反射损耗
材料科学
微波食品加热
微球
石墨烯
复合数
复合材料
作文(语言)
碳化
电导率
氧化物
化学工程
吸收(声学)
纳米技术
光电子学
计算机科学
工程类
哲学
电信
语言学
作者
Zihao Liu,Yihao Fan,Zhigang Liu,Qiuyu Zhang,Baoliang Zhang
标识
DOI:10.1016/j.compositesa.2022.107119
摘要
• A novel 3D wrinkled microsphere absorber of MoS 2 /RGO/NC is developed. • The minimum reflection loss (RL min ) exceeds −60.4 dB. • The effective absorption bandwidth (EAB) covers 6.1 GHz. • The advantages of the exhibit excellent properties are further elucidated. MoS 2 and graphene oxide (GO) are assembled into three-dimensional MoS 2 /GO wrinkled microspheres by one-step ultrasonic spray technique. MoS 2 /RGO/NC wrinkled microspheres are obtained after carbonization of MoS 2 /GO coated with polydopamine (PDA) shell. The microspheres exhibited excellent microwave absorbing properties benefiting from its complex structure, complementary loss mechanisms and great impedance matching. The minimum reflection loss (RL min ) of MoS 2 /RGO/NC wrinkled microspheres can obtain −60.4 dB@8.4 GHz, and the corresponding thickness is 3.1 mm. The optimal MoS 2 to GO feed ratio is 1:2. Adjusting the composition of the microspheres, the material effective absorption bandwidth (EAB) is up to 6.1 GHz (11.9–18.0 GHz) at a thickness of 2.9 mm. The optimized assembly of the three materials led to the further enhancement of the microsphere performance owe to the special morphology design as well as the splendid electrical conductivity. This work offers an efficacious reference idea for the device of novel and significant wave absorbers.
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