Electrode-scale heterogeneity can combine with complex electrochemical interactions to impede lithium-ion battery performance, particularly during fast charging. This research investigates the influence of electrode heterogeneity at different scales on the lithium-ion battery electrochemical performance under operational extremes. We employ image-based mesoscale simulation in conjunction with a three-dimensional electrochemical model to predict performance variability in 14 graphite electrode X-ray computed tomography data sets. Our analysis reveals that the tortuous anisotropy stemming from the variable particle morphology has a dominating influence on the overall cell performance. Cells with platelet morphology achieve lower capacity, higher heat generation rates, and severe plating under extreme fast charge conditions. On the contrary, the heterogeneity due to the active material clustering alone has minimal impact. Our work suggests that manufacturing electrodes with more homogeneous and isotropic particle morphology will improve electrochemical performance and improve safety, enabling electromobility.
Parmananda, Mukul, et al. "Probing the Role of Multi-scale Heterogeneity in Graphite Electrodes for Extreme Fast Charging." ACS Applied Materials and Interfaces, vol. 14, no. 16, Apr. 2022. https://doi.org/10.1021/acsami.1c25214
Parmananda, Mukul, Norris, Chance, Roberts, Scott A., & Mukherjee, Partha P. (2022). Probing the Role of Multi-scale Heterogeneity in Graphite Electrodes for Extreme Fast Charging. ACS Applied Materials and Interfaces, 14(16). https://doi.org/10.1021/acsami.1c25214
Parmananda, Mukul, Norris, Chance, Roberts, Scott A., et al., "Probing the Role of Multi-scale Heterogeneity in Graphite Electrodes for Extreme Fast Charging," ACS Applied Materials and Interfaces 14, no. 16 (2022), https://doi.org/10.1021/acsami.1c25214
@article{osti_1870491,
author = {Parmananda, Mukul and Norris, Chance and Roberts, Scott A. and Mukherjee, Partha P.},
title = {Probing the Role of Multi-scale Heterogeneity in Graphite Electrodes for Extreme Fast Charging},
annote = {Electrode-scale heterogeneity can combine with complex electrochemical interactions to impede lithium-ion battery performance, particularly during fast charging. This research investigates the influence of electrode heterogeneity at different scales on the lithium-ion battery electrochemical performance under operational extremes. We employ image-based mesoscale simulation in conjunction with a three-dimensional electrochemical model to predict performance variability in 14 graphite electrode X-ray computed tomography data sets. Our analysis reveals that the tortuous anisotropy stemming from the variable particle morphology has a dominating influence on the overall cell performance. Cells with platelet morphology achieve lower capacity, higher heat generation rates, and severe plating under extreme fast charge conditions. On the contrary, the heterogeneity due to the active material clustering alone has minimal impact. Our work suggests that manufacturing electrodes with more homogeneous and isotropic particle morphology will improve electrochemical performance and improve safety, enabling electromobility.},
doi = {10.1021/acsami.1c25214},
url = {https://www.osti.gov/biblio/1870491},
journal = {ACS Applied Materials and Interfaces},
issn = {ISSN 1944-8244},
number = {16},
volume = {14},
place = {United States},
publisher = {American Chemical Society (ACS)},
year = {2022},
month = {04}}