4.5 Article

Graphene Aerogel-Supported Phase-Change Material for Pyroelectric Energy Harvesting: Structural Modification and Form Stability Analysis

期刊

ENERGY TECHNOLOGY
卷 11, 期 2, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.202201108

关键词

electrical energy; phase-change materials; thermal energy; volume shrinkages

向作者/读者索取更多资源

3D porous graphene aerogel has the ability to infiltrate a large amount of phase-change materials into its internal pores. By introducing cysteamine to bind the graphene aerogel, the volume shrinkage problem during infiltration can be reduced and the composite exhibits excellent form stability. The composite can generate electrical energy when connected to a pyroelectric electrode. The finite-element method is used to confirm the experimental results by estimating the temperature profile and electrical peaks.
3D porous graphene aerogel (GA) has a capability to infiltrate plenty of phase-change materials (PCM) into the internal pore. Since carbon-based materials can offer excellent solar light absorption and conversion of thermal energy, they are widely used as container-like supporting materials. In general, the GA shows a volume shrinkage problem due to the capillary force during the infiltration process, thus causing a loss in pore volume, that is, PCM weight loss. The PCM amount is proportional to both the absorbed and released thermal energies. Herein, cysteamine is introduced to bind GA. The PCM composite can reduce the volume shrinkage and have an excellent form stability even under the external force. Two kinds of PCMs are connected to a pyroelectric electrode to generate electrical energy. In addition, finite-element method estimates the temperature profile and electrical peaks to confirm experimental results.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据