用于热能操纵的相位工程复合相变材料.
Waseem Aftab1, Jinming Shi1, Yongkang Jin1
1Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing, 100871, China.
Small (Weinheim an der Bergstrasse, Germany)
|April 15, 2024
概括
研究人员开发了一种新的核心外相变材料 (PCM) 复合材料. 这种新材料克服了低导热性和形状稳定性问题,增强了热能存储 (TES) 以更好地进行热管理.
科学领域:
- 材料科学 材料科学 材料科学
- 热力工程是热力工程中的一个.
- 储能 储能 储能 储能 储能 储能
背景情况:
- 换相材料 (PCM) 通过热能储存 (TES) 和温度稳定提供热管理.
- 现有的PCM面临着低导热率和形状稳定性不佳的挑战,特别是固体液体PCM.
- 固体-固体PCM提供形状稳定性,但与固体-液体PCM相比,其TES容量有所降低.
研究的目的:
- 为高性能PCM开发一个通用的相位工程策略.
- 为了解决PCM中低导热率和形状不稳定的局限性.
- 为了提高热导率和热能存储能力,同时保持形状稳定性.
主要方法:
- 将固体液体PCM与颗粒导电矩阵组合起来.
- 表面反应形成固体-固体PCM外,形成核心-外复合结构.
- 复合材料的导热性,TES容量和形状稳定性的表征.
主要成果:
- 核心外复合PCM证明了增强的导热性和最佳的形状稳定性.
- 与传统的固体-固体PCM相比,TES容量显著增加了高达52%.
- 设计的PCM有效地将电池电池温度降低了15°C,并支持太阳能热电发电.
结论:
- 阶段工程策略成功创建了具有改进热管理能力的高性能PCM.
- 核心外结构有效地封装了PCM核心,并增强了整体TES.
- 这种方法为开发用于各种热能应用的先进PCM提供了有希望的途径.
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