<br>基于二十烷的导热相变复合材料可有效捕获太阳能并在实际环境中用作电源,Chemical Engineering Journal

当前位置： X-MOL 学术 › Chem. Eng. J. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

基于二十烷的导热相变复合材料可有效捕获太阳能并在实际环境中用作电源
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2023-03-04 , DOI: 10.1016/j.cej.2023.142273
Linhong Li , Maohua Li , Yue Qin , Yapeng Chen , Wen Dai , Zhenbang Zhang , Xiangdong Kong , Ping Gong , Yandong Wang , Rongjie Yang , Bo Wang , Tao Cai , Zhongbin Pan , Kazuhito Nishimura , Cheng-Te Lin , Nan Jiang , Jinhong Yu

随着化石能源的日益短缺，迫切需要开发一种具有精致导热性和优异热函的相变复合材料，以有效捕获太阳能并与热电发电机（TEG）集成以实现高功率输出密度（>15 W m），从而解决全球能源危机。因此，在设计相变材料（PCM）时有必要对导热性能和潜热提出要求。在这项研究中，首次通过冰模板组装构建了由三维单晶纳米金刚石（3D-SCND）框架实现的热导相变复合材料，其导热率为1.53 W m K，热函为203.5 J g和真空浸渍策略。得益于其精细的结构，它可以实现热通量的快速而均匀的传递，这对于加速太阳能储存并进一步减少光热电转换过程中的能量损失有很大帮助。由于我们的PCM复合材料的高能量密度和快速热能输出能力，不仅光热能转换效率达到90.2%，而且使用TEG装置。我们的策略对于制造高性能相变材料以高效捕获太阳能来解决全球化石能源危机非常有效。

"点击查看英文标题和摘要"

Eicosane-based thermo-conductive phase change composite for efficient capture solar energy and using in real-environment as power source

With the increasing shortage of fossil energy, it is urgent to develop a phase change composite with exquisite thermal conductivity and excellent enthalpy for efficient capture solar energy and integrate with a thermoelectric generator (TEG) to achieve high power output density (>15 W m), so as to solve the global energy crisis. Therefore, it is necessary to put forward requirements for thermal conductive performance and latent heat in designing phase change materials (PCMs). In this study, a thermo-conductive phase change composite with thermal conductivity of 1.53 W m K and enthalpy of 203.5 J g enabled by three-dimensional single crystal nanodiamond (3D-SCND) framework was constructed for the first time via ice-template assembly and vacuum impregnation strategy. Benefited from the elaborate structure, it can realize fast but uniform transfer of heat flux, which is great for accelerating the solar energy storage and further reducing the energy loss during the solar-thermal-electric conversion. Due to derive from high energy density and rapid heat energy output capability of our PCM composite, not only solar-thermal energy conversion efficiency reaches up 90.2%, but also generate an effective real-environment thermoelectric output power density of 22.7 W m using with a TEG device. Our strategy is very effective for fabrication high-performance PCMs for efficient capture solar energy to solve the global fossil energy crisis.

更新日期：2023-03-04

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南