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arXiv · 2501.08681

General hybrid asymmetric capacitor model: validation with a commercial lithium ion capacitor

Jose Miguel Campillo-Robles·Xabier Artetxe·Karmele del Teso Sánchez·Cesar Gutiérrez·Haritz Macicior·Stephan Röser·Ralf Wagner·Martin Winter
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Abstract

Modelling and numerical simulations play a vital role in the design and optimization of electrochemical energy storage devices. In this study, a general physics-based model is developed to describe Hybrid Asymmetric Capacitors (HACs). A one-dimensional cell is constructed with one faradaic electrode, a separator and a capacitive electrode. The model is validated using a commercial Lithium Ion Capacitor (LIC). Galvanostatic charge and discharge processes are simulated with a maximum mean relative error of 7.8 %. This suggest that this simple Ohmic model captures the key electrochemical phenomena occurring inside the LIC cell.

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Jose Miguel Campillo-Robles, Xabier Artetxe, Karmele del Teso Sánchez, Cesar Gutiérrez, Haritz Macicior, Stephan Röser, Ralf Wagner, Martin Winter. 2025-01-15. General hybrid asymmetric capacitor model: validation with a commercial lithium ion capacitor. https://doi.org/10.1016/j.jpowsour.2019.03.121

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