光热驱动的可穿戴热电池通过细分聚合物运动驱动,固体-固体相变,具有耐用性和高能量密度
Goutam Nayak1, Karthick Shunmuga Sundaram2, Vinesh Vijayan2
1Department of Chemistry, Indian Institute of Technology, Bombay, India.
Small (Weinheim an der Bergstrasse, Germany)
|December 26, 2025
概括
研究人员开发了一种新的石墨烯氧化物聚合物复合物,用于高效地储存太阳能热能. 这种材料提供了高能量密度和功率密度,使得直接阳光充电和稳定的性能超过300个周期的可穿戴的热舒适性.
科学领域:
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
- 聚合物化学 聚合物化学
背景情况:
- 热电池需要有效的太阳能充电材料和高能量/功率密度.
- 现有的材料经常面临能量密度和功率密度之间的权衡.
- 需要稳定,可重复使用的材料,用于相变热存储.
研究的目的:
- 开发一种混合聚合物复合材料,用于直接太阳能热充电.
- 在热储材料中同时实现高能量和功率密度.
- 为了创建一个可穿戴的热储解决方案,以提供个性化的舒适性.
主要方法:
- 在氧化石墨烯 (GO) 的存在下,聚乙烯糖醇 (PEG) 与聚乙烯协醇框架的单交联.
- 使用温度依赖衍射和NMR光谱学进行表征.
- 制造一个可穿戴贴片,其中包含GO-PTP复合材料.
主要成果:
- 由此产生的石墨烯氧化物合并的聚 (乙烯糖醇) - 多二二酸-多 ( styrene-co-allyl alcohol) (GO-PTP) 复合物显示了可逆相位过渡 (323-333 K) 的 121 J/g 度.
- 加入GO提高了导热率 (2.5倍),并使直接的光热充电成为可能 (97%的效率).
- 实现了高能量密度 (50Wh/kg) 和功率密度 (129W/kg) 的稳定循环 (>300个循环),超过了DoE的目标.
结论:
- GO-PTP复合物克服了高能量和功率密度对热储的相互排他性.
- 该材料展示了直接太阳能充电和稳定,长期性能的潜力.
- 由GO-PTP制成的可穿戴贴片提供快速太阳能充电,提供个性化的热舒适度.
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