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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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Barghamadi, Marzieh
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 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
- 2020In situ synchrotron XRD and sXAS studies on Li-S batteries with ionic-liquid and organic electrolytescitations
- 2018From Lithium Metal to High Energy Batteries
- 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
Places of action
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document
S/PPy composite cathodes for Li-S batteries prepared by facile in-situ 2-step electropolymerisation process
Abstract
In this work a direct process for fabricating sulfur cathodes with high capacity for Li-S batteries is described obviating the need for the traditional sulfur cathode preparation using lengthy pasting and casting methods and at the same time having better control over the physical and electrochemical properties of the prepared cathodes. The process involves two electropolymerisation steps using polypyrrole conductive polymer with the first utilising a bulky polymeric dopant such as Nafion, polystyrene sulfonate or polyacrylic acid and the second involving a low molecular weight inorganic or organic dopant such as lithium sulphate or p-toluene sulfonate . Besides sulfur, carbon black was added to the electropolymerisation mixture to enhance the dispersion of sulfur and to improve the electrical conductivity of the final product. The process of cathode preparation can take up to 3 hrs and can be scaled up to suit larger cathodes requirements with dimensions around 100 cm2 for pouch cell preparation. Two types of flexible conductive substrates were used in this work; fine stainless steel mesh and carbon cloth fabric. The prepared cathodes were characterised by SEM and revealed highly porous structure and uniform coating compared to cathodes prepared by single step electropolymerisation. Coin and pouch cells were prepared using these cathodes and showed high capacity (~ 1000 mAh/g), efficiency (> 97%) and good capacity retention after 50 cycles at a C/10 current rate.