| People | Locations | Statistics |
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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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Garcia-Araez, Nuria
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2023Combined electrochemical, XPS, and STXM study of lithium nitride as a protective coating for lithium metal and lithium–sulfur batteriescitations
- 2023A polyacrylonitrile shutdown film for prevention of thermal runaway in lithium-ion cells
- 2022Impact of Compression on the Electrochemical Performance of the Sulfur/Carbon Composite Electrode in Lithium-Sulfur Batteriescitations
- 2022Operando characterization of active surface area and passivation effects on sulfur-carbon composites for lithium-sulfur batteriescitations
- 2022Operando characterization of active surface area and passivation effects on sulfur-carbon composites for lithium-sulfur batteriescitations
- 2022Impact of compression on the electrochemical performance of the sulfur/carbon composite electrode in lithium–sulfur batteriescitations
- 2022Impact of compression on the electrochemical performance of the sulfur/carbon composite electrode in lithium–sulfur batteriescitations
- 2021Negating the interfacial resistance between solid and liquid electrolytes for next-generation lithium batteriescitations
- 2021Cell design for the electrodeposition of polyacrylonitrile onto graphite composite electrodes for use in lithium-ion cellscitations
- 2021Cell design for the electrodeposition of polyacrylonitrile onto graphite composite electrodes for use in lithium-ion cellscitations
- 2018Understanding and development of olivine LiCoPO4 cathode materials for lithium-ion batteriescitations
Places of action
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article
Operando characterization of active surface area and passivation effects on sulfur-carbon composites for lithium-sulfur batteries
Abstract
Sulfur electrodes for lithium-sulfur batteries necessarily contain a conductive additive, typically carbon, to enable the electrochemical reactions, since sulfur and the discharge product, Li2S, are insulators. Consequently, the full passivation of carbon, by deposition of sulfur and/or Li2S, would necessarily produce the death of the battery. However, here we demonstrate that for high-performance lithium-sulfur batteries operated under lean electrolyte conditions (electrolyte to sulfur ratio of 6 µL mgS−1 in Li-S coin cells), the extent of passivation of carbon is not severe enough to limit performance. This is shown by performing impedance measurements of fully charged lithium-sulfur batteries, from which we demonstrate that we can evaluate the specific surface area of carbon, and we find that the capacity fade with cycling is not due to a decrease in the electrochemically active surface area of carbon. These results show that introducing a higher surface area carbon in the sulfur electrode formulation is not needed to prevent passivation, and that the focus of lithium-sulfur development should be directed towards other issues, such as mitigating undesirable reactions at the lithium electrode and achieving robust sulfur electrode structures enabling fast transport of electrolyte species and, thus, more homogeneous reactions.