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Nanostructured layered hydroxides for sustainable energy applications

Jeudi 12 mars 2020 à 15:00
Salle de séminaire C5-421-A du CEA-Grenoble
Publié le 12 mars 2020

​Par Matias Jobbagy
Instituto de Quimica, Fisica de los Materiales, Medioambiente y Energia - Consejo National de Investigaciones Cientificas y Técnicas - Argentina

Nowadays, much attention is focused on electrochemical-based platforms for energy storage as conversion as supercapacitors and water splitting cells. These platforms require the design and preparation of efficient heterogeneous electrocatalysts in terms of cost and performance. Among the most promising materials, crystalline transition metal layered hydroxides, bearing a well-defined chemical and structural nature, play a key role.
Along this seminar we will discuss how mild chemical strategies as the homogeneous alkalinisation (epoxide route) allow the design and preparation of the electrocatalysts of the future, under controlled crystallization scenarios. In addition, fundamental concepts and strategies of nanoscience and nanotechnology help us to texturize and organize these materials in a more rational fashion. Beyond these general aspects, the current achievements will be illustrated with the behaviour of Ni-Co binary hydroxides and a comprehensive characterization employing PXRD, XAS, UV-Vis spectroscopy and DFT+U simulations.

• Oestreicher et al. Mild homogeneous synthesis of gold nanoparticles through the epoxide route: kinetics, mechanisms and related one-pot composites. Chemistry-A European Journal, In press.
• Microparticles with hetero-nanointerfaces: controlled assembly of cobalt hydroxide and nickel hydroxide nanoclusters towards improved electrochemical functions. Journal of Materials Chemistry A, 2019, 7: 25290-25296
• Oestreicher V and Jobbágy M. On demand one-pot mild preparation of LDHs and their hybrid forms: advances through the epoxide route. Chemistry-A European Journal, 2019, 25(54): 12611-12619

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