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Layer‐by‐Layer Assembly of Cross‐Functional Semi‐transparent MXene‐Carbon Nanotubes Composite Films for Next‐Generation Electromagnetic Interference Shielding
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-09-18 , DOI: 10.1002/adfm.201803360 Guo-Ming Weng 1, 2 , Jinyang Li 3 , Mohamed Alhabeb 4 , Christopher Karpovich 2 , Hang Wang 1, 2, 5 , Jason Lipton 1, 2 , Kathleen Maleski 4 , Jaemin Kong 1, 2 , Evyatar Shaulsky 2 , Menachem Elimelech 2 , Yury Gogotsi 4 , André D. Taylor 1, 2
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-09-18 , DOI: 10.1002/adfm.201803360 Guo-Ming Weng 1, 2 , Jinyang Li 3 , Mohamed Alhabeb 4 , Christopher Karpovich 2 , Hang Wang 1, 2, 5 , Jason Lipton 1, 2 , Kathleen Maleski 4 , Jaemin Kong 1, 2 , Evyatar Shaulsky 2 , Menachem Elimelech 2 , Yury Gogotsi 4 , André D. Taylor 1, 2
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Lightweight, flexible, and electrically conductive thin films with high electromagnetic interference (EMI) shielding effectiveness are highly desirable for next‐generation portable and wearable electronic devices. Here, spin spray layer‐by‐layer (SSLbL) to rapidly assemble Ti3C2Tx MXene‐carbon nanotube (CNT) composite films is shown and their potential for EMI shielding is demonstrated. The SSLbL technique allows strategic combinations of nanostructured materials and polymers providing a rich platform for developing hierarchical architectures with desirable cross‐functionalities including controllable transparency, thickness, and conductivity, as well as high stability and flexibility. These semi‐transparent LbL MXene‐CNT composite films show high conductivities up to 130 S cm−1 and high specific shielding effectiveness up to 58 187 dB cm2 g−1, which is attributed to both the excellent electrical conductivity of the conductive fillers (i.e., MXene and CNT) and the enhanced absorption with the LbL architecture of the films. Remarkably, these values are among the highest reported values for flexible and semi‐transparent composite thin films. This work could offer new solutions for next‐generation EMI shielding challenges.
中文翻译：
跨功能半透明MXene-碳纳米管复合膜的多层组装，用于下一代电磁干扰屏蔽
下一代便携式和可穿戴电子设备非常需要具有高电磁干扰（EMI）屏蔽效果的轻质，柔性和导电薄膜。在这里，逐层旋转喷涂（SSLbL）以快速组装Ti 3 C 2 T x显示了MXene-碳纳米管（CNT）复合膜，并展示了其用于EMI屏蔽的潜力。SSLbL技术允许纳米结构材料和聚合物的战略组合，为开发具有理想交叉功能（包括可控的透明度，厚度和电导率以及高稳定性和灵活性）的分层体系结构提供了一个丰富的平台。这些半透明的LbL MXene-CNT复合膜显示高达130 S cm -1的高电导率和高达58 187 dB cm 2 g -1的高比屏蔽效率这归因于导电填料（即MXene和CNT）的出色电导率以及薄膜的LbL结构增强的吸收。值得注意的是，这些值是柔性和半透明复合薄膜的最高报告值。这项工作可以为下一代EMI屏蔽挑战提供新的解决方案。
更新日期：2018-09-18
中文翻译：
跨功能半透明MXene-碳纳米管复合膜的多层组装，用于下一代电磁干扰屏蔽
下一代便携式和可穿戴电子设备非常需要具有高电磁干扰（EMI）屏蔽效果的轻质，柔性和导电薄膜。在这里，逐层旋转喷涂（SSLbL）以快速组装Ti 3 C 2 T x显示了MXene-碳纳米管（CNT）复合膜，并展示了其用于EMI屏蔽的潜力。SSLbL技术允许纳米结构材料和聚合物的战略组合，为开发具有理想交叉功能（包括可控的透明度，厚度和电导率以及高稳定性和灵活性）的分层体系结构提供了一个丰富的平台。这些半透明的LbL MXene-CNT复合膜显示高达130 S cm -1的高电导率和高达58 187 dB cm 2 g -1的高比屏蔽效率这归因于导电填料（即MXene和CNT）的出色电导率以及薄膜的LbL结构增强的吸收。值得注意的是，这些值是柔性和半透明复合薄膜的最高报告值。这项工作可以为下一代EMI屏蔽挑战提供新的解决方案。
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