Doping Strategy To Boost the Electromagnetic Wave Attenuation Ability of Hollow Carbon Spheres at Elevated Temperatures

Affiliation of Author(s):材料科学与技术学院

Journal:ACS SUSTAINABLE CHEMISTRY & ENGINEERING

Key Words:Flexible EM wave absorber Elevated temperature Sulfur-doped hollow carbon sphere Polarization loss Lightweight

Abstract:Currently, the electromagnetic (EM) wave absorbers usually suffer severe performance degradation when they work for a while due to the generated heat issue. Developing a high-performance EM absorber with flexibility and adjustability that can effectively absorb the EM energy and convert into thermal energy at elevated temperature is highly desired but still remains a significant challenge. Herein, we demonstrate S-doped hollow carbon nanospheres used as fillers to fabricate a flexible and controllable EM absorber toward this challenge. Owing to the insertion of S-based polar groups in the graphitization area of carbon spheres, this EM absorber exhibits outstanding electromagnetic wave absorption capability with elimination of X-band EM wave performance at a temperature range of 298-423 K. Almost 90% of the X-band EM wave can be dissipated at 373 K, while the effective absorption rate of 75% can still be achieved at 423 K.

ISSN No.:2168-0485

Translation or Not:no

Date of Publication:2018-02-01

Co-author:Lv, Hualiang,Guo, Yuhan,Guo, Tengchao,Wu, Hongjing,Liu, Gu,Wang, Liuying,Wu, Renbing

Correspondence Author:杨志鸿,Wu, Renbing,yangzhihong

Date of Publication:2018-02-01