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Lightweight and flexible PAN@PPy/MXene films with outstanding electromagnetic interference shielding and Joule heating performance
Nanoscale ( IF 5.8 ) Pub Date : 2022-11-14 , DOI: 10.1039/d2nr05318g Fushuo Wu 1 , Zhihua Tian 1 , Peiying Hu 1 , Jingwen Tang 1 , Xueqin Xu 1 , Long Pan 1 , Jian Liu 1, 2 , Peigen Zhang 1 , ZhengMing Sun 1
Nanoscale ( IF 5.8 ) Pub Date : 2022-11-14 , DOI: 10.1039/d2nr05318g Fushuo Wu 1 , Zhihua Tian 1 , Peiying Hu 1 , Jingwen Tang 1 , Xueqin Xu 1 , Long Pan 1 , Jian Liu 1, 2 , Peigen Zhang 1 , ZhengMing Sun 1
Affiliation
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Lightweight and flexible multifunctional materials with excellent electromagnetic interference (EMI) shielding and Joule heating performances are highly demanded for smart and wearable electronics. In this work, polyacrylonitrile (PAN) nanofiber films are prepared by electrospinning and then coated with polypyrrole (PPy) via vapor deposition, yielding a continuous three-dimensional (3D) conductive network of PAN@PPy. Ti3C2Tx MXene nanosheets with high electrical conductivity are sprayed on the PAN@PPy film to enhance its EMI shielding performance. The as-prepared PAN@PPy/MXene films (55 μm thick) exhibit a high EMI shielding effectiveness (SE) of 32 dB, achieving an extraordinarily high normalized surface-specific SE (SSE/t) of up to 17 534.5 dB cm2 g−1 from 8.2 to 12.4 GHz; simultaneously, the temperatures of PAN@PPy/MXene films can be driven up to 170.5 °C at an input voltage of 4 V, and exhibit fast-response, stable, and long-term Joule heating performance. The high SSE/t and efficient Joule heating ability of the films bode potential applications in smart and wearable devices.
中文翻译：
轻质柔韧的 PAN@PPy/MXene 薄膜，具有出色的电磁干扰屏蔽和焦耳热性能
智能和可穿戴电子产品迫切需要具有出色电磁干扰 (EMI) 屏蔽和焦耳热性能的轻质柔性多功能材料。在这项工作中，聚丙烯腈 (PAN) 纳米纤维薄膜通过静电纺丝制备，然后通过气相沉积涂上聚吡咯 (PPy) ，从而产生 PAN@PPy 的连续三维 (3D) 导电网络。Ti 3 C 2 T x将具有高导电性的 MXene 纳米片喷涂在 PAN@PPy 薄膜上，以增强其 EMI 屏蔽性能。所制备的 PAN@PPy/MXene 薄膜（55 μm 厚）表现出 32 dB 的高 EMI 屏蔽效能 (SE)，实现了高达 17 534.5 dB cm 2的极高归一化表面特异性 SE (SSE/t) g -1从 8.2 到 12.4 GHz；同时，PAN@PPy/MXene 薄膜的温度在 4 V 输入电压下可驱动至 170.5 °C，并表现出快速响应、稳定和长期的焦耳加热性能。薄膜的高 SSE/t 和高效的焦耳加热能力预示着在智能和可穿戴设备中的潜在应用。
更新日期：2022-11-14
中文翻译：
轻质柔韧的 PAN@PPy/MXene 薄膜，具有出色的电磁干扰屏蔽和焦耳热性能
智能和可穿戴电子产品迫切需要具有出色电磁干扰 (EMI) 屏蔽和焦耳热性能的轻质柔性多功能材料。在这项工作中，聚丙烯腈 (PAN) 纳米纤维薄膜通过静电纺丝制备，然后通过气相沉积涂上聚吡咯 (PPy) ，从而产生 PAN@PPy 的连续三维 (3D) 导电网络。Ti 3 C 2 T x将具有高导电性的 MXene 纳米片喷涂在 PAN@PPy 薄膜上，以增强其 EMI 屏蔽性能。所制备的 PAN@PPy/MXene 薄膜（55 μm 厚）表现出 32 dB 的高 EMI 屏蔽效能 (SE)，实现了高达 17 534.5 dB cm 2的极高归一化表面特异性 SE (SSE/t) g -1从 8.2 到 12.4 GHz；同时，PAN@PPy/MXene 薄膜的温度在 4 V 输入电压下可驱动至 170.5 °C，并表现出快速响应、稳定和长期的焦耳加热性能。薄膜的高 SSE/t 和高效的焦耳加热能力预示着在智能和可穿戴设备中的潜在应用。
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