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Faculty of Engineering Science

Biofabrication – Prof. Dr. Leonid Ionov

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Polymers for energy storage

Development of methods for storage of electrical energy have become highly important in recent time. Among all variety of rechargeable batteries, ones based on lithium deserve particular attention. In fact, lithium is the lightest metal and has the highest oxidation potential among the metals that allows much higher energy density comparing, for example, to Ni-Cd rechargeable batteries. Currently, Li-ion batteries based on LiMn2O4 and LiCoO2 cathodes are practically used. These Li-ion batteries provide good cycling and very high columbic efficiency. On the other hand, they suffer from insufficient energy density. Li-S batteries are the emerging class of rechargeable batteries, which potentially can provide much higher energy density. Although the lithium-sulfur system operates at a comparably low average potential of 2.1V against Li+/Li, it shows a high theoretic specific energy of 2600 Wh/kg due to the extraordinary theoretical specific capacity of 1675 mAh/g of sulfur.

We are interested to develop new porous carbon materials, polymer electrolytes, separators for Li-S batteries. 

Selected publications

Choudhury, Soumyadip; Fischer, Dieter; Formanek, Petr; Stamm, Manfred; Ionov, Leonid
Phase Inversion Strategy to Fabricate Porous Carbon for Li-S Batteries via Block Copolymer Self-Assembly
in Advanced Materials Interfaces (2018) . - pp. 1701116-n/a

Raguzin, Ivan; Choudhury, Soumyadip; Simon, Frank; Stamm, Manfred; Ionov, Leonid
Effect of Current Collector on Performance of Li-S Batteries
in Advanced Materials Interfaces vol. 4 (2017) issue 3
doi:10.1002/admi.201600811 ...

Choudhury, Soumyadip; Azizi, M.; Raguzin, Ivan; Göbel, M.; Michel, S.; Simon, Frank; Willomitzer, A.; Mechtcherine, V.; Stamm, Manfred; Ionov, Leonid
Effect of fibrous separators on the performance of lithium-sulfur batteries
in Physical Chemistry Chemical Physics vol. 19 (2017) issue 18. - pp. 11239-11248
doi:10.1039/C7CP00310B ...

Freitag, Anne; Langklotz, Ulrike; Rost, Axel; Stamm, Manfred; Ionov, Leonid
Ionically conductive polymer/ceramic separator for lithium-sulfur batteries
in Energy Storage Materials vol. 9 (2017) . - pp. 105-111
doi:10.1016/j.ensm.2017.05.014 ...

Freitag, Anne; Stamm, Manfred; Ionov, Leonid
Separator for lithium-sulfur battery based on polymer blend membrane
in Journal of Power Sources vol. 363 (2017) . - pp. 384-391
doi:10.1016/j.jpowsour.2017.07.077 ...

Choudhury, Soumyadip; Agrawal, Mukesh; Formanek, Petr; Jehnichen, Dieter; Fischer, Dieter; Krause, Beate; Albrecht, Victoria; Stamm, Manfred; Ionov, Leonid
Nanoporous Cathodes for High-Energy Li-S Batteries from Gyroid Block Copolymer Templates
in ACS Nano vol. 9 (2015) issue 6. - pp. 6147-6157
doi:10.1021/acsnano.5b01406 ...

Agrawal, Mukesh; Choudhury, Soumyadip; Gruber, Katharina; Simon, Frank; Fischer, Dieter; Albrecht, Victoria; Göbel, Michael; Koller, Stefan; Stamm, Manfred; Ionov, Leonid
Porous carbon materials for Li-S batteries based on resorcinol-formaldehyde resin with inverse opal structure
in Journal of Power Sources vol. 261 (2014) . - pp. 363-370
doi:10.1016/j.jpowsour.2014.03.052 ...

Müller, Matthias; Choudhury, Soumyadip; Gruber, Katharina; Cruz, Valene B.; Fuchsbichler, Bernd; Jacob, Timo; Koller, Stefan; Stamm, Manfred; Ionov, Leonid; Beckhoff, Burkhard
Sulfur X-ray absorption fine structure in porous Li-S cathode films measured under argon atmospheric conditions
in Spectrochimica Acta Part B: Atomic Spectroscopy vol. 94-95 (2014) . - pp. 22-26
doi:10.1016/j.sab.2014.03.001 ...

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