Статья

Self-Assembly Construction of WS<sub>2</sub>–rGO Architecture with Green EMI Shielding

Deqing ZhangSchool of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, ChinaTingting LiuSchool of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, ChinaJin‐Cheng ShuSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaShuang LiangSchool of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, ChinaXixi WangSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaJunye ChengGuangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, ChinaHao WangGuangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, ChinaMao‐Sheng CaoSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

2019en

ABI

Аннотация

Accurately tailoring electromagnetic (EM) materials for achieving high-performance EM interference (EMI) shielding is significantly imperative with increasing EM pollution worldwide. Green EMI shielding materials are attracting extensive attention because of the less additional environmental hazard caused by the lower secondary reflection. However, the conflict between high efficiency and eco-friendly nature makes green EMI shielding still challenging. In this work, a new strategy of turning a guest into a host is developed for the first time, and a unique WS2–rGO architecture of mountain-like wall is constructed successfully achieving efficient and green EMI shielding. The shielding efficiency (SE) is over 20 dB in the investigated frequency range (2–18 GHz) and the maximum was 32 dB with an endearing green index (gs ≈ 1.0). The efficient and green EMI SE is ascribed to the multilevel structure and intrinsic dielectric properties of the WS2–rGO architecture, including the synergy of relaxation and conduction, multi-scattering between the interface and void, and the equivalent wedge effect. These results demonstrate that the WS2–rGO architecture is a promising candidate in EM transducers, microwave imaging, EM protection, and energy devices.

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Идентификаторы

DOI: 10.1021/acsami.9b06509

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar