ORALS

SESSION: AdvancedMaterialsTuePM2-R6	4th Intl. Symp. on New and Advanced Materials and Technologies for Energy, Environment and Sustainable Development
Tue Nov, 6 2018 / Room: Guaratiba (60/2nd)
Session Chairs: Ephraim Eliav; Raphael Semiat; Session Monitor: TBA

15:55: [AdvancedMaterialsTuePM209] Keynote
Fluoride Materials for Advanced Technologies, Energy, and Sustainable Issues
Alain Tressaud¹ ; ¹ICMCB-CNRS, University Bordeaux, Pessac, France;
Paper Id: 357 [Abstract]

Inorganic fluorine-based compounds are present today as components in many advanced technologies, in particular energy storage and conversion, such as Li-ion batteries, F- ion-based all-solid-state batteries, and fuel cells [1]. Other than these types of applications, fluoride materials are also decisive elements in microphotonics, fluorescent chemical sensors, solid-state lasers, nonlinear optics, etc. Most of these outstanding properties can be correlated to the exceptional electronic properties of the element "Fluorine" [2]. The strategic importance of inorganic fluoride materials will be illustrated by some examples: - In energy storage and conversion fields, fluorinated carbon nano-particles (F-CNPs) are tested as electrodes active materials in primary lithium batteries. In secondary Li batteries, 3d-transition metal fluorides and oxyfluorides are proposed as electrodes. - Among the huge variety of solid-state d-transition metals fluorides derived from the perovskite, layered BaMF₄ and iron fluorides (TTB- K₃Fe₅F₁₅), are noticeable multiferroics, in which magnetism and ferroelectricity coexist. - Finally, functionalization processes and surface modifications using various fluorination treatments yield nanosized materials, high surface area fluorides, switchable hydrophobic/hydrophilic coatings. Concerning environmental issues, new alternatives are proposed to substitute CFCs, HCFCs and HFCs, by molecules much favorable for our troposphere because of their lower GWP. In many areas of the world where the level of fluorine in water is dangerously high, various defluoridation processes improve the quality of drinking water, lowering the risks of fluorosis and bringing most promising development for these populations [3]. <i>Acknowledgements: This presentation was made possible with the support of ARC Corp. (Dr. Dayal Meshri, CEO) </i>

References:
[1] "Progress in Fluorine Science", A. Tressaud Series Editor, Elsevier, USA Vol. 1 - "Photonic & Electronic Properties of Fluoride Materials", A.Tressaud & K. Poeppelmeier Eds. (2016) ; Vol. 2 - "New Forms of Fluorinated Carbons", O. Boltalina & T. Nakajima, Eds. (2016); Vol. 3 - "Modern Synthesis Processes and Reactivity of Fluorinated Compounds", H. Groult, F. Leroux & A. Tressaud, Eds. (2017); Vol. 4 - "Fluorine & Health: Pharmaceuticals, Medicinal Diagnostics, and Agrochemicals", G. Haufe, & F. Leroux Eds. (to appear, 2018).

[2] Fluorine Chemistry, a thematic issue, Chemical Reviews, V. Gouverneur, K. Seppelt, Eds., Chem. Rev. 115 (2015) 563-1306.

[3] "Fluorine and the Environment" Vol.1: F-emissions and atmospheric chemistry. Vol.2: Green Chemistry, Water, Agriculture, and Analytical aspects", Advances in Fluorine Science , A. Tressaud, Series Ed. Elsevier (2006)