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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hollenkamp, Anthony
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2022Sustainable cyanide-C60 fullerene cathode to suppress the lithium polysulfides in a lithium-sulfur batterycitations
- 2022Coating Methods
- 2021Long-Life Power Optimised Lithium-ion Energy Storage Device
- 2021Comparing Physico-, Electrochemical and Structural Properties of Boronium vs Pyrrolidinium Cation Based Ionic Liquids and Their Performance as Li-ion Battery Electrolytescitations
- 2021Conjugated Microporous Polycarbazole-Sulfur Cathode Used in a Lithium-Sulfur Battery
- 2020In situ synchrotron XRD and sXAS studies on Li-S batteries with ionic-liquid and organic electrolytescitations
- 2019Electrochemically controlled deposition of ultrathin polymer electrolyte on complex microbattery electrode architecturescitations
- 2019Organic salts utilising the hexamethylguanidinium cation: the influence of the anion on the structural, physical and thermal propertiescitations
- 2018From Lithium Metal to High Energy Batteries
- 2018Integrating polymer electrolytes: A step closer to 3D-Microbatteries for MEMS
- 2017Electrochemistry of Lithium in Ionic Liquids - Working With and Without a Solid Electrolyte Interphase
- 2017A step closer to 3D-Microbatteries for sensors: integrating polymer electrolytes
- 2016Optimising the concentration of LiNO3 additive in C4mpyr-TFSI electrolyte-based Li-S batterycitations
- 2015S/PPy composite cathodes for Li-S batteries prepared by facile in-situ 2-step electropolymerisation process
- 2015Ionic transport through a composite structure of N-ethyl-N-methylpyrrolidinium tetrafluoroborate organic ionic plastic crystals reinforced with polymer nanofibrescitations
- 2013Extensive charge-discharge cycling of lithium metal electrodes achieved using ionic liquid electrolytescitations
- 2012Corrosion in amine post combustion capture plants
- 2010The influence of conductive additives and inter-particle voids in carbon EDLC electrodescitations
- 2010In situ NMR Observation of the Formation of Metallic Lithium Microstructures in Lithium Batteriescitations
- 2010Ionic Liquids with the Bis(fluorosulfonyl)imide (FSI) anion: Electrochemical properties and applications in battery technologycitations
Places of action
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article
Organic salts utilising the hexamethylguanidinium cation: the influence of the anion on the structural, physical and thermal properties
Abstract
The synthesis and characterisation of new solid-state electrolytes is a key step in advancing the development of safer and more reliable electrochemical energy storage technologies. Organic ionic plastic crystals (OIPCs) are an increasingly promising class of material for application in devices such as lithium or sodium metal batteries as they can support high ionic conductivity, with good electrochemical and thermal stability. However, the choice of OIPC-forming ions is still relatively limited. Furthermore, understanding of the influence of different cations and anions on the thermal, structural and transport properties of these materials is still in its infancy. Here we report the synthesis and in-depth characterisation of a range of new OIPCs utilising the hexamethylguanidinium cation ([HMG]) with five different anions. The thermal, structural, transport properties and free volume in the different salts have been investigated. The free volume within the salts has been investigated by positron annihilation lifetime spectroscopy, and the single crystal and powder X-ray diffraction analysis of [HMG] bis(trifluoromethanesulfonyl)imide ([TFSI]) in phase I and II, [HMG] hexafluorophosphate ([PF6]) and [HMG] tetrafluoroborate ([HMG][BF4]) are reported. The HMG cation can exhibit significant disorder, which is advantageous for plasticity and future use of these materials as high ionic conductivity matrices. The bis(fluorosulfonyl)imide salt, [HMG][FSI], is identified as particularly promising for use as an electrolyte, with good electrochemical stability and soft mechanical properties. The findings introduce a range of new materials to the solid-state electrolyte arena, while the insights into the physico-chemical relationships in these materials will be of importance for the future development and understanding of other ionic electrolytes.