Influence of shape effect on dynamic surface charge transport mechanism of cellular electret after corona discharge
Influence of shape effect on dynamic surface charge transport mechanism of cellular electret after corona discharge
复制标题
形状效应对电晕放电后细胞驻极体动态表面电荷输运机制的影响
DOI：
10.1088/2058-6272/ac5973
复制
发表时间：
2022-03
影响因子：
1.7
通讯作者：
Yifan Liu
中科院分区：
文献类型：
--
作者：
Jia-Wei Zhang;Zelei Zhang;T Matsumoto;Qingqing Gao;Yuanye Liu;K Nishijima;Yifan Liu
多孔聚丙烯的表面电荷积累和传输在纳米发电机中起着重要作用，这可能对零碳能源系统和物联网的能量收集和可穿戴设备产生潜在影响。不同形状的聚合物具有不同的电荷积累和衰减特性。因此，我们通过实验和建模研究了样品形状对表面电荷衰减的影响。采用静电电容探针二维表面电位测量系统，测量了方形和圆形微孔聚丙烯的表面电位。实验结果表明，方形样品的表面电位分布由钟形向单侧塌陷形非均匀消散，而圆形样品的表面电位分布由钟形向火山口形均匀消散。此外，对方形和圆形多孔聚丙烯初始表面电位分布的模拟结果与实验结果一致。研究表明，电荷传输过程与样品的形状相关，这为设计用于高效纳米发电机的驻极体材料提供了重要参考。
Surface charge accumulation and transport on cellular polypropylene play an important role in nanogenerators, which could have a potential impact on energy harvesting and wearable devices for zero carbon energy systems and the internet of things. Different shapes have different charge accumulation and decay characteristics of the polymer. Therefore, we studied the influence of the sample’s shape on the surface charge decay by experiment and modeling. The surface potential of square and circular cellular polypropylene was measured by a two-dimensional surface potential measurement system with electrostatic capacitive probe. The experimental result shows that the surface potential distribution of the square sample dissipates non-uniformly from the bell.shape to a one-sided collapsed shape, while that of the circular sample dissipates uniformly from the bell shape to the crater-like shape. Moreover, the simulated results of the initial surface potential distributions of the square and circular cellular polypropylene are consistent with the experimental results. The investigation demonstrates that the charge transport process is correlated with the shape of the sample, which provides significant reference for designing.electret material used for highly efficient nanogenerators.