INMA Coloquio: "Processing, atom-by-atom characterisation and applications of two-dimensional nanosheet inks".- Jueves 10 de junio

Última modificación: 03/06/2021 - 13:19

Jueves, Junio 10, 2021

El próximo jueves 10 de junio tendrá lugar una nueva sesión del ciclo de seminarios INMA Coloquio. Esta iniciativa, organizada por el Instituto de Nanociencia y Materiales de Aragón, INMA (CSIC-Universidad de Zaragoza), tiene como objetivo acercar al personal investigador de Aragón a referentes de primer nivel internacional en temáticas diversas y muy actuales de interés científico, como por su esperado impacto en nuestro futuro como sociedad.

La sesión correrá a cargo de Valeria Nicolisi, profesora del Trinity College de Dublin.

La conferencia titulada Processing, atom-by-atom characterisation and applications of two-dimensional nanosheet inks, tendrá lugar el próximo jueves 10 de junio a las 12 horas. La sesión se podrá seguir a través de la plataforma zoom (imprescindible inscripción): https://us02web.zoom.us/webinar/register/WN_KUB-i2TlSz6D1qdAAEUkDw o a través del canal YouTube del INMA:

 https://www.youtube.com/channel/UCEEolwQroau-y9pRAUbPXpg

Resumen de la charla:  

Liquid phase exfoliation has been proved to be a cheap, scalable method for the mass production of 2D sheets. This talk will first discuss the galaxy of existent layered materials, with emphasis on synthesis, liquid-phase exfoliation, and characterization, focussing on some key applications recently developed in our laboratories, ranging from energy storage to printed electronics. We will for example discuss how two-dimensional Ti3C2 (MXene) can be formulated in aqueous and organic viscous inks for extrusion printing and inkjet printing, respectively, and demonstrate direct MXene printing on various substrates. The additive- and binary solvent-free MXene inks do not show coffee ring effect, enabling high-resolution printing without substrate pre-treatment. The resulting all-MXene printed micro-supercapacitors showcase excellent charge storage performance, including areal capacitance up to 43 mF/cm2 and volumetric capacitance up to 562 F/cm3 in protic gel electrolyte, coupled with long lifetime and good flexibility. We also show examples of all-inkjet-printed MXene arrays for ohmic resistors. The versatile direct-ink-printing technique highlights the promise of MXene functional inks for scalable fabrication of easy-to-integrate components of printable electronics. We will also discuss how MXenes can be used as a conductive binder for silicon electrodes produced by a simple and scalable slurry-casting technique without the need of any other additives. The nanosheets form a continuous metallic network, enable fast charge transport and provide good mechanical reinforcement for the thick electrode (up to 450µm). Consequently, record high areal capacity anodes (up to 23.3mAh cm−2) can be demonstrated.

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