介电聚合物涂层超级电容器的微观储能机制
Microscopic Energy Storage Mechanism of Dielectric Polymer-Coated Supercapacitors
AI总结：
本文提出双电层结构理论框架中的偶极子诱导效应，通过分子动力学和介电超级电容器实验验证，使低电压下积分电容提升超50%，为储能技术发展开辟新途径。
摘要：
超级电容器作为极具前景的储能器件备受关注。然而，电解质溶液的电压窗口限制阻碍了其电容的提升。为解决此问题并增强传统超级电容器的储能能力，我们提出了在双电层结构理论框架中观察到的偶极子诱导效应。分子动力学结果表明，与传统系统相比，在低电压下积分电容提升了50%以上。此外，采用水合电解质溶液的介电超级电容器的新材料实验结果证实了所提模型的有效性，结果一致。我们将电容的大幅变化归因于偶极子的重新取向，这引发了中性到双层的转变和过屏蔽到空间位阻的转变，与实验中聚合物的极化过程一致。我们进一步研究了不同偶极子参数下的电容变化，如层数、数密度和间距的不同，从而丰富了实验结果。
英文摘要：
Supercapacitors have been attracting significant attention as promising energy storage devices. However, the voltage window limitation associated with electrolyte solutions has hindered the improvement of their capacitance. To address this issue and enhance the energy storage capabilities of general traditional supercapacitors, we put forward the dipole induced effects observed in the theoretical framework of the electric double-layer structure. The molecular dynamics results demonstrate that, compared to traditional systems, an improvement of over 50% in integral capacitance at low voltages is achieved. Moreover, a new material-based experimental results obtained from a dielectric supercapacitor employing a hydrated electrolyte solution corroborated the effectiveness of our proposed model, yielding consistent outcomes. We attribute the large capacitance variation to the reorientation of the dipoles, which induces the neutral-to-bilayer transition and the overscreening-to-steric transition, consistent with the polarization process of the polymer in the experiment. We further investigate the capacitance variations under different dipole parameters, such as varying the number of layers, different number densities and different spacings, thereby enriching the experimental results with additional conclusions not previously obtained. This work presents a novel approach that exploits dipole-induced capacitance effects, paving the way for further advances in the field of energy storage technology.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
