成果归属机构：

数理学院

作者：

Chen, Xiaowen ; Li, Wanwan ; Zhang, Heng ; Chen, Ning ; Zhang, Bin ; Wu, Xiaohu

单位：

Qingdao Univ Sci & Technol, Coll Electromech Engn, Qingdao 266061, Peoples R China;Henan Univ Technol, Sch Civil Engn, Zhengzhou 450000, Henan, Peoples R China;China Univ Geosci Beijing, Sch Sci, Beijing 100083, Peoples R China;Shandong First Med Univ & Shandong Acad Med Sci, Med Sci & Technol Innovat Ctr, Jinan 250117, Peoples R China;Shandong Inst Adv Technol, Thermal Sci Res Ctr, Jinan 250100, Peoples R China

关键词：

ENERGY-STORAGE; RENEWABLE ENERGY

摘要：

The utilization of solar energy has problems such as intermittency and instability. Energy storage technology using phase change materials (PCMs) can effectively achieve conversion and storage of thermal energy. However, traditional PCMs has problems such as complex manufacturing, low light absorption performance and easy leakage in the field of photothermal conversion. In this paper, a photothermal phase change material (PPCM) that achieves broad-spectrum absorption and efficient photothermal conversion is proposed, and it exhibits good encapsulation properties at high temperatures. Among them, olefin block copolymer (OBC) effectively encapsulates paraffin (PW) as the supporting matrix of PPCM. By introducing expanded graphite (EG) into the PW@OBC system, (PW@OBC)-EG achieves an average light absorption efficiency of 93.5 % with an excellent latent heat of phase transition of 102.5 J/g (PW@OBC)-EG demonstrates excellent photothermal conversion and energy storage capabilities in the utilization of solar energy, and has high application potential in practical scenarios.

基金：

National Natural Science Foundation of China [52106099]

语种：

英文

DOI：

10.1016/j.solmat.2025.114052

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS,2026():.

出版日期：

2026-03

提交日期：

2025-12-08

引用参考：

Chen, Xiaowen; Li, Wanwan; Zhang, Heng; Chen, Ning; Zhang, Bin; Wu, Xiaohu. OBC-encapsulated and EG-reinforced photothermal phase change materials for broad-spectrum solar thermal conversion and storage[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS,2026():.