Surface properties enhancement of battery separator by micro-plasma treatments
| Autor: | Jean-Paul Rusiecki, Olivier Motret, David Violleau, Bénédicte Claude-Montigny, Eliott Rogez |
|---|---|
| Přispěvatelé: | GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) (GREMAN - UMR 7347), Université de Tours-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Physico-chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E), Université de Tours, Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Tours (UT) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Physics and Astronomy Battery 02 engineering and technology 01 natural sciences Contact angle chemistry.chemical_compound 0103 physical sciences Surface properties Composite material Separator (electricity) 010302 applied physics chemistry.chemical_classification Microplasma [SPI.PLASMA]Engineering Sciences [physics]/Plasmas Plasma Polymer [CHIM.MATE]Chemical Sciences/Material chemistry Polyethylene Micro-plasma treatments 021001 nanoscience & nanotechnology Separator chemistry Wetting Microreactor 0210 nano-technology |
| Zdroj: | Journal of Applied Physics Journal of Applied Physics, American Institute of Physics, 2019, 125 (21), pp.213301. ⟨10.1063/1.5094970⟩ |
| ISSN: | 0021-8979 1089-7550 |
| Popis: | International audience; The aim of this work is to test the wettability enhancement of a low-wetting and low-cost commercial polymer separator by cold microplasma treatments. Liquid and gas ammonia are tested as precursors in a pulsed microreactor at low pressure. Two modes of plasma producing are used, i.e., with and without bias. Optical emission spectroscopy, contact angle technique, and cycling tests are performed to characterize the process and the separator. Best results are obtained with liquid ammonia precursor without bias (contact angle between water and a polyethylene separator being 10° ± 2° compared to 111° ± 2° without any treatment). Cycling tests of lithium half-cells incorporating plasma-treated separator show drastic improvements to capacity retention at high rates (after 100 cycles at a 2C rate, the discharge capacity of a Li4Ti5O12 is almost three times higher, i.e., 38 mA h g−1 and 113 mA h g−1 with an untreated separator and a treated one, respectively). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|