In order to fulfill the ever-growing requirements for electromagnetic interference(EMI)shielding materials,achieving a high efficiency with great flexibility is still a big challenge.Herein,high-performance EMI shield...In order to fulfill the ever-growing requirements for electromagnetic interference(EMI)shielding materials,achieving a high efficiency with great flexibility is still a big challenge.Herein,high-performance EMI shielding composite films with excellent mechanical properties were fabricated via a convenient evaporation method using poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)and silver nanowires(Ag NWs)as conductive fillers.By adding 1.38 wt% Ag NWs into the original polyvinyl alcohol/PEDOT:PSS(PVA/PEDOT:PSS)composite,the obtained film with a thickness of about 20μm shows a remarkable EMI shielding performance(~33 dB)and a special EMI shielding efficiency of 16,800 dB cm^(-1) at 10 GHz.Furthermore,PVA/PEDOT:PSS/Ag NWs films present excellent tensile strength(~62.39 MPa)and elongation at break(~29.3%).The good mechanism allows the films to apply in actual harsh environments.Overall,this study will draw attention to the new films for electromagnetic shielding application.展开更多
基金supported by the National Nature Science Foundation of China(51971111)the Postgraduate Research&Practice Innovation of Jiangsu Province(KYCX200190)Jiangsu Provincial Key Laboratory of Bionic Functional Materials。
文摘In order to fulfill the ever-growing requirements for electromagnetic interference(EMI)shielding materials,achieving a high efficiency with great flexibility is still a big challenge.Herein,high-performance EMI shielding composite films with excellent mechanical properties were fabricated via a convenient evaporation method using poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)and silver nanowires(Ag NWs)as conductive fillers.By adding 1.38 wt% Ag NWs into the original polyvinyl alcohol/PEDOT:PSS(PVA/PEDOT:PSS)composite,the obtained film with a thickness of about 20μm shows a remarkable EMI shielding performance(~33 dB)and a special EMI shielding efficiency of 16,800 dB cm^(-1) at 10 GHz.Furthermore,PVA/PEDOT:PSS/Ag NWs films present excellent tensile strength(~62.39 MPa)and elongation at break(~29.3%).The good mechanism allows the films to apply in actual harsh environments.Overall,this study will draw attention to the new films for electromagnetic shielding application.
