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dc.contributor.authorRHEINFELD ALEXANDERen_GB
dc.contributor.authorSTURM JOHANNESen_GB
dc.contributor.authorNOEL ANDREASen_GB
dc.contributor.authorWILHELM JÖRNen_GB
dc.contributor.authorKRISTON AKOSen_GB
dc.contributor.authorPFRANG ANDREASen_GB
dc.contributor.authorJOSSEN ANDREASen_GB
dc.identifier.citationJOURNAL OF THE ELECTROCHEMICAL SOCIETY vol. 166 no. 2 p. A151-A177en_GB
dc.identifier.issn0013-4651 (online)en_GB
dc.description.abstractMeasurement data gained from quasi-isothermal external short circuit tests on single-layered pouch-type Li-ion cells presented in the first part of this combined work was used to validate a well-known homogenized physical-chemical model for different electrode loadings, cell temperatures, initial cell voltages, and external short circuit resistances. Accounting for diffusion-limited reaction kinetics, effective solid phase diffusion coefficients, and one representative active material particle size within each electrode, the model is capable of describing the experimentally observed characteristic change in magnitudes of current and heat generation rate throughout the short circuit. Underlying mechanisms for the observed characteristics are studied by evaluating the predicted concentration distribution across the electrodes and separator and by calculating the cell polarization due to ohmic losses, diffusion processes, and reaction kinetics. The importance of mass transport in the solid and liquid phase limiting reaction kinetics is discussed and evaluated in the context of a sensitivity analysis. Concentration dependent transport properties, electrode tortuosity, particle size, and electrode energy density are affecting different stages of a short circuit. Simulation results suggest a strong impact of electrode design on the short circuit dynamics allowing for an optimization regarding a cell’s energy and power characteristics whilst guaranteeing a high short circuit tolerance.en_GB
dc.description.sponsorshipJRC.C.1-Energy Storageen_GB
dc.titleQuasi-isothermal external short circuit tests applied to lithium-ion cells: part II. modelling and simulationen_GB
dc.typeArticles in periodicals and booksen_GB
dc.identifier.doi10.1149/2.0071902jes (online)en_GB
JRC Directorate:Energy, Transport and Climate

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