固体氧化物燃料电池Sr2-xPrxFe1.5Mo0.5O6-δ阴极材料的制备与性能
Preparation and Performance of Sr2-xPrxFe1.5Mo0.5O6-δ Cathode Materials for Solid Oxide Fuel Cell
王盼 1钱伟星 1陈雨婷 1程继海1
作者信息
- 1. 合肥学院能源材料与化工学院,安徽合肥 230601
- 折叠
摘要
采用溶液燃烧法制备了固体氧化物燃料电池阴极材料Sr2-xPrxFe1.5Mo0.5O6-δ(x=0～0.1),对其相结构、电化学性能及其与电解质材料的化学稳定性和热相容性进行了研究.结果表明,Sr2-xPrxFe1.5Mo0.5O6-δ阴极材料具有典型的双钙钛矿结构,与电解质材料Ce0.8Gd0.2O19之间具有较好的化学稳定性;适量掺杂Pr不但可以改善电极与电解质材料的热膨胀匹配性,而且可以提高Sr2-xPrxFe1.5Mo0.5O6-δ的电导率并降低其极化电阻;Sr1.95Pr0.05Fe1.5Mo0.5O6-δ的电导率在450 ℃可达到最大值32.0 S·cm-1,同时具有最低的极化电阻0.266 Ω·cm2.Sr2-xPrxFe1.5Mo0.5O6-δ可以用作一种潜在的固体氧化物燃料电池阴极材料.
Abstract
Cathode material of Sr2-xPrxFe1.5Mo05O6-δ(x=0～0.1)for solid oxide fuel cells(SOFCs)was prepared by solution combustion method.Its phase structure,electrochemical properties,chemical stability and thermal compatibility with electrolyte materials were studied.The results show that Sr2_xPrxFe1.5Mo0.5O6-δ has a typical dou-ble-perovskite structure when Sr element in Sr2Fe1.5Mo0.5O6 is partially replaced by Pr.There is a good chemical stability and a thermal expansion compatibility between Sr2-xPrxFe1.5Mo0.5O6-δ cathode and Ce0.8Gd02O1.9 electrolyte.The conductivity of Sr2-xPrxFe1.5Mo0.5O6-δ can be improved while the polarization resistance is reduced by doping with appropriate amount of Pr.The conductivity of Sr1.95Pr0 05Fe1.5Mo0.5O6-δ can reach the maximum value of 32.0 S·cm-1 at 450 ℃,while having the lowest polarization resistance of 0.266 Ω·cm2.Therefore,Sr2-xPrxFe1.5Mo0.5O6-δ can be used as a potential cathode material for medium temperature solid oxide fuel cells.
关键词
固体氧化物燃料电池/阴极材料/双钙钛矿结构/Sr2-xPrxFe15Mo0.5O6-δ/电性能Key words
solid oxide fuel cells/cathode/double-perovskite structure/Sr2_xPrxFe1.5Mo0.5O6-δ/electrical properties引用本文复制引用
基金项目
安徽省自然科学基金(2108085ME152)
合肥学院人才科研基金(21-22RC34)
出版年
2024
NETL
NSTL
万方数据