不规则的等级多孔聚合物用于高性能软热电材料
Xiao Zhang1,2, Dongyang Wang1, Liyao Liu1
1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.
Science (New York, N.Y.)
|March 5, 2026
概括
我们开发了新的多孔热电聚合物,可以有效地将热量转化为电力. 这一突破提高了性能,并简化了可持续能源解决方案的制造.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 能源转换 能源转换
背景情况:
- 聚合物热电提供了一种灵活,低成本的可持续能源生产方法.
- 目前的局限性包括低于最佳性能和复杂的可扩展性.
研究的目的:
- 设计先进的热电聚合物,以提高性能和简化处理.
- 解决聚合物热电材料效率不足和制造复杂性的关键挑战.
主要方法:
- 在热电聚合物中引入不规则的层次性多孔结构.
- 调节孔径尺寸分布从纳米到微米.
- 使用喷涂技术进行材料沉积.
主要成果:
- 通过增强的声子散射,实现了网格导热率的72%降低.
- 由于纳米限制诱导的结晶,观察到更好的电荷传输.
- 在343K时达到1.64的创纪录的功绩 (zT) 值.
结论:
- 不规则的层次性是高性能热电聚合物的有希望的策略.
- 开发的方法与可扩展的喷涂技术兼容.
- 这些发现为聚合物热电发电机的实际应用铺平了道路.
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