材料科学
出汗
纳米纤维素
摩擦电效应
自愈水凝胶
纳米技术
自愈
纳米复合材料
复合材料
聚苯胺
纤维素
化学工程
聚合
高分子化学
聚合物
工程类
病理
替代医学
医学
作者
Ying Qin,Jilong Mo,Yanhua Liu,Song Zhang,Jinlong Wang,Qiu Fu,Shuangfei Wang,Shuangxi Nie
标识
DOI:10.1002/adfm.202201846
摘要
Abstract Though visualizing perspiration constituents is crucial for physiological evaluation, inadequate material healing and unreliable power supply methods restrict its applications. Herein, a fully flexible self‐powered sweat sensor is fabricated from a cellulose‐based conductive hydrogel to address these issues. The hydrogel electrode is composed of a cellulose nanocomposite polymerized in situ with polyaniline and cross‐linked with polyvinyl alcohol/borax. The cellulose nanocomposites furnish the sweat sensor with tensile and electrical self‐healing efficiencies exceeding 95% within 10 s, a stretchability of 1530%, and conductivity of 0.6 S m −1 . The sweat sensor quantitatively analyzes Na + , K + , and Ca 2+ contents in perspiration, to sensitivities of 0.039, 0.082, and 0.069 mmol –1 , respectively, in real time via triboelectric effect and wirelessly transmits the results to a user interface. This fabricated sweat sensor with high flexibility, stability, and analytical sensitivity and selectivity provides new opportunities for self‐powered health monitoring.
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