Synthesis and characterisation of FeTiO3 perovskite nanomaterials for electrochemical energy storage application

Srither, Satturappa Ravisekaran and Dhineshbabu, Nattanmai Raman (2019) Synthesis and characterisation of FeTiO3 perovskite nanomaterials for electrochemical energy storage application. In: MICRO & NANO LETTERS, 14 (5). pp. 475-478.

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Abstract

In this study, ilmenite iron titanate (FeTiO3)] perovskite nanoparticles were synthesised by wet chemical method and sintered at two temperatures, namely 350 degrees C (FT350) and 500 degrees C (FT500). The phase structure, crystallinity, microstructure, particle size, and purity of the sintered samples were extensively studied. Electrochemical measurements such as cyclic voltammetric studies, electrochemical impedance spectroscopy (EIS), and discharge measurements were carried out. The results of the cyclic voltammetric studies showed that sample prepared at 500 degrees C delivers high specific capacitance (42 F g(-1)), which is significantly greater as compared to that of 350 degrees C sample. Moreover, the results of the EIS study show that 500 degrees C delivers better capacitance than 350 degrees C. The FeTiO3 samples sintered at 350 and 500 degrees C used as cathodes in a novel Mg/FeTiO3 cell delivered a discharge capacity of 129 and 90 mA h g(-1), respectively. According to the study's data, for the first time it has confirmed that FeTiO3 is suitable for using it as a cathode material in Mg/FeTiO3 primary cell. The discharge capacity of 500 degrees C was found to be 70% higher when compared to 350 degrees C. Thus, the proposed results show that the electrochemical behaviour of the sintered sample 500 degrees C is superior to that of 350 degrees C.

Item Type:	Journal Article
Publication:	MICRO & NANO LETTERS
Publisher:	INST ENGINEERING TECHNOLOGY-IET
Additional Information:	Copyright for this article belongs to INST ENGINEERING TECHNOLOGY-IET
Keywords:	electrochemical impedance spectroscopy; sintering; nanofabrication; nanoparticles; electrochemical electrodes; particle size; voltammetry (chemical analysis); capacitance; magnesium; iron compounds; crystal microstructure; primary cells; perovskite nanoparticles; wet chemical method; phase structure; particle size; electrochemical impedance spectroscopy; discharge capacity; electrochemical energy storage; ilmenite; sintering; cyclic voltammetry; specific capacitance; EIS; primary cell; iron titanate; crystallinity; microstructure; cathode material; temperature 350; 0 degC; temperature 500; 0 degC; Mg-FeTiO3
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 Dec 2019 08:17
Last Modified:	20 Dec 2019 08:17
URI:	http://eprints.iisc.ac.in/id/eprint/63244

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