Revealing how internal sensors in a smart battery impact the local graphite lithiation mechanism
Year: 2024
Type: article
Abstract: Smart batteries, i.e. equipped with internal and external sensors, are emerging as promising solutions to enhance battery state of health and optimize operating conditions. However, for accurate correlations between the evolution of the cell parameters (e.g. temperature, strain) and physicochemical degradation mechanisms, it is crucial to know the reliability of sensors. To address this question, we performed a synchrotron operando wide-angle X-ray scattering experiment to investigate the local and global impact of the presence of internal sensors on a commercial prismatic Li-ion battery cell at various C-rates. We found that, while the overall electrochemical performance is unaffected, the sensors have a substantial impact on the local graphite lithiation kinetics and heterogeneities especially at a high C-rate. These results show the importance of controlling local deformations induced by internal sensors and tailoring the dimensions of these sensors to obtain reliable battery performance indicators and optimize smart batteries.
Source: Nature Communications
Institutions: Institut polytechnique de Grenoble, Centre National de la Recherche Scientifique, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Grenoble, Laboratoire d’Innovation pour les Technologies des Énergies Nouvelles et les nanomatériaux, University of Tartu, Systèmes Moléculaires et nanoMatériaux pour l'Énergie et la Santé, Université Savoie Mont Blanc, Institut Néel, Institut de Recherche Interdisciplinaire de Grenoble, Laboratoire Modélisation et Exploration des Matériaux, Université Grenoble Alpes
Language: English
Subfield: Automotive Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,790
OpenAlex ID: W4404741498