Synthesis and characterisation of FeTiO 3 perovskite nanomaterials for electrochemical energy storage application

Micro & nano letters

article

Satturappa Ravisekaran Srither¹  Nattanmai Raman Dhineshbabu² 

[1] Department of Physics, South University of Science and Technology;Department of Materials Engineering, Indian Institute of Science

关键词: 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;   

DOI  :  10.1049/mnl.2018.5646

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

In this study, ilmenite [iron titanate (FeTiO 3 )] 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 FeTiO 3 samples sintered at 350 and 500°C used as cathodes in a novel Mg/FeTiO 3 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 FeTiO 3 is suitable for using it as a cathode material in Mg/FeTiO 3 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.

【 授权许可】

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