Electromagnetic radiation pollution has become more serious in our daily life. The portable, flexible materials with an ultrahigh electromagnetic interference shielding effectiveness (EMI SE) are highly desirable to meet the needs of different applications. In this study, such a material was prepared by combining cellulose paper substrate with an effective electroless plating, which involved successive steps of 3-aminopropyltriethoxysilane (APTES) modification, PdCl₂ activation and nickel coating deposition. The interaction mechanism among cellulose paper, APTES and PdCl₂ was researched by FTIR and XPS measurements. According to SEM and XRD analyses, the nickel particles, with an average grain size of 14.742 nm, were densely deposited on the surface of cellulose paper, which formed excellent conductive paths. The electrical conductivity and EMI SE increased with an increase in plating time. When the plating time was 60 min, the sheet resistance was 97.1 mΩ/sq, and the EMI SE reached 44.1 dB in a frequency range of 8.2–12.4 GHz. The deposited Ni coating improved the self-cleaning and corrosion resistance properties of the cellulose paper. This work provides a sustainable, multifunctional, flexible cellulose paper-based shielding material that can achieve large-scale production.

电磁辐射污染在我们的日常生活中变得越来越严重。具有超高电磁干扰屏蔽效率 (EMI SE) 的便携式柔性材料非常适合满足不同应用的需求。在这项研究中，这种材料是通过将纤维素纸基材与有效的化学镀相结合来制备的，其中包括 3-氨基丙基三乙氧基硅烷 (APTES) 改性、PdCl ₂活化和镍涂层沉积的连续步骤。纤维素纸、APTES和PdCl ₂的相互作用机制通过 FTIR 和 XPS 测量进行研究。根据 SEM 和 XRD 分析，平均粒径为 14.742 nm 的镍颗粒密集沉积在纤维素纸表面，形成了良好的导电路径。电导率和 EMI SE 随着电镀时间的增加而增加。当电镀时间为 60 分钟时，薄层电阻为 97.1 mΩ/sq，EMI SE 在 8.2–12.4 GHz 频率范围内达到 44.1 dB。沉积的镍涂层提高了纤维素纸的自清洁和耐腐蚀性能。这项工作提供了一种可持续的、多功能的、柔性的纤维素纸基屏蔽材料，可以实现大规模生产。