@article{d668d76d69e74fbca251f2413b517812,
title = "Charging dynamics in a laminate-electrode model for graphene-based supercapacitors",
abstract = "Development of porous electrode materials for high-performance supercapacitors depends on the efficiency of pore utilization for charge storage. It remains an experimental and theoretical challenge to quantitatively relate the porous structure to charging dynamics. Here, based on a laminate-electrode model of graphene-based supercapacitors, we perform the equivalent circuit model to characterize the structure-charging dynamics relationship of porous electrodes by coupling key structural features in a mathematical expression for the Resistor-Capacitor (RC) time. This theoretical description is validated by direct numerical calculations of the Poisson-Nernst-Planck (PNP) equations. We discover that the charging dynamics of graphene-based supercapacitors is dominated by the ion diffusion from the electrolyte region into the layered structure. The predicted charging time compares well with the experimental investigations reported in the literature on graphene-based supercapacitors. Our work bridges nanoscopic transport behaviors with macroscopic devices, providing theoretical insights of the structure-dependent ion transport in two-dimensional materials-based films for compact energy storage.",
keywords = "Poisson-Nernst-Planck equations, Charging dynamics, Equivalent circuit model, Laminate-electrode model, Supercapacitor",
author = "Haolan Tao and Zhi Xu and Cheng Lian and {van Roij}, Rene and Honglai Liu",
note = "Funding Information: This work is sponsored by the National Key R&D Program of China (No. 2019YFC1906702), the National Natural Science Foundation of China (Nos. 91834301, 22078088), and the Shanghai Rising‐Star Program (No. 21QA1401900). This work is part of the D‐ITP consortium, a program of the Netherlands Organization for Scientific Research (NWO) that is funded by the Dutch Ministry of Education, Culture and Science (OCW). Cheng Lian and Ren{\'e} van Roij acknowledge the EU‐FET project NANOPHLOW (REP‐766972‐1). Haolan Tao gratefully acknowledges the financial support from China Scholarship Council. Funding Information: This work is sponsored by the National Key R&D Program of China (No. 2019YFC1906702), the National Natural Science Foundation of China (Nos. 91834301, 22078088), and the Shanghai Rising-Star Program (No. 21QA1401900). This work is part of the D-ITP consortium, a program of the Netherlands Organization for Scientific Research (NWO) that is funded by the Dutch Ministry of Education, Culture and Science (OCW). Cheng Lian and Ren{\'e} van Roij acknowledge the EU-FET project NANOPHLOW (REP-766972-1). Haolan Tao gratefully acknowledges the financial support from China Scholarship Council. Publisher Copyright: {\textcopyright} 2023 American Institute of Chemical Engineers.",
year = "2023",
month = oct,
doi = "10.1002/aic.18189",
language = "English",
volume = "69",
journal = "AICHE Journal",
issn = "0001-1541",
publisher = "American Institute of Chemical Engineers",
number = "10",
}