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Stabilisation of th...
Stabilisation of the superoxide anion in bis(fluorosulfonyl)imide (FSI) ionic liquid by small chain length phosphonium cations: Voltammetric, DFT modelling and spectroscopic perspectives
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- Garcia-Quintana, Laura (författare)
- Deakin University
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- Jonsson, Erlendur, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Yunis, Ruhamah (författare)
- Deakin University,Queensland University of Technology (QUT)
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- MacFarlane, Douglas R. (författare)
- Monash University
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- Forsyth, Maria (författare)
- Deakin University
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- Bond, Alan M. (författare)
- Monash University
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- Howlett, Patrick C. (författare)
- Deakin University
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- Pozo-Gonzalo, Cristina (författare)
- Deakin University
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- Engelska.
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Ingår i: Electrochemistry Communications. - : Elsevier BV. - 1388-2481. ; 127
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Ionic liquids (ILs) containing the bis(fluorosulfonyl)imide anion, FSI, have been investigated as electrolytes for metal-air batteries. Full chemical reversibility is found for the reduction of oxygen to superoxide at 60 degrees C under short time scale conditions of cyclic voltammetry at a glassy carbon electrode when the IL contains the small chain length triisobutyl(methyl)phosphonium rather than a pyrrolidinium cation. DFT calculations suggest that this is a consequence of the higher ion pair association energy and shorter intermolecular distance associated with the interaction of the superoxide anion with the phosphonium cation. Stabilization on longer timescales was also established by spectroscopic techniques when the phosphonium based ILs were exposed to KO2. Studies on superoxide stability in related ionic liquids containing the triisobutyl(methyl)phosphonium cation with the fluorosulfonyl(trifluoromethanesulfonyl)imide, FTFSI, or bis(trifluoromethanesulfonyl)imide, TFSI, anions are also reported.Y
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Nyckelord
- Phosphonium cation
- Oxygen reduction reaction
- Ionic liquids
- Enhancement of superoxide stability
- Metal-air batteries
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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