| Title: | On thermal safety characteristics of rechargeable alkaline batteries based on zinc and manganese dioxide |
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| Authors: | ID Rojas Alva, Wilson Ulises (Author)
ID Mancini, Lucia (Author)
ID Mauko Pranjić, Alenka (Author)
ID Marini, Emanuele (Author)
ID Bozzini, Benedetto (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0957582025004422
 PDF - Presentation file, download (2,12 MB)
MD5: 3AB1FC6011628FFB71D5BF47ED7EC474
 DOCX - Supplement, download (2,00 MB)
MD5: 2BB4907FEDE4F4E447B1B6FE5F9CA39A
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | As lithium-ion technology's exhibits inherent issues with safety due to thermal runaway, a sustainable and cheaper alternative has been proposed in this work: the rechargeable alkaline battery chemistry. However, so far, the postulated safety of the new battery chemistry has not been demonstrated adequately. Therefore, a safety study is being carried out for rechargeable alkaline battery cells. This Short Communication paper is the first report on the thermal safety of Zn-MnO₂ CR2032 rechargeable alkaline battery coin cells. 100% charged coin cells were tested under thermal abuse conditions in a gravity-convection furnace to quantify the temperature at which the cell would go into thermal runaway. Morphological characterisation of pristine and tested cells was performed via laboratory-based X-ray computed microtomography. The onset temperature to thermal runaway for the rechargeable alkaline battery cells was found to be in the range of 290-380 °C, much higher than that reported in the literature for lithium-ion cells (150-200 °C) of similar capacity and geometry. These results emphasise that rechargeable alkaline battery technology has improved thermal stability compared to lithium-ion technology. Lastly, morphological analyses highlighted the variations of cell geometry brought about by thermal testing. |
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| Keywords: | rechargeable alkaline battery, thermal runaway, battery degradation, MnO2, Zn, zinc, X-ray microtomography |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 11.05.2025 |
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| Publisher: | Institution of Chemical Engineers |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-8 |
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| Numbering: | Vol. 199, [article no.] 107175 |
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| PID: | 20.500.12556/DiRROS-22500  |
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| UDC: | 621.35/.36 |
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| ISSN on article: | 1744-3598 |
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| DOI: | 10.1016/j.psep.2025.107175 |
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| COBISS.SI-ID: | 236338435 |
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| Copyright: | © 2025 The Authors |
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| Publication date in DiRROS: | 23.05.2025 |
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| Views: | 775 |
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| Downloads: | 482 |
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