrode with straight open pores was prepared using the phase-inversion tape casting method, modified with nano-scaled Sr(2)FeLsMn(0)(.5)O(6-delta) (SFM) catalysts using the impregnation method. Substantially larger maximum power densities were observed in the fuel cell mode for single cells with the SFM catalysts than without, e.g., 423 vs. 51 mW.cm(-2) at 800 degrees C. Impedance analysis showed an order magnitude drop in the pure ohmic resistances and the interfacial polarization resistances in the presence of electronically conductive and catalytically active SFM nanoparticulates. Electrolysis measurements indicated that these nanoscaled SFM catalysts also helped to promote CO2 reduction reactions. The electrolysis current densities at 1.5 V were 0.48, 0.64 and 1.02 A.cm(-2) for the SFM-infiltrated cells at 700, 750, 800 degrees C, respectively. In contrast, the blank cells displayed much smaller current densities of 0.22, 0.35 and 0.41 A.cm(-2) under the similar conditions. Apparently, the modification of the LSCrF-YSZ electrode with SFM nanoparticulates provided extended electrochemically active sites with sufficient interconnected paths to transfer electrons and oxygen ions, which led to a significant increase in the electrochemical performance. The reduced polarization resistance and high current density show that the nano-scaled SFM-modified LSCrF-YSZ fuel electrode is highly effective for pure CO2 electrolysis without using the safe gas.
DOI10.1016/j.ssi.2019.115154
WOS KeywordEFFICIENT ELECTROLYSIS ; COMPOSITE CATHODE ; TEMPERATURE CO2 ; PURE CO2 ; PERFORMANCE ; REDUCTION ; STEAM ; ANODE
Language英语
WOS Research AreaChemistry ; Physics
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28399
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Sun, L,Zheng, QF,Li, NZ,et al. Direct electrolysis of CO2 in solid oxide cells supported on ceramic fuel electrodes with straight open pores and coated catalysts[J]. SOLID STATE IONICS,2020.
APA Sun, L,Zheng, QF,Li, NZ,Chen, CS,&Zhan, ZL.(2020).Direct electrolysis of CO2 in solid oxide cells supported on ceramic fuel electrodes with straight open pores and coated catalysts.SOLID STATE IONICS.
MLA Sun, L,et al."Direct electrolysis of CO2 in solid oxide cells supported on ceramic fuel electrodes with straight open pores and coated catalysts".SOLID STATE IONICS (2020).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun, L]'s Articles
[Zheng, QF]'s Articles
[Li, NZ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun, L]'s Articles
[Zheng, QF]'s Articles
[Li, NZ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun, L]'s Articles
[Zheng, QF]'s Articles
[Li, NZ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.