High-Temperature Transport Properties of BaSn1−xScxO3−δ Ceramic Materials as Promising Electrolytes for Protonic Ceramic Fuel Cells | Sciact - CRIS-system of Boreskov Institute of Catalysis

High-Temperature Transport Properties of BaSn1−xScxO3−δ Ceramic Materials as Promising Electrolytes for Protonic Ceramic Fuel Cells Full article

Journal

Journal of Advanced Ceramics
ISSN: 2226-4108 , E-ISSN: 2227-8508

Output data

Year: 2022, Volume: 11, Number: 7, Pages: 1131-1143 Pages count : 13 DOI: 10.1007/s40145-022-0599-x

Tags

BaSnO3; protonic ceramic fuel cells (PCFCs); proton transport; perovskite; hydration; electronic conductivity

Authors

Zvonareva Inna A. ^1,2 , Mineev Alexey M. ³ , Tarasova Natalia A. ^1,2 , Fu Xian-Zhu ⁴ , Medvedev Dmitry A. ^1,2

Affiliations

1	Institute of High Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Yekaterinburg, 620066, Russia
2	Ural Federal University, Yekaterinburg, 620002, Russia
3	Boreskov Institute of Catalysis, Novosibirsk, 630090, Russia
4	College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China

Protonic ceramic fuel cells (PCFCs) offer a convenient means for electrochemical conversion of chemical energy into electricity at intermediate temperatures with very high efficiency. Although BaCeO3- and BaZrO3-based complex oxides have been positioned as the most promising PCFC electrolytes, the design of new protonic conductors with improved properties is of paramount importance. Within the present work, we studied transport properties of scandium-doped barium stannate (Sc-doped BaSnO3). Our analysis included the fabrication of porous and dense BaSn1−xScxO3−δ ceramic materials (0 ⩽ x ⩽ 0.37), as well as a comprehensive analysis of their total, ionic, and electronic conductivities across all the experimental conditions realized under the PCFC operation: both air and hydrogen atmospheres with various water vapor partial pressures (p(H2O)), and a temperature range of 500–900 °C. This work reports on electrolyte domain boundaries of the undoped and doped BaSnO3 for the first time, revealing that pure BaSnO3 exhibits mixed ionic-electronic conduction behavior under both oxidizing and reducing conditions, while the Sc-doping results in the gradual improvement of ionic (including protonic) conductivity, extending the electrolyte domain boundaries towards reduced atmospheres. This latter property makes the heavily-doped BaSnO3 representatives attractive for PCFC applications.

Zvonareva I.A. , Mineev A.M. , Tarasova N.A. , Fu X-Z. , Medvedev D.A.
High-Temperature Transport Properties of BaSn1−xScxO3−δ Ceramic Materials as Promising Electrolytes for Protonic Ceramic Fuel Cells
Journal of Advanced Ceramics. 2022. V.11. N7. P.1131-1143. DOI: 10.1007/s40145-022-0599-x WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Mar 13, 2022
Accepted:	Apr 13, 2022
Published print:	Jul 2, 2022
Published online:	Jul 2, 2022

Web of science:	WOS:000820245000007
Scopus:	2-s2.0-85133333305
Elibrary:	49152368
Chemical Abstracts:	2022:1706635
Chemical Abstracts (print):	180:197086
OpenAlex:	W4283782163

DB	Citing
Scopus	37
Elibrary	37
Web of science	34
OpenAlex	39