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Stabilizing the Cat...
Stabilizing the Cathode Interphase of LNMO using an Ionic-liquid based Electrolyte
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- Østli, Elise R. R. (author)
- NTNU Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway.
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- Mathew, Alma (author)
- Uppsala universitet,Strukturkemi
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- Tolchard, Julian R. R. (author)
- SINTEF Ind, N-7491 Trondheim, Norway.
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- Brandell, Daniel, 1975- (author)
- Uppsala universitet,Strukturkemi
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- Svensson, Ann Mari (author)
- NTNU Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway.
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- Selbach, Sverre M. M. (author)
- NTNU Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway.
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- Wagner, Nils P. P. (author)
- NTNU Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway.;SINTEF Ind, N-7491 Trondheim, Norway.
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NTNU Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway Strukturkemi (creator_code:org_t)
- John Wiley & Sons, 2023
- 2023
- English.
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In: Batteries & Supercaps. - : John Wiley & Sons. - 2566-6223. ; 6:7
- Related links:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The ionic liquid (IL)-based electrolyte comprising 1.2 M lithium bis(fluorosulfonyl)imide (LiFSI) in N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (PYR13FSI) (ILE) has been evaluated as a suitable system for the high-voltage cathode material LiNi0.5-xMn1.5+xO4 (LNMO) when cycled vs. graphite anodes. The oxidative stability of the ILE was evaluated by linear sweep voltammetry (LSV) and synthetic charge-discharge profile voltammetry (SCPV) and was found to exceed that of state-of-the-art 1 M LiPF6 in 1 : 1 ethylene carbonate (EC) : diethylcarbonate (DEC) (LP40). Improved cycling performance both at 20 degrees C and 45 degrees C was found for LNMO||graphite full cells with the IL electrolyte. X-ray photoelectron spectroscopy (XPS) analysis showed that robust and predominantly inorganic surface layers were formed on the LNMO cathode using the ILE, which stabilized the electrode. Although the high viscosity of the ILE limits the rate performance at 20 degrees C, this ILE is a promising alternative electrolyte for use in lithium-ion batteries (LiBs) with high-voltage cathodes such as LNMO, especially for use at elevated temperatures.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- energy conversion
- high-voltage cathode
- ionic liquid
- lithium-ion battery
- sustainable chemistry
- Kemi med inriktning mot materialkemi
- Chemistry with specialization in Materials Chemistry
Publication and Content Type
- ref (subject category)
- art (subject category)
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