Sodium nickel titanate (Na2/3Ni1/3Ti2/3O2), a potential electrode system with low ohmic loss: Insights using opto-impedance probe
By Singh, Ashutosh Kumar; Monika, R.; Manoharan, S. P.; Kennedy, J.; Jagannathan, R.
Published in Materials Chemistry and Physics
2019
Abstract
In the present work, with the goal of finding a viable alternative to Li-ion based electrode system, sodium nickel titanate system (NNT) has been synthesized and its impedance characteristics compared in relation to the established LNMC (LiNi1/3Mn1/3Co1/3O2) electrode system using opto-impedance technique. Thus, obtained opto-impedance results suggest a clear dominant electronic character in the form of charge build-up leading to high capacitance for the former. Also, the significant drop in ohmic resistance observed for the NNT system upon UV irradiation, at elevated temperature (at 55
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