The miniaturization of electronic devices and systems has led to increasingly sophisticated electronic circuits, resulting in electromagnetic interference (EMI) that can substantially influence performance of electronic devices and wireless communications. To address this issue, researchers have extensively explored various strategies including application of EMI shielding materials. Here, we use Nb₂O₅ nanoparticles incorporated N-doped carbon nanofibers (Nb₂O₅–CNF) for EMI shielding applications in wide frequency range (8.2 GHz–26.5 GHz). Nb₂O₅–CNF was prepared through electrospinning, followed by carbonization. A 50 wt% loading of Nb₂O₅ (Nb₂O₅–CNF-50) exhibited high EMI shielding effectiveness of 67 dB with a thickness of 0.08 mm, where, more than 80% of shielding is through absorption mechanism. Ease of handling of Nb₂O₅–CNF could be improved by making flexible PDMS composites of Nb₂O₅–CNF. The PDMS composites exhibited similar EMI shielding behavior in the frequency range 8.2–26.5 GHz. Nb₂O₅–CNF and their PDMS composites can open up new possibilities towards large scale production of lightweight, flexible, and easy-to-integrate materials to shield workspaces, surroundings, and complex electronic circuits against unwanted EM radiations.

电子设备和系统的小型化导致电子电路日益复杂，从而产生电磁干扰 (EMI)，严重影响电子设备和无线通信的性能。为了解决这个问题，研究人员广泛探索了各种策略，包括应用 EMI 屏蔽材料。在这里，我们使用掺有 N 掺杂碳纳米纤维的Nb ₂ O _{5纳米粒子 (Nb 2} O ₅ –CNF) 用于宽频率范围 (8.2 GHz–26.5 GHz) 的 EMI 屏蔽应用。通过静电纺丝和碳化制备Nb ₂ O _{5 –CNF。Nb 2} O ₅负载量为 50 wt%(Nb ₂ O ₅ –CNF-50)在0.08 mm的厚度下表现出67 dB的高EMI屏蔽效能，其中超过80%的屏蔽是通过吸收机制实现的。_{通过制备 Nb 2} O ₅ –CNF 的柔性 PDMS 复合材料，可以提高 Nb ₂ O ₅ –CNF的易处理性。PDMS 复合材料在 8.2–26.5 GHz 频率范围内表现出类似的 EMI 屏蔽行为。Nb ₂ O ₅ –CNF 及其 PDMS 复合材料可以为大规模生产轻质、灵活且易于集成的材料开辟新的可能性，以保护工作空间、周围环境和复杂的电子电路免受不必要的电磁辐射。