| 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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Devaux, Didier
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2024In Situ Hybrid Solid-State Electrolytes for Lithium Battery Applicationscitations
- 2024Effective conductivity of composite polymer/ceramic electrolytes for all-solid-state batteries
- 2024PEO Electrolyte As Interlayer for Li Metal Battery Comprising an Halide Based Hybrid Electrolyte
- 2024Tuning ceramic surface to minimize the ionic resistance at the interface between PEO- and LATP-based ceramic electrolyte
- 2023Insight of ionic transport in solid-state polymer electrolyte for lithium-sulfur batteries
- 2023Hybrid polymer/ceramic membranes: Towards a new concept of electrolytic separator for all-solid-state Lithium metal batteries
- 2023Analysis of Limiting Processes of Power Performance Within Li-ion Batteries
- 2023Evolution of the Ionic Conductivity of Solid Polymer Electrolytes upon Elongation
- 2022Analysis of limiting Processes within Li-ion Batteries
- 2022Study of limiting factors of power performance within Li-ion batteries
- 2022Dense inorganic electrolyte particles as a lever to promote composite electrolyte conductivitycitations
- 2022Electrochemical Impedance Spectroscopy of PEO-LATP Model Multilayers: Ionic Charge Transport and Transfercitations
- 2021Tomography Imaging of Lithium Electrodeposits Using Neutron, Synchrotron X-ray, and Laboratory X-ray sources: A Comparisoncitations
- 2021In Situ Imaging Comparison of Lithium Electrodeposits By Neutron and X-Ray (Synchrotron and Laboratory) Tomographycitations
- 2020Effect of Electrode and Electrolyte Thicknesses on All-Solid-State Battery Performance Analyzed With the Sand Equationcitations
- 2020Fast Determination of the Limiting Ionic Diffusion Coefficient in Lithium Metal Polymer Batteries
- 2020X-Ray Microtomography Analysis of Li-Sulfur Batteries with a Block Copolymer Electrolyte
- 2020Quantification of the Local Topological Variations of Stripped and Plated Lithium Metal by X-ray Tomographycitations
- 2018Comparison of single-ion-conductor block-copolymer electrolytes with Polystyrene- TFSI and Polymethacrylate- TFSI structural blockscitations
- 2016Relationship between Conductivity, Ion Diffusion, and Transference Number in Perfluoropolyether Electrolytescitations
- 2016Structure and Ionic Conductivity of Polystyrene- block -poly(ethylene oxide) Electrolytes in the High Salt Concentration Limitcitations
- 2016Compliant glass–polymer hybrid single ion-conducting electrolytes for lithium batteriescitations
- 2015Failure Mode of Lithium Metal Batteries with a Block Copolymer Electrolyte Analyzed by X-Ray Microtomographycitations
- 2015Phase Behavior and Electrochemical Characterization of Blends of Perfluoropolyether, Poly(ethylene glycol), and a Lithium Saltcitations
- 2012Mechanism of ion transport in PEO/LiTFSI complexes: Effect of temperature, molecular weight and end groupscitations
Places of action
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document
X-Ray Microtomography Analysis of Li-Sulfur Batteries with a Block Copolymer Electrolyte
Abstract
Li-ion batteries are the dominant solution for many applications, from small electronic devices up to hybrid and fully electric vehicles.[1] However, this technology is now mature and new chemistries are needed to reach high specific energy while ensuring safety. Despite a relatively low operating voltage, sulfur (S8) is an attractive cathode active material due to its high theoretical specific capacity; a factor of six higher than traditional LiCoO2 cathodes.[2] To realize high energy density systems, the S8 cathode must be paired with a Li metal anode. Many challenges remain to be addressed to effectively couple a Li metal with a S8 cathode such as the low S8 utilization, the strong volume change of active material upon cycling, the insulating nature of S8 and of the final product Li2S, the solubility of polysulfides in the electrolyte.[3] This issues lead to poor capacity retention, limited cycle life, and low Coulombic efficiency. To address the polysulfide dissolution problem one approach consists in confining S8 within mesoporous and nanoporous carbon.[4] However, conventional liquid electrolytes are not stable against Li metal. A solution is then to use a solid polymer electrolytes, such as polystyrene-b-poly(ethylene oxide) (SEO) block copolymer doped with LiTFSI salt, known to stabilize Li metal.[5]The goal of this study is to understand the behavior of Li-S8 batteries comprising a SEO electrolyte. The cathode is a composite made of carbon, SEO electrolyte and sulfur-impregnated carbon nanospheres.[6] The cells were cycled and exhibited significant capacity fade. We thus used hard X-ray microtomography to determine the reason for this capacity fade. Figure 1 represents tomography images prior and after cycling. In addition to polysulfide dissolution, our observations indicate that the battery failure in our system is also due to strong changes at the Li/SEO interface.References[1] J. B. Goodenough, K.-S. Park, J. Am. Chem. Soc., 135 (2013) 1167 (2013). [2] P. G. Bruce, S. A. Freunberger, L. J. Hardwick, J.-M. Tarascon, Nat. Mater., 11 (2012) 19. [3] S. S. Zhang, J. Power Sources, 231, 153 (2013). [4] X. Fan, W. Sun, F. Meng, A. Xing, J. Liu, Green Energy Environ., 3 (2018) 2. [5] D. T. Hallinan, S. A. Mullin, G. M. Stone, and N. P. Balsara, J. Electrochem. Soc., 160, (2013) A464. [6] D. Devaux, I. Villaluenga, X. Jiang, Y. H. Chang, D. Y. Parkinson, N. P. Balsara, J. Electrochem. Soc., 167 (2020) 060506