3D 打印拉胀结构辅助压电能量收集和传感,Advanced Energy Materials

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3D 打印拉胀结构辅助压电能量收集和传感
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2023-07-16 , DOI: 10.1002/aenm.202301159
Xinran Zhou _{1,

2} , Kaushik Parida ₁ , Jian Chen ₁ , Jiaqing Xiong ₁ , Zihao Zhou ₁ , Feng Jiang ₁ , Yangyang Xin _{1,

2} , Shlomo Magdassi _{2,

3} , Pooi See Lee _{1,

2}

Affiliation

可穿戴电子系统的快速发展需要一种可持续的能源，能够从周围环境中获取能量，并且不需要频繁充电。压电聚合物薄膜具有灵活性、良好的压电性以及由于其固有的极化而具有不受环境影响的稳定性能，是制造压电纳米发电机（PENG）以从环境中获取机械能的完美候选者。然而，由于分子极化和不可拉伸性，它们的大多数应用仅限于基于 3-3 方向压电效应的按压模式能量收集。在这项工作中，通过在基于聚合物薄膜的 PENG 上 3D 打印拉胀结构，PENG的弯曲变形可以转化为良好控制的面内拉伸变形，从而实现3-1方向的压电效应。拉胀结构的同拉效应首次应用于柔性能量收集装置，使得之前未开发的薄膜弯曲变形成为有价值的能量收集装置，并将PENG的弯曲输出电压提高了8.3倍。拉胀结构辅助的 PENG 还被证明是一种传感器，可以通过安装在人体和软机器人手指的不同关节上来感知弯曲角度并监测运动。这使得之前未开发的薄膜弯曲变形成为一种有价值的能量收集装置，并将 PENG 的弯曲输出电压提高了 8.3 倍。拉胀结构辅助的 PENG 还被证明是一种传感器，可以通过安装在人体和软机器人手指的不同关节上来感知弯曲角度并监测运动。这使得之前未开发的薄膜弯曲变形成为一种有价值的能量收集装置，并将 PENG 的弯曲输出电压提高了 8.3 倍。拉胀结构辅助的 PENG 还被证明是一种传感器，可以通过安装在人体和软机器人手指的不同关节上来感知弯曲角度并监测运动。

"点击查看英文标题和摘要"

3D Printed Auxetic Structure-Assisted Piezoelectric Energy Harvesting and Sensing

The fast development of wearable electronic systems requires a sustainable energy source that can harvest energy from the ambient environment and does not require frequent charging. Piezoelectric polymer films are a perfect candidate for fabricating piezoelectric nanogenerators (PENGs) to harvest mechanical energy from the environment due to their flexibility, good piezoelectricity, and environmental-independent stable performance because of their inherent polarization. However, most of their applications are limited to the pressing mode energy harvesting that is based on the 3-3-direction piezoelectric effect due to the molecular polarization and nonstretchability. In this work, by 3D printing an auxetic structure on a polymer film-based PENG, the bending deformation of the PENG can be transformed into the well-controlled in-plane stretching deformation, enabling the 3-1-direction piezoelectric effect. The synclastic effect of the auxetic structure is applied in flexible energy harvesting device for the first time, which makes the previously untapped bending deformation on a film a valuable device for energy harvesting and increases the bending output voltage of the PENG by 8.3 times. The auxetic structure-assisted PENG is also demonstrated as a sensor to sense the bending angle and monitor the motion by mounting on different joints of the human body and soft robotic finger.

更新日期：2023-07-16

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