Control of Dendrites in Rechargeable Batteries using Smart Charging

Abstract

In this paper we develop a feed-back control framework for the real-time minimization of microstructures grown within the rechargeable battery. Due to quickening nature of the branched evolution, we identify the critical ramified peaks in the early stages and based on the state we compute the relaxation time for the concentration in those branching fingers. The control parameter is a function of the maximum curvature (i.e. minimum radius) of the branched microstructure, where the higher rate dendritic evolution would lead to the more critical state to be controlled. The charging time is minimized for generating the most packed microstructures and obtained results correlate closely with those of considerably higher charging time periods. The developed framework could be utilized as a smart charging protocol for the safe and sustainable operation the rechargeable batteries, where the branching of the microstructures could be correlated to the sudden variation in the current/voltage.

arXiv comment17 pages, 14 figures.arXiv admin note: text overlap with arXiv:1908.02362

References in corpus (4)

• Diffuse-Charge Dynamics in Electrochemical Systems
• Enhanced strength and temperature dependence of mechanical properties of Li at small length scales and its implications for Li metal anodes
• Morphological instability during steady electrodeposition at overlimiting currents
• Finite Pulse Waves for Efficient Suppression of Evolving Mesoscale Dendrites in Rechargeable Batteries