巴的化学兼容性和电化学性能
Dong Xu1, Xingkai Zhou1, Yu Li1
1College of Materials Science and Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, China.
Materials (Basel, Switzerland)
|June 10, 2023
概括
六角矿氧化物 (BTM) 显示出中温固体氧化物燃料电池 (IT-SOFC) 的潜力. 然而,BTM与常见的电极材料具有很高的反应性,形成电阻相,阻碍性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 固氧化物燃料电池 固氧化物燃料电池
背景情况:
- 六角矿相关氧化物,特别是Ba7Ta3.7Mo1.3O20.15 (BTM),已经成为中温固体氧化物燃料电池 (IT-SOFC) 的潜在电解质材料.
- 开发稳定高效的电解质对于推进IT-SOFC技术至关重要.
研究的目的:
- 研究BTM的烧结特性,热膨胀系数和化学稳定性.
- 评估BTM与IT-SOFC中使用的各种最先进的电极材料的化学兼容性.
主要方法:
- 烧结属性分析. 烧结属性分析.
- 测量热膨胀系数的方法.
- 通过评估BTM与电极材料 (LSM,LSC,LSCF,PBM,SFM,BCFZY,NiO) 之间的反应进行化学兼容性测试.
主要成果:
- BTM表现出特定的烧结特性和热膨胀行为.
- BTM与多个电极材料具有显著的反应性,包括LSM,LSC,LSCF,PBM,SFM,BCFZY和NiO.
- 反应涉及Ni,Co,Fe,Mn,Pr,Sr和La等元素,导致电阻二次相的形成.
结论:
- 与常见的电极材料相比,BTM的高反应性对其在IT-SOFC中的应用构成了重大挑战.
- 电阻相的形成会降低整体电化学性能,这是一个以前没有报道的关键问题.
- 需要进一步研究以减轻这些界面反应或探索稳定的IT-SOFCs的替代电极/电解质组合.
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