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包凝固路线到Ag2Se:关联结构,相位形成和热电性能

Aikaterini Teknetzi¹, Dimitrios Stathokostopoulos¹, Savvas Hadjipanteli²

¹School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.

Nanomaterials (Basel, Switzerland)

|November 12, 2025

概括

包装凝固为生产高质量的银化物 (Ag2Se) 粉末提供了一种具有成本效益的方法. 这种新的技术产生了一种具有竞争力的热电性能材料,用于接近室温的应用.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
热电学是一种热电学.

背景情况:

银化物 (Ag2Se) 是一个关键的热电材料,用于室温附近的应用.
由于传统合成的局限性和对加工条件的敏感性,Ag2Se的可扩展制造受到阻碍.

研究的目的:

介绍包装凝固作为一种新的,具有成本效益和工业可行的Ag2Se粉末生产方法.
研究合成参数对Ag2Se相,成分和微观结构的影响.
建立结构属性关系,以优化热电性能.

主要方法:

采用包装凝固技术合成β-银化物 (β-Ag2Se) 粉末.
使用各种表征方法分析了相位形成,组成和微观结构.
评估的热电性能,包括功率数字 (ZT),作为温度的函数.

主要成果:

成功合成了具有近静态度组成和均微观结构的纯相正合体β-Ag2Se.
在整合后,相纯度保持不变,没有观察到二次相.
在352K时达到0.63的最大热电功率 (ZT),性能稳定到375K.

结论:

包装水泥是生产高质量的Ag2Se的可行途径,具有具有竞争力的热电效率.
开发的方法表明了大规模生产和未来优化Ag2Se.Se的潜力.
建立了清晰的结构-属性相关性,指导材料设计,用于增强热电应用.

关键词:

塞贝克系数是什么意思化学状态化学状态低温热电器低温热电器微观结构的微观结构包装凝固凝固包装阶段过渡阶段过渡银色化物是银色的化物.导热率导热率导热率导热率导热率导热率

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