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Perspective on Mechanistic Modeling of Li-Ion Batteries

Accounts of Materials Research 2022年第8期3卷 843-853页

作者： matthieu dubarry David Beck Hawai’i Natural Energy Institute University of Hawai’i at Ma̅noaHonoluluHawaii 96822United States Hawai‘i Natural Energy Institute University of Hawai‘i at Ma̅noaHonoluluHawaii 96822United States

CONSPECTUS:Though relatively young,the mechanistic modeling approach has gained tremendous traction in the past decade as it was proven to be extremely versatile and effective for lithium-ion battery diagnosis and *** approach is relies on assembling digital twins by matching the individual voltage response of each *** the matching,via scaling or translations,enables replication of the degradation modes electrochemical *** modes comprise the loss of lithium inventory,the loss of active material,and kinetic changes and refer to the impact of degradation mechanisms on the electrodes rather than their root *** degradation mechanism will affect,to some extent,the amount of material able to react,the amount of lithium able to go back and forth between the electrodes,and the overall reaction *** degradation modes open the gate for material-based diagnosis and prognosis without the need for complex *** Account is first a reflection on a decade worth of discussion and validation of several key concepts about using digital twins for advanced diagnosis and prognosis since the seminal publications in the early *** proposing our version of the framework,it has been used to diagnose the degradation of several hundred cells of multiple chemistries and *** made it possible to explain and predict the apparition of knees with the concept of hidden mechanisms and to emulate the impact of *** approach also proved useful to investigate overdischarge and overcharge and to generate big data with millions of synthetic voltage curves enabling the development of advanced diagnosis and prognosis ***,we will focus on the emulation of kinetic changes,of lithium plating both from rate-dependent and rate-independent origins,and on the utilization of synthetic *** Account will also introduce the next decade with proof-of-concept implementations and simulations that will open new d

关键词： diagnosis lithium matching

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