Rationally tailoring interface characteristics of ZnO/amorphous carbon/graphene for heat-conduction microwave absorbers
作者机构：State Key Laboratory of Marine Resource Utilization in South China SeaHainan UniversityHaikou 570228China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第10期
页 面：8677-8687页
核心收录：
学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术]
基 金：the National Natural Science Foundation of China(Nos.22068010 and 22168016) the Natural Science Foundation of Hainan Province(No.519QN176) the Finance Science and technology project of Hainan Province(No.ZDYF2020009)
主 题：atomic layer deposition graphene microwave absorption heat conductivity
摘 要：With the increasingly severe electromagnetic interference issue and the huge heat dissipation demand caused by the miniaturized and integrated electronic devices,exploring the heat-conduction microwave absorption(MA)materials is highly desired and remains a great ***,we reported the fabrication of ZnO/amorphous carbon(ZnO/AC)hybrid films covered on the surface of graphene(ZnO/AC/Graphene)to simultaneously apply as the MA and thermal management *** ZnO/AC coatings synthesized with the auxiliary of an atomic layer deposition(ALD)method are highly uniform and controllable,which can significantly improve the MA performance and thermal conduction properties of *** reflection loss(RL)of−55.4 dB and the effective absorption bandwidth of 5.3 GHz were achieved with thickness of 2.0 mm for ZnO/AC/Graphene at a low loading content(3 wt.%).The minimum RL of−57.9 dB can be obtained in the ZnO/AC/Graphene composites at a low frequency(7.8 GHz).Moreover,the absorption frequency can be regulated by changing the ZnO/AC which can be readily implemented by adjusting the ALD cycles of *** thermal conductivity of ZnO/AC/Graphene is up to 257.8 mW·m^(−1)·K^(−1),increased by 53.2%compared with natural *** enhancement mechanisms of microwave loss and heat conduction are systematically studied in *** work not only develops an excellent candidate,but also provides a novel strategy to design functional materials for heat-conduction MA application.
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