摩擦电效应
材料科学
聚二甲基硅氧烷
纳米发生器
石墨烯
纳米技术
微型多孔材料
能量收集
纳米复合材料
氧化物
光电子学
复合材料
能量(信号处理)
压电
统计
冶金
数学
作者
Nima Mohamadbeigi,Nassim Rafiefard,Faezeh Ejehi,Raheleh Mohammadpour,Azam Iraji zad
标识
DOI:10.1002/ente.202301136
摘要
The imperative to meet the energy needs of contemporary electronic devices has spurred extensive exploration into self‐powered systems. Given the anticipated ubiquity of sensor networks in future cities, a novel battery‐free sensing paradigm, rooted in triboelectric nanogenerators (TENG), has gained prominence. Utilizing mechanical energy otherwise wasted daily for electricity generation presents a promising alternative to conventional sensors. Embedding the sensing electrode within the TENG structure enables the creation of gas sensors suitable for portable and wireless applications. This study focuses on fabricating a 3D microporous sponge of polydimethylsiloxane (PDMS) using sugar cubes and graphene oxide (GO) nanosheets. Leveraging the hydrophilic properties of the GO enhances moisture absorption, elevating the humidity sensor's responsivity. In addition, the porous structure not only improves sensitivity to high humidity but also mitigates surface saturation issues prevalent in nonporous sensors. The porous self‐powered sensor, composed of PDMS with 0.5 wt% of GO, exhibits a response of up to 2500%, quantified as ((Δ V / V ) × 100%), to relative humidity changes from 20% to 99%. Furthermore, the response and recovery times stand at 1.2 and 2.3 s, respectively. These findings underscore the feasibility of integrating TENG electrodes, utilizing a porous PDMS–GO nanocomposite, to create various types of integrated gas sensors.
科研通智能强力驱动
Strongly Powered by AbleSci AI