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  • Title: Wide temperature-tolerant polyaniline/cellulose/polyacrylamide hydrogels for high-performance supercapacitors and motion sensors.
    Author: Li Y, Gong Q, Liu X, Xia Z, Yang Y, Chen C, Qian C.
    Journal: Carbohydr Polym; 2021 Sep 01; 267():118207. PubMed ID: 34119166.
    Abstract:
    Herein, we report a simple approach to fabricate PANI/cellulose/PAAM conductive hydrogels with interpenetrating structure by in-situ polymerization of PANI into the acid tolerant cellulose/PAAM hydrogel. The obtained conductive hydrogels not only can achieve high flexibility and excellent conductivity, but also can be directly sandwiched between carbon clothes to fabricate all-in-one configured supercapacitors. Such supercapacitors show excellent electrochemical performances with a large areal capacitance of 835.0 mF/cm2 (corresponding to 4.175 F/cm3), a high energy density of 74.22 μWh/cm2 and an enhanced cycling performance with 96% capacitance retention after 5000 cycles. What's more, the supercapacitors can withstand large bending/compressing deformations and wide temperature-tolerant from -60 to 80 °C. In addition, the PANI/cellulose/PAAM hydrogels can be fabricated into wearable motion sensors to monitor various human movements, such as finger bending and pressing, subtle clenching fist, swallowing and phonation in real-time. The obtained multifunctional performances may provide intriguing opportunities for practical applications.
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