Irujo Izcue, Elisa

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https://academica-e.unavarra.es/handle/2454/52714

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Irujo Izcue

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Elisa

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Ingeniería Eléctrica, Electrónica y de Comunicación

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1173717

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2023 - 20253
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    PublicationOpen Access
    Onset of irreversible reactions in overcharging lithium-ion cells: an experimental and modeling approach
    (IEEE, 2023) Irujo Izcue, Elisa; Berrueta Irigoyen, Alberto; Lalinde Sainz, Iñaki; Arza, Joseba; Sanchis Gúrpide, Pablo; Ursúa Rubio, Alfredo; Ingeniería Eléctrica, Electrónica y de Comunicación; Institute of Smart Cities - ISC; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren
    Lithium-ion batteries are energy storage systems used in an increasing number of applications. Due to their flammable materials, their use entails risks of fire and explosion. The study of the abuse operation of these batteries before reaching the thermal runaway is a relevant research topic to prevent safety issues. There are various studies in the bibliography providing exhaustive thermal studies of the safe operating area, as well as concerning the thermal runaway. However, the onset irreversible reactions, that take place at a SOC around 110%, have not been properly analyzed. We present in this contribution an experimental study of this onset reaction measured in pouch Li-ion cells under various conditions of charge current and temperature. We also propose a lumped-parameter thermal model for the cell, which allows a detailed characterization of this exothermic reaction. The results achieved in this contributions can be a key tool to prevent overcharge accidents that may arise due to malfunctioning of the battery charger or battery management system.
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    PublicationOpen Access
    Methodology for comparative assessment of battery technologies: experimental design, modeling, performance indicators and validation with four technologies
    (Elsevier, 2025-01-15) Irujo Izcue, Elisa; Berrueta Irigoyen, Alberto; Sanchis Gúrpide, Pablo; Ursúa Rubio, Alfredo; Ingeniería Eléctrica, Electrónica y de Comunicación; Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza; Institute of Smart Cities - ISC; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, PJUPNA2023-11380; Gobierno de Navarra / Nafarroako Gobernua
    An increasing number of applications with diverse requirements incorporate various battery technologies. Selecting the most suitable battery technology becomes a tedious task as several aspects need to be taken into account. Two of the key aspects are the battery characteristics under temperature variations and their degradation. While numerous contributions using tailored assessment methods to evaluate both aspects for a particular application exist in the literature, a general methodology for analysis is necessary to enable a quantitative comparison between different technologies. We propose in this paper a novel methodology, based on performance indicators, to quantify the potential and limitations of a battery technology for diverse applications sharing a similar operational profile. A quantification of phenomena such as the influence of high and low temperatures on the battery, or the effect of cycling and state of charge on battery aging is obtained. In pursuit of these indicators, an experimental procedure and the fitting of aging model parameters that allow their calculation are proposed. As an additional outcome of this work, a general aging model that allows comprehensive analysis of aging behavior is developed and the trade-off between experimental time and accuracy is analyzed to find an optimal experimental time between 2 and 4 months, depending on the studied battery technology. Finally, the proposed methodology is applied to four battery technologies in order to show its potential in a real case-study.
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    PublicationOpen Access
    Experimental characterization and aging analysis of commercial 18650 sodium-ion cells
    (IEEE, 2024-08-30) Irujo Izcue, Elisa; Berrueta Irigoyen, Alberto; Sanchis Gúrpide, Pablo; Ursúa Rubio, Alfredo; Ingeniería Eléctrica, Electrónica y de Comunicación; Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza; Institute of Smart Cities - ISC; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, PJUPNA2023-11380
    Extensive use of lithium-ion batteries and scarcity of lithium are leading to re-emergence of sodium-ion batteries as a promising candidate, side-by-side with LIBs, to cover increasing demand of energy storage systems. Thus, development and commercialization of SIBs have been recently accelerated. Scientific research on first commercialized cells has been published regarding its fundamental parameters, aging and thermal performance. However, SIBs still require experimental study to continue developing and maturing their technology. For that reason, this work presents an electrical characterization and aging analysis of a commercial 1.3 Ah 18650 SIB. Based on experimental results obtained, this contribution reveals energy efficiencies of around 92% and an open circuit voltage with a plateau at a SOC of 35%. Regarding aging, samples full cycled at 0.5C exhibit a capacity loss of 15% after 310 cycles and stored cells age at a speed of 0.01 %/day.