在平面固体氧化物燃料电池中的烧结和结晶过程中ZrO2修饰的酸盐基玻璃密封剂的动态演变
Shuai Yuan1, Haozhen Li1, Hao Shi1
1Key Laboratory for Power Machinery and Engineering of M.O.E., School of Mechanical Engineering, Shanghai Jiao Tong University Shanghai 200240 China tonyzhulei@sjtu.edu.cn.
RSC advances
|February 6, 2026
概括
二氧化 (ZrO2) 纳米粒子在固氧化物燃料电池 (SOFC) 的酸玻璃复合密封剂中增强烧结和结晶. 最佳颗粒大小 (200纳米) 改善了密集和微观结构,这对于高温密封应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 能源科学 能源科学
背景情况:
- 可靠的高温密封对于平面固体氧化物燃料电池 (SOFC) 是必不可少的.
- 玻璃复合材料密封剂是实现这种密封的关键组成部分.
- 了解高温下的材料行为是SOFC性能的关键.
研究的目的:
- 研究二氧化 (ZrO2) 对基于酸盐的玻璃复合密封剂的烧结和结晶动力学的影响.
- 为了确定ZrO2颗粒大小和度对密封剂性能的影响.
- 为设计改进的SOFC密封剂提供见解.
主要方法:
- 扩展测量分析以研究烧结行为.
- 不同扫描热量计 (DSC) 和Vogel-Fulcher-Tammann模拟粘度与温度的关系.
- 扫描电子显微镜 (SEM) 用于微观结构分析.
- 对于相位组成和结晶动力学的X射线衍射 (XRD).
主要成果:
- ZrO2促进了较早的密集,并延长了烧结阶段,200纳米粒子显示了最显著的效果.
- 200纳米的ZrO2形成了一个刚性框架,增强了局部烧结和孔密闭.
- ZrO2 作为二氧化物形成的核化中心,影响结晶运动.
- 纳米粒子聚合,特别是高度的50纳米ZrO2,可以对粘度和烧结产生负面影响.
结论:
- 在酸玻璃复合密封剂中,ZrO2颗粒大小极大地影响了烧结和结晶动力学.
- 优化ZrO2添加 (例如200纳米颗粒) 可以改善SOFC应用的密封剂微观结构和性能.
- 了解ZrO2在核和烧结中的作用为量身定制的密封剂设计提供了一条道路.
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