I want to use NiCo2O4 as a substrate in 0.5 M H2SO4 solution. Just wondering will it be chemically stable in strong acidic solutions?
No; it is not stable .
Pls. find the reference:
Int. J. Electrochem. Sci., 5 (2010) 556 – 577.
Review
Co3O4 and Co- Based Spinel Oxides Bifunctional Oxygen Electrodes
M. Hamdani , R.N. Singh,*, P. Chartier
[A few relevant lines from this reference are given for your kind perusal].
Among spinel type oxides, cobaltites (Co3O4 and NiCo2O4 spinel oxides), have received great interest, since the seventy of the last century, owing to their use in many industrial applications. These compounds are the most studied ones as oxygen anode and cathode for which promising activity and stability have been demonstrated in alkaline media. IN ACIDIC MEDIA, THESE OXIDE MATERIALS ARE NOT STABLE.
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