材料科学
自愈水凝胶
摩擦电效应
纳米发生器
MXenes公司
电导率
复合数
耐久性
纳米技术
导电体
纳米结构
复合材料
压电
化学
物理化学
高分子化学
作者
Y.J. Zhang,Jian Zou,Shengji Wang,Xiangshu Hu,Zi-Hao Liu,Pingyun Feng,Xin Jing,Yuejun Liu
标识
DOI:10.1016/j.compositesb.2024.111191
摘要
MXenes are ideal conductive fillers to construct conductive routes for hydrogel-based flexible sensors owing to their great metallic conductivity, hydrophilicity, and high specific surface area. However, their high tendency to aggregate in sol solution severely limited the performance of the resultant hydrogels. Therefore, to enhance the performance of MXene-filled composite hydrogels, we proposed an oxidization method to tailor the nanostructure of MXene to improve the conductivity, transparency, mechanical properties, and sensitivity of the composite hydrogels. Meanwhile, it is noted that the conductivity of the hydrogel significantly affected the output performance of hydrogel-based triboelectric nanogenerator (H-TENG). The polyacrylamide/oxidized MXene (POM) hydrogel-based TENG with the highest output performance was assembled for self-powered sensing and energy harvesting, which demonstrated great reliability and durability with a maximum open circuit voltage of 243 V and a peak power density of 2.38 W/m2. Moreover, the relationship model between the conductivity of the hydrogel and the output performance of the H-TENG was successfully proposed based on the performance of the developed H-TENGs. Therefore, this work shed lights for reasonable design of H-TENGs with high output performance.
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