Ultrafine β-FeOOH: the Influence of Synthesis Conditions on the Morphological, Magnetic and Electrochemical Properties

Authors L.V. Mokhnatska1, V.O. Kotsyubynsky1 , A.B. Hrubiak2 , S.V. Fedorchenko1, S.І. Vorobiov3

1Vasyl Stefanyk Precarpathian National University, 57, Shevchenko Str., 76025 Ivano-Frankivsk, Ukraine

2Institute of Metal Physics, National Academy of Science, 36, Aсad. Vernadsky Str., 03680 Kyiv, Ukraine

3Sumy State University, 2, Rymskyi-Korsakov Str., 40007 Sumy, Ukraine

Issue Volume 10, Year 2018, Number 3
Dates Received 25 October 2017; published online 25 June 2018
Citation L.V. Mokhnatska, V.O. Kotsyubynsky, A.B. Hrubiak, et al., J. Nano- Electron. Phys. 10 No 3, 03029 (2018)
DOI https://doi.org/10.21272/jnep.10(3).03029
PACS Number(s) 68.37.Lp, 61.05.C, 82.45.Yz
Keywords Iron oxy-hydroxide, β-FeOOH, Crystal and magnetic structure, Morphology (8) , CVA.

Ultrafine sol-gel synthesized iron oxy-hydroxides β-FeOOH was investigated by XRD, TEM, Mossbauer and impedance spectroscopies and low temperature nitrogen adsorption. The influence of precursor molar concentration on the material morphology, crystalline and magnetic microstructures was studied. The model of initial precursors (FeCl3·6H2O) molarity influence on the mesoporous β-FeOOH formation is proposed. The electrochemistry performance of obtained materials in aqueous electrolyte (1 M Li2SO4) was tested and lithium ions diffusion coefficients were calculated. The work is aimed to identify the optimal conditions for obtaining the perspective electrode material for supercapacitors.

List of References