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

第一作者：Ji, Qingsong

通信作者：Wang, CP[1];Nan, JY[1];Wang, CP[2];Nan, JY[2];Wang, CP[3];Nan, JY[3]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Key Lab Dev & Utilizat Forest Food Resources, Nanjing 210042, Jiangsu, Peoples R China;[2]Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Jiangsu, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Resources, Nanjing 210037, Jiangsu, Peoples R China

年份：2025

外文期刊名：SMALL

收录：;EI(收录号：20252418597746);Scopus(收录号：2-s2.0-105007791024);WOS:【SCI-EXPANDED(收录号:WOS:001503807600001)】；

基金：Q.J. and Y.L. contributed equally to this work. This work was supported by the Fundamental Research Funds of Jiangsu Key Laboratory of Biomass Energy and Material (JSBEM-S-202210), the National Natural Science Foundation of China (32301526), and the Natural Science Foundation of Jiangsu Province (BK20220213).

语种：英文

外文关键词：flexible sensor; hydrogel; MXene nanosheets; strain sensitivity; visual display

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 properties 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 of hydrogel matrices, thus compromising the mechanical flexibility and strain sensitivity of hydrogel sensors. Here a class of MXene hydrogel sensors is proposed 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 dopamine-grafted carboxymethyl cellulose sodium (DA@CMC) endow the hydrogel sensor with excellent anti-oxidation, adhesion, and long-term conductivity, enabling this sensor to show desirable strain sensitivity with a fast response time of 102 ms and a wide sensing scope of 0-800% strain. Moreover, the integration of a strain-sensitive hydrogel sensor with a multicolor display demonstrates system-level applications for real-time visual motion monitoring. This work paves the way for the development of body-conformable monitoring devices, holding great potential in wearable electronics that require visual functionalities.