Insights into the ionic diffusion of three-components solid electrolytes based on polyvinylidene fluoride, Metal-organic frameworks and ioni
Solid Polymer electrolytes (SPEs) are currently a hot topic on the energy storage subject. After detailed investigations we have chosen Polyvinylidene fluoride (PVDF) as polymeric matrix for our SPEs composites. The incorporation of ionic liquids (IL) and Metal-organic frameworks (MOFs) into the SPEs had shown a great improvement on the composite properties. Interestingly, the ternary system (PVDF/MOF/IL) revealed surprisingly good results comparing to the simpler system of PVDF/IL only. We assume that the MOF¿s cavities allow a higher IL loading into the composite, and improves also the anion capture that consequently eases the pathway to cation, improving the SPEs performance. Physic-chemical (including SANS characterization) and then battery charge/discharge cycling tests have been applied to validate this assumption. Nevertheless, we could not conclude which mechanism is taking place and contributing to this performance improvement. Thus, with QENS technique is aimed to understand the influence of each component on the polymer dynamic behaviour of the complex ternary system, important contribution on the ionic mobility throughout the membrane.
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MACEDO Vera; APPEL Markus; María Calles García; PETRENKO Viktor and SHIBAEV Andrey. (2024). Insights into the ionic diffusion of three-components solid electrolytes based on polyvinylidene fluoride, Metal-organic frameworks and ioni. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-07-134
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