| 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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article
Mechanism of ion transport in PEO/LiTFSI complexes: Effect of temperature, molecular weight and end groups
Abstract
The conductivity and viscosity of PEO/LiTFSI complexes are determined as a function of temperature, molecular weight (Mn) and the end group nature in view of the design of future polymer electrolytes. The results show the crucial role of the end groups on the dynamics of polymers at low Mn. A new method is proposed to estimate the glass transition temperature variation as function of Mn and end groups using conductivity data. The conductivity and viscosity plotted at constant friction factor follow a master curve which suggests that the main impact of end groups is to modify the available free volume which governs in turn the segmental dynamics. The anion and cation conductivities are separated using the cationic transport number obtained by pfg-NMR. Finally, an empirical equation based on Rouse dynamics taking into account the effect of the end groups is proposed. It reproduces with a good degree of accuracy the conductivities over the whole temperature and Mn ranges. In agreement with molecular dynamic simulations, at high Mn the limiting step is the jump of the lithium ion from one coordination site to another and is not influenced by the dynamics of the PEO chain reptation, whereas at low Mn the transport is mainly ensured by a vehicular mechanism.