Evaluation of polyolefin-based macroporous separators for high temperature Li-ion batteries
| Autor: | Claire Antonelli, Belén Levenfeld, Alejandro Várez, Cynthia S. Martínez-Cisneros, J.-Y. Sanchez |
|---|---|
| Přispěvatelé: | Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Battery (electricity)
Materials science General Chemical Engineering X-ray-diffraction 02 engineering and technology Electrolyte Conductivity 010402 general chemistry 01 natural sciences 7. Clean energy X-ray diffraction (XRD) chemistry.chemical_compound Electrical resistance and conductance Electrochemistry Gel electrolytes Ionic conductivity Li-ion battery [CHIM]Chemical Sciences Composite material Porosity Polymer separator ComputingMilieux_MISCELLANEOUS Polypropylene Chromatography Membranes Macroporous membrane Química 021001 nanoscience & nanotechnology 0104 chemical sciences Polyolefin Poly(vinylidene fluoride) separators chemistry Lithium batteries Polyethylene High temperature battery 0210 nano-technology Polymer electrolytes Liquid electrolyte polypropylene |
| Zdroj: | Electrochimica Acta Electrochimica Acta, Elsevier, 2016, 216, pp.68-78. ⟨10.1016/j.electacta.2016.08.105⟩ e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid instname |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2016.08.105⟩ |
| Popis: | Macroporous separators are critical components in liquid electrolyte batteries. Besides preventing physical contact between electrodes, they enable free ionic transport, electronic isolation and thermal shutdown. Nevertheless, separators also increase electrical resistance and takes up limited space inside the battery, affecting ionic conductivity. Widely used in lithium-ion batteries, commercial polyolefin-based separators operate in a limited temperature range, mainly ranging from -20 degrees C to + 60 degrees C. The purpose of this contribution is to assess the possibility to use these separators in lithium-ion batteries operating at extended temperatures, i.e. between -20 degrees C and 120 degrees C. For this purpose, four commercially available macroporous separators based on polyethylene and polypropylene, were investigated. To determine the effect of temperature on their performance, they were aged for one week at 120 degrees C. Evolution of their morphology and thermomechanical behavior was investigated using XRD, SEM, DSC, TGA and DMA. The thermal aging impact on the ionic conductivity was also investigated using LP30 (R) as reference electrolyte. Thermal aging, i.e. partial clogging of the porosity, was found to have significant effects mainly on mechanical strength, morphology and conductivity. (C) 2016 Elsevier Ltd. All rights reserved. This work has been supported by Projects funded by the regional government (Comunidad de Madrid through MATERYENER3CM S2013/MIT-2753) and the Spanish Government, MICINN (MAT2013-46452-C4-3R).J-Y Sanchez acknowledges the CONEX Programme, funding received from Universidad Carlos III de Madrid, the European Union’s Seventh Framework Programme for research, technological development and demonstration (Grant agreement n 600371), Spanish Ministry of Economy and Competitiveness (COFUND2013- 40258) and Banco Santander. |
| Databáze: | OpenAIRE |
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