文献类型：期刊文献

英文题名：A Highly Tough and Strain-Sensitive Mxene Hydrogel Sensor Enabling Integrated Wearable Electronics with Body Conformability and Real-Time Visualization

作者：Ji, Qingsong[1,2] Li, Yuxi[1,2] Wang, Zihao[1] Tan, Xushen[1] Sun, Lu[1] Li, Shuang[1,3] Wang, Chuchu[1] Chen, Riqing[1] Chu, Fuxiang[1,2] Nan, Jingya[1,2] Wang, Chunpeng[1,2]

第一作者：Ji, Qingsong

机构：[1] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Laboratory of Biomass Energy and Material, Jiangsu Province, Jiangsu, Nanjing, 210042, China; [2] Co?Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Jiangsu, Nanjing, 210037, China; [3] Northeast Forestry University, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240491943)

语种：英文

外文关键词：Elastomers - Electrotherapeutics - Flexible displays - Ionomers - Nanogels - Nanosheets - Wearable computers - Wearable sensors

摘要：Hydrogel sensors are emerging as one promising device for wearable electronics by virtue of intrinsic flexibility and stimuli sensitivity. In particular, MXene hydrogel sensors possess superior property of high sensitivity and wide strain sensing range, because MXene nanosheets have unique flake structure and metal-like electronic conductivity. However, the existing defects of aggregation and oxidation in MXene nanosheets would easily weaken the toughness and conductivity for hydrogel matrices, thus compromising the mechanical flexibility and strain sensitivity of hydrogel sensors. Here we propose a class of MXene hydrogel sensors by in-situ polymerization and non-covalent interactions. These hydrogel sensors exhibit high stretchability and high toughness simultaneously, reaching stretchability of 1100% and fracture energy of 5374 J m-2. Meanwhile, the introduced catechol groups of DA@CMC endow the hydrogel sensor with excellent anti-oxidation, adhesion and long-term conductivity, enabling this sensor to show desirable strain sensitivity with fast response time of 102 ms and wide sensing scope of 0-800% strain. Moreover, the integration of strain-sensitive hydrogel sensor with multicolor display demonstrates system-level applications for real-time visual motion monitoring. This work paves the way for development of body-conformable monitoring devices, holding great potential in wearable electronics that require visual functionalities. ? 2024, The Authors. All rights reserved.