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Khalid S, Pianta N, Bonizzoni S, Ferrara C, Lorenzi R, Paleari A, Johansson P, Mustarelli P, Ruffo R. Structure-Property Correlations in Aqueous Binary Na +/K +-CH 3COO - Highly Concentrated Electrolytes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:9823-9832. [PMID: 37255926 PMCID: PMC10226112 DOI: 10.1021/acs.jpcc.3c01017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/02/2023] [Indexed: 06/01/2023]
Abstract
Highly concentrated aqueous binary solutions of acetate salts are promising systems for different electrochemical applications, for example, energy storage devices. The very high solubility of CH3COOK allows us to obtain water-in-salt electrolyte concentrations, thus reducing ion activity and extending the cathodic stability of an aqueous electrolyte. At the same time, the presence of Li+ or Na+ makes these solutions compatible with intercalation materials for the development of rechargeable alkaline-ion batteries. Although there is a growing interest in these systems, a fundamental understanding of their physicochemical properties is still lacking. Here, we report and discuss the physicochemical and electrochemical properties of a series of solutions based on 20 mol kg-1 CH3COOK with different concentrations of CH3COONa. The most concentrated solution, 20 mol kg-1 CH3COOK + 7 mol kg-1 CH3COONa, gives the best compromise between transport properties and electrochemical stability, displaying a conductivity of 21.2 mS cm-1 at 25 °C and a stability window of up to 3 V in "ideal" conditions, i.e., using a small surface area and highly electrocatalytic electrode in a flooded cell. Careful Raman spectroscopy analyses help to address the interaction network, the phase evolution with temperature, and the crystallization kinetics.
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Affiliation(s)
- Shahid Khalid
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Nicolò Pianta
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Simone Bonizzoni
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Chiara Ferrara
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
- National
Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza
e Tecnologia dei Materiali (INSTM), 50121 Firenze, Italy
| | - Roberto Lorenzi
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Alberto Paleari
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Patrik Johansson
- Department
of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Piercarlo Mustarelli
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
- National
Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza
e Tecnologia dei Materiali (INSTM), 50121 Firenze, Italy
| | - Riccardo Ruffo
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
- National
Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza
e Tecnologia dei Materiali (INSTM), 50121 Firenze, Italy
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Nordness O, Kelkar P, Stadtherr MA, Brennecke JF. Ion dissociation in aqueous 1-alkyl-3-methyl-imidazolium chlorides and the impact of microstructure formation. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1635276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Oscar Nordness
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, USA
| | - Pratik Kelkar
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, USA
| | - Mark A. Stadtherr
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, USA
| | - Joan F. Brennecke
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, USA
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Nordness O, Simoni LD, Stadtherr MA, Brennecke JF. Characterization of Aqueous 1-Ethyl-3-Methylimidazolium Ionic Liquids for Calculation of Ion Dissociation. J Phys Chem B 2019; 123:1348-1358. [DOI: 10.1021/acs.jpcb.8b11892] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Oscar Nordness
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Luke D. Simoni
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Mark A. Stadtherr
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Joan F. Brennecke
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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Guo Y, Chen Z, Zuo Y, Chen Y, Yang W, Xu B. Ionic liquids with two typical hydrophobic anions as acidic corrosion inhibitors. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.090] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Corrosion inhibition properties of two imidazolium ionic liquids with hydrophilic tetrafluoroborate and hydrophobic hexafluorophosphate anions in acid medium. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.07.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Soriano AN, Adamos KG, Bonifacio PB, Adornado AP, Bungay VC, Vairavan R. Determination of diffusion coefficients of various livestock antibiotics in water at infinite dilution. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201716201083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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