发射率
黑体辐射
材料科学
镍铬合金
红外线的
热辐射
低发射率
石墨烯
辐射传输
光电子学
辐射
辐射冷却
辐射能
电子设备和系统的热管理
复合材料
光学
纳米技术
热力学
机械工程
物理
工程类
作者
Kun Wang,Songbai Cheng,Jianguo Yang,Yi Cheng,Qing Ci,Hao Yuan,Kewen Huang,Ruojuan Liu,Wenjuan Li,Junliang Li,Ce Tu,Fushun Liang,Yuyao Yang,Jianbo Sun,Qingmei Hu,Jianbo Yin,Baolu Guan,Xiangling Ren,Yue Qi,Zhongfan Liu
标识
DOI:10.1002/adfm.202208785
摘要
Abstract Radiative thermal management has attracted increasing attention for the advantages of energy saving and carbon emission reduction. Infrared radiation coatings are widely adopted to alleviate the low infrared emissivity of commonly used metal alloy electrothermal materials. However, traditional infrared radiation coatings are faced with the issues of the unsteady waveband emissivity, low interfacial adhesion to substrates, and poor long‐term thermal stability. Herein, a bush‐shaped vertical graphene (BVG) grown on nichrome (Ni–Cr) wire is demonstrated, relying on which BVG/Ni–Cr wire presents a high blackbody‐like emissivity of ≈0.96 across a wide wavelength range (2.5–18 µm). When used for radiative heating, BVG/Ni–Cr wire achieves a high thermal radiation efficiency with an order of magnitude improvement compared with bare Ni–Cr wire, as well as the superior deformation and thermal stabilities. These findings reveal the impressive potentials of BVG as an excellent infrared radiation material for the energy‐efficient radiative thermal management.
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