Benedetto Bozzini (Author), Marco Boniardi (Author), Tommaso Caielli (Author), Andrea Casaroli (Author), Elisa Emanuele (Author), Lucia Mancini (Author), Nicola Sodini (Author), Jacopo Strada (Author)

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.

Keywords

baterija;elektroliti;elektrokemijske meritve;kvartarna amonijeva sol;rentgenska računalniška mikrotomografija;mobilnost;odprti dostop;battery;electrolyte;electrochemical measurements;quaternary Ammomium salt;X-ray computed microtomography;mobility;open access;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: ZAG - Slovenian National Building and Civil Engineering Institute
Publisher: Wiley-VCH
UDC: 544.5/.6
COBISS: 140669699 Link will open in a new window
ISSN: 2196-0216
Views: 10
Downloads: 3
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Other data

Secondary language: Slovenian
Secondary keywords: baterija;elektroliti;elektrokemijske meritve;kvartarna amonijeva sol;rentgenska računalniška mikrotomografija;mobilnost;
Source comment: Opis vira z dne 3. 2. 2023; Nasl. z nasl. zaslona;
Pages: str. 1-14
Volume: ǂVol. ǂ10
Issue: ǂiss. ǂ12, [article no.] e202201130
Chronology: Jun. 2023
DOI: 10.1002/celc.202201130
ID: 19487947