alexa Rational Design Of Organic Electrode Materials: New Advances And Tools
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

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9th World Congress on Materials Science and Engineering
June 12-14, 2017 Rome, Italy

Christine Frayret, Daniele Tomerini, Julie Bonnard, Carlo Gatti and Yann Danten
Université de Picardie Jules Verne, France
Université de Bordeaux 1, France
ScientificTracks Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022-C1-067
The demand for sustainable energy sources has stimulated great interest in new technologies and materials. A multitude of research efforts in recent years have led to marked progress in this area, including in particular lithium-ion batteries based on organic electrodes. A significant milestone in designing such materials would correspond to the comprehension of the rules governing the increase/decrease of the redox potential of molecular entities, especially if differentiation between various backbones/functional groups/redox centers or incidence of atom substitution within rings can be reached. Based on the combined use of molecular quantum simulation and accurate examination of the electronic structure properties, a rational design of organic electrode materials can be performed. In addition to spin density populations’ estimation, different additional tools can be used to understand molecular redox potential trends. For instance, NICS (nuclear independent chemical shift), HOMA (harmonic oscillator model of aromaticity), δFLU indicators, etc., have the opportunity to electron delocalization on various rings/bond paths within a molecule in a quantitative way. In this context, the partitioning of the global energy of the molecule may constitute another analysis instrument to shed light on the various pieces of molecule playing the main role in stabilization/destabilization upon reduction or how balance between some competitive effects does occur. Such approach can be applied to systematic theoretical screening of existing compounds/hypothetical novel candidates, both being tuned through various effects. This should progressively complete the database for the discovery of new/ optimized organic electrodes with improved features. Thanks to this methodology a work of prospection has been undertaken on various families, including derivatives of quinone, carboxylate, quinoneazine and pentalenedione. By focusing on these various sets of compounds, we identified some property-based guidelines, which may serve not only for the ranking of the studied entities but also for the search of more advanced systems.

Christine Frayret is an Associate Professor and has done her PhD degree from the University of Bordeaux 1, Institute of the Chemistry of Condensed Matter from Bordeaux (ICMCB, CNRS UPR 9048) France. She was mainly involved in the area of solid electrolytes/electrodes for fuel cells and luminescence of materials. She then joined the Laboratory of Reactivity and Chemistry of Solids at University of Picardie Jules Verne (LRCS, CNRS UMR 7314, Amiens, France), where she started to focus on battery materials. Her most recent work addresses determination of structure-property relationships, identification of guidelines for the design of energy related materials, especially for the potential next generation storage devices involving novel more eco-friendly organic electrodes and investigations on photochromic materials.


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