| Title: | Electrochemical cycling behaviour and shape changes of Zn electrodes in mildly acidic aqueous electrolytes containing quaternary ammonium salts |
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| Authors: | ID Bozzini, Benedetto (Author)
ID Boniardi, Marco (Author)
ID Caielli, Tommaso (Author)
ID Casaroli, Andrea (Author)
ID Emanuele, Elisa (Author)
ID Mancini, Lucia (Author)
ID Sodini, Nicola (Author)
ID Strada, Jacopo (Author) |
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| Files: |  PDF - Presentation file, download (2,52 MB)
MD5: 290CC7DDA5B2994DD4CA4B58A0D6FFB1
 URL - Source URL, visit https://doi.org/10.1002/celc.202201130
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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: | Secondary Zn–based batteries are a valid alternative to Li for stationary storage, but commercial devices are not yet available, chiefly owing to anode shape-change and passivation issues. Mildly acidic aqueous solutions are actively studied, since they seem to limit unstable growth of Zn, with respect to the alkaline ones, customary for primary batteries. Additives can further improve the performance of mildly acidic electrolytes. In this work we focus on the impact of a series of quaternary ammonium salts (TBAB, CTAB, DMDTDAB, BDMPAC, BPPEI, PDADMAC), selected to represent a comprehensive range of molecular functionalities. Electrochemical measurements (cyclic voltammetry, chronopotentiometry and galvanostatic-cycling in split-cells), combined with 2D and 3D imaging techniques (SEM, stereomicroscopy and in situ tomography) were adopted for the assessment Zn behaviour. This multi-technique approach pinpointed TBAB as the single most effective additive for low-current density operation, while at high current densities the additive-free electrolyte allows better cycling performance, coherently with similar results for alkaline electrolytes. |
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| Keywords: | battery, electrolyte, electrochemical measurements, quaternary Ammomium salt, X-ray computed microtomography, mobility |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 02.02.2023 |
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| Publisher: | Wiley-VCH |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-14 |
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| Numbering: | iss. 12, Vol. 10 |
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| PID: | 20.500.12556/DiRROS-16238  |
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| UDC: | 544.5/.6 |
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| ISSN on article: | 2196-0216 |
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| DOI: | 10.1002/celc.202201130 |
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| COBISS.SI-ID: | 140669699 |
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| Copyright: | © 2023The Authors. ChemElectroChempublishedby Wiley-VCHGmbH |
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| Note: | Opis vira z dne 3. 2. 2023;
Nasl. z nasl. zaslona;
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| Publication date in DiRROS: | 06.07.2023 |
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| Views: | 367 |
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| Downloads: | 160 |
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