双碳网络增强了1-octadecanol相变材料的热储和热传输性能
Xiuli Wang1, Qingmeng Wang1, Xiaomin Cheng1,2
1School of Mechatronics and Intelligent Manufacturing, Huanggang Normal University, Huanggang 438000, China.
Materials (Basel, Switzerland)
|November 25, 2023
概括
研究人员开发了新的复合泡,碳泡@减少氧化石墨烯 (CF@rGO),以增强有机相变材料 (PCM). 这些材料显著提高了用于高效太阳能储能和热管理应用的导热率.
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
- 纳米技术 纳米技术
背景情况:
- 有机相变材料 (PCM) 具有高热储密度,但热导率低,限制了它们的应用.
- 高效的热能利用对于整合可再生能源至关重要.
- 开发先进的热储材料对于克服传统PCM的局限性至关重要.
研究的目的:
- 为了制备和表征新型复合泡,胺泡@减少氧化石墨烯 (MF@rGO) 和碳泡@减少氧化石墨烯 (CF@rGO),用于增强的有机相变材料.
- 调查双碳网络对基于1-octadecanol (OD) 的PCM的热性能和相变行为的影响.
- 评估这些复合PCM在太阳能储热和热控制等应用中的潜力.
主要方法:
- 使用自组装方法制备MF@rGO和CF@rGO复合泡.
- 将这些复合泡纳入1-octadecanol (OD) 中,以创建复合PCM.
- 使用扫描电子显微镜 (SEM),富里埃变换红外光谱 (FTIR),拉曼光谱,差分扫描热量计 (DSC) 和激光闪光分析 (LFA) 的表征.
主要成果:
- CF@rGO/OD复合PCM的融化和固化度分别为208.3 J/g和191.4 J/g.
- CF@rGO/OD的导热率提高到1.54 W/m·K,与纯 OD相比增加了6.42倍.
- 双碳网络结构显著提高了复合PCM的能量储存和释放效率.
结论:
- 开发的CF@rGO复合泡有效地提高了有机相变材料的导热性和传热能力.
- 这些增强的复合PCM显示出出色的热储性能,使它们适合各种热管理应用.
- 有前途的应用包括低温太阳能储热,精密仪器温度控制和智能建筑系统.
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