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Recenzirano
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Zheng, Shuanghao; Wang, Hui; Das, Pratteek; Zhang, Ying; Cao, Yuexian; Ma, Jiaxin; Liu, Shengzhong (Frank); Wu, Zhong‐Shuai
Advanced materials (Weinheim), 03/2021, Letnik: 33, Številka: 10Journal Article
The future of mankind holds great promise for things like the Internet of Things, personal health monitoring systems, and smart cities. To achieve this ambitious goal, it is imperative for electronics to be wearable, environmentally sustainable, and safe. However, large‐scale manufacture of self‐sufficient electronic systems by exploiting multifunctional materials still faces significant hurdles. Herein, multitasking aqueous printable MXene inks are reported as an additive‐free high‐capacitance electrode, sensitive pressure‐sensing material, highly conducting current collector, metal‐free interconnector, and conductive binder. By directly screen printing MXene inks, MXene‐based micro‐supercapacitors (MSCs) and lithium‐ion microbatteries (LIMBs) are delicately fabricated on various substrates. The as‐prepared MSCs exhibit ultrahigh areal capacitance of 1.1 F cm−2 and the serially connected MSCs offer a record voltage of 60 V. The quasi‐solid‐state LIMBs deliver a robust areal energy density of 154 μWh cm−2. Furthermore, an all‐flexible self‐powered integrated system on a single substrate based on the multitasking MXene inks is demonstrated through seamless integration of a tandem solar cell, the LIMB, and an MXene hydrogel pressure sensor. Notably, this integrated system is exceptionally sensitive to body movements with a fast response time of 35 ms. Therefore, this multipurpose MXene ink opens a new avenue for powering future smart appliances. An all‐flexible MXene‐based self‐powered electronic system is demonstrated on a single substrate through seamless integration of a tandem solar cell, MXene‐based lithium‐ion microbatteries or micro‐supercapacitors, and an MXene hydrogel pressure sensor, where the multitasking MXene is fully exploited as a high‐capacitance electrode, a sensitive pressure‐sensing material, a highly conducting current collector, a metal‐free interconnector, and a conductive binder.
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in: SICRIS
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