Highly flexible electromagnetic interference shielding films based on ultrathin Ni/Ag composites on paper substrates

Xiangli Liu; Ziheng Ye; Ling Zhang; Pengdong Feng; Jian Shao; Mao Zhong; Zheng Chen; Lijie Ci; Peng He; Hongjun Ji; Jun Wei; Mingyu Li; Weiwei Zhao

doi:10.1007/s10853-020-05518-1

arXiv · 2005.04875

Highly flexible electromagnetic interference shielding films based on ultrathin Ni/Ag composites on paper substrates

Xiangli Liu·Ziheng Ye·Ling Zhang·Pengdong Feng·Jian Shao·Mao Zhong·Zheng Chen·Lijie Ci·Peng He·Hongjun Ji·Jun Wei·Mingyu Li·Weiwei Zhao

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Abstract

Highly flexible electromagnetic interference (EMI) shielding material with excellent shielding performance is of great significance to practical applications in next-generation flexible devices. However, most EMI materials suffer from insufficient flexibility and complicated preparation methods. In this study, we propose a new scheme to fabricate a magnetic Ni particle/Ag matrix composite ultrathin film on a paper surface. For a ~2 micro meter thick film on paper, the EMI shielding effectiveness (SE) was found to be 46.2 dB at 8.1 GHz after bending 200,000 times over a radius of ~2 mm. The sheet resistance (Rsq) remained lower than 2.30 Ohm after bending 200,000 times. Contrary to the change in Rsq, the EMI SE of the film generally increased as the weight ratio of Ag to Ni increased, in accordance with the principle that EMI SE is positively related with an increase in electrical conductivity. Desirable EMI shielding ability, ultrahigh flexibility, and simple processing provide this material with excellent application prospects.

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BibTeX RIS

Xiangli Liu, Ziheng Ye, Ling Zhang, Pengdong Feng, Jian Shao, Mao Zhong, Zheng Chen, Lijie Ci, Peng He, Hongjun Ji, Jun Wei, Mingyu Li, Weiwei Zhao. 2020-05-11. Highly flexible electromagnetic interference shielding films based on ultrathin Ni/Ag composites on paper substrates. https://doi.org/10.1007/s10853-020-05518-1

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