The effect of composition on the dielectric properties of alkali activated materials: A next generation dielectric ceramic

Di Mare, Michael et Ouellet-Plamondon, Claudiane. 2022. « The effect of composition on the dielectric properties of alkali activated materials: A next generation dielectric ceramic ». Materials Today Communications, vol. 32.

PDF Ouellet-Plamondon-C-2022-25096.pdf - Accepted Version Restricted access to Repository staff only until 23 July 2024. Use licence: All rights reserved to copyright holder. Download (2MB)

Abstract

Alkali activated materials have been modified to achieve dielectric constants over 109: the highest dielectric constants ever reported for a ceramic-like material. This is a one-million-fold improvement over barium titanate and strontium titanate dielectric ceramics. It is four orders of magnitude greater than calcium copper titanate: the highest performing dielectric ceramic. Alkali activated materials are a sustainable ceramic-like material, synthesized from byproduct fly ash without the need for calcination or sintering. This exceptional dielectric constant has not been previously reported due to the strong dependence on the elemental composition and activator type. A multivariable compositional optimization was conducted with broadband dielectric spectroscopy to maximize the dielectric performance. With this alkali activated material, the next generation of ceramic capacitors will dramatically improve in affordability, sustainability, and energy storage capacity.

Item Type:	Peer reviewed article published in a journal
Professor:	Professor Ouellet-Plamondon, Claudiane
Affiliation:	Génie de la construction
Date Deposited:	24 Aug 2022 18:35
Last Modified:	14 Nov 2022 20:48
URI:	https://espace2.etsmtl.ca/id/eprint/25096

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