材料科学
磁滞
线性
超短脉冲
摩擦电效应
乙二醇
拉伤
纳米发生器
纳米技术
光电子学
自愈水凝胶
化学工程
复合材料
电气工程
高分子化学
光学
物理
压电
内科学
工程类
医学
量子力学
激光器
作者
Jian Zou,Xin Jing,Zhuo Chen,Sheng‐Ji Wang,Xiang‐Shu Hu,Peiyong Feng,Yuejun Liu
标识
DOI:10.1002/adfm.202213895
摘要
Abstract The conductive hydrogels always suffered from high internal friction, large hysteresis, and low capability of accurately predicting physical deformation, which seriously restricted their application in smart wearable devices. To address these problems, solvent molecules are directionally inserted into the polymer molecule chains via bridge effect to effectively reduce the molecular internal friction. Moreover, swelling is also combined to eliminate the temporary entanglements in the hydrogel system. The cooperation between the bridge and swollen effect endows the prepared polyacrylamide (PAM)/laponite/H 3 BO 3 /ethylene glycol (Eg) organohydrogel (PLBOH) ultralow hysteresis (1.38%, ε = 100%), ultrafast response (≈10 ms), and high linearity in the whole‐strain‐range ( R 2 = 0.996) with a great sensitivity ( GF = 2.68 at the strain range of 0–750%). Meanwhile, the prepared PL 10 B 30 OH exhibits long‐term stability, excellent stretchability, and low dissipated energy. Furthermore, the assembled triboelectric nanogenerator (TENG) displays an outstanding energy harvesting performance with an output voltage of 200 V with the size of 20 mm × 20 mm. The assembled strain sensors can monitor the small strain of facial expressions and large strain of human movements, indicating the tremendous applications in self‐powered intelligent and flexible wearable electronics under harsh environmental conditions.
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