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

Satturappa Ravisekaran Srither; Nattanmai Raman Dhineshbabu

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

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Author(s): Satturappa Ravisekaran Srither¹ and Nattanmai Raman Dhineshbabu²
- Affiliations: 1: Department of Physics , South University of Science and Technology , Shenzhen , People's Republic of China ;
  2: Department of Materials Engineering , Indian Institute of Science , Bangalore , India
Source: Volume 14, Issue 5, 01 May 2019, p. 475 – 478
DOI: 10.1049/mnl.2018.5646 , Online ISSN 1750-0443

Received 23/10/2018, Accepted 03/01/2019, Revised 11/12/2018, Published 01/05/2019

In this study, ilmenite [iron titanate (FeTiO₃)] perovskite nanoparticles were synthesised by wet chemical method and sintered at two temperatures, namely 350°C (FT350) and 500°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°C delivers high specific capacitance (42 F g⁻¹), which is significantly greater as compared to that of 350°C sample. Moreover, the results of the EIS study show that 500°C delivers better capacitance than 350°C. The FeTiO₃ samples sintered at 350 and 500°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°C was found to be 70% higher when compared to 350°C. Thus, the proposed results show that the electrochemical behaviour of the sintered sample 500°C is superior to that of 350°C.

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

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