多重H键交联超分子固体-固体相变材料用于热能储存和管理
Chenyang Wang1, Xin Geng1, Jing Chen1
1School of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
Advanced materials (Deerfield Beach, Fla.)
|December 13, 2023
概括
研究人员开发了新的固体-固体相变材料 (SSPCMs),克服了热能储存和机械强度之间的权衡. 这些超分子SSPCM为先进的热管理应用提供高潜热和强大的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 热力工程是热力工程中的一个.
背景情况:
- 固体-固体相变材料 (SSPCMs) 是热能存储的关键,但面临着高TES容量,机械强度和可回收性方面的挑战.
- 现有的SSPCM通常依赖于化学交叉链接,限制其可重复使用性和性能.
- 储能和机械完整性之间固有的权衡阻碍了实际应用.
研究的目的:
- 开发一种新的超分子SSPCM战略,解决传统材料的局限性.
- 在SSPCMs中实现高潜热,优越的机械强度和增强的可回收性.
- 为了证明这些SSPCM在高功率应用 (如离子电池) 的热管理中的有效性.
主要方法:
- 使用多个结相互作用作为物理交叉链接制造超分子SSPCM.
- 阶段过渡,机械强度和热稳定性的表征.
- 评估SSPCM在调节离子电池在3°C放电速度下运行温度方面的性能.
主要成果:
- 开发的超分子SSPCM表现出高阶段过渡 (142.5 J g-1) 和强大的机械强度 (36.9 MPa).
- 该材料表现出极好的形状稳定性,在120°C下保持完整性,即使具有97%重量的相变组件.
- 在离子电池中的应用导致操作温度显著降低23°C.
结论:
- 已经建立了一个简单的策略来制造具有优良热和机械性能的高性能超分子SSPCM.
- 交叉链接的SSPCM克服了传统的权衡,提供高潜热和强度.
- 这些先进的SSPCM显示出在苛刻的应用中,特别是高功率电池中,有效的热管理的巨大潜力.
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