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Investigation of alkaline metal ion-doped strontium vanadate oxide Anode for solid oxide fuel cells.

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Bibliographic Details
Title: Investigation of alkaline metal ion-doped strontium vanadate oxide Anode for solid oxide fuel cells.
Authors: Tsai, Shu-Yi1 (AUTHOR) willxkimo@yahoo.com.tw, Liu, Chi-Yang2 (AUTHOR), Fung, Kuan-Zong1,3 (AUTHOR)
Source: Ceramics International. Jul2025:Part B, Vol. 51 Issue 16, p22741-22746. 6p.
Subject Terms: *ELECTROCHEMICAL apparatus, *FOSSIL fuels, *ELECTRIC batteries, *ELECTRIC conductivity, *STRONTIUM oxide
Abstract: The prevention of carbon deposition on anode materials is a critical factor in enhancing the efficiency of Solid Oxide Fuel Cells (SOFCs) when utilizing hydrocarbon fuels. It has shown that SrVO 3 -based ceramics exhibit significant resistance to carbon deposition and poisoning. However, the perovskite structure of SrVO 3 is unstable in air. Therefore, the primary aim of this study was to investigate the integration of Na + cations into the SrVO 3 lattice structure to enhance its stability while preserving its desirable properties. The incorporation of sodium ions at concentrations between 5 and 10 % into SrVO 3 can lead to a combination of different valences within the material, promoting electron hopping and subsequently increasing conductivity. Concurrently, it has been observed that the tolerance factor decreases with an increase in sodium content. In this study, the electrical conductivity of Na 0.1 Sr 0.9 VO 3 was measured to be 700 Scm−1 in a reducing atmosphere. An increase of more than 15 % in monovalent ions resulted in the formation of secondary phases, specifically Na 0.6 V 12 O 29. These findings provide valuable insights into the factors influencing the electrical properties of Na 1-x Sr x VO 3 , thereby creating opportunities for its potential utilization in solid oxide fuel cells and various electrochemical devices. [ABSTRACT FROM AUTHOR]
Database: Academic Search Index
Description
Abstract:The prevention of carbon deposition on anode materials is a critical factor in enhancing the efficiency of Solid Oxide Fuel Cells (SOFCs) when utilizing hydrocarbon fuels. It has shown that SrVO 3 -based ceramics exhibit significant resistance to carbon deposition and poisoning. However, the perovskite structure of SrVO 3 is unstable in air. Therefore, the primary aim of this study was to investigate the integration of Na + cations into the SrVO 3 lattice structure to enhance its stability while preserving its desirable properties. The incorporation of sodium ions at concentrations between 5 and 10 % into SrVO 3 can lead to a combination of different valences within the material, promoting electron hopping and subsequently increasing conductivity. Concurrently, it has been observed that the tolerance factor decreases with an increase in sodium content. In this study, the electrical conductivity of Na 0.1 Sr 0.9 VO 3 was measured to be 700 Scm−1 in a reducing atmosphere. An increase of more than 15 % in monovalent ions resulted in the formation of secondary phases, specifically Na 0.6 V 12 O 29. These findings provide valuable insights into the factors influencing the electrical properties of Na 1-x Sr x VO 3 , thereby creating opportunities for its potential utilization in solid oxide fuel cells and various electrochemical devices. [ABSTRACT FROM AUTHOR]
ISSN:02728842
DOI:10.1016/j.ceramint.2025.01.142