New Nanostructured Electrode Material for Electrochemical Supercapacitors

Freeze drying product of the coprecipitated Ni-Mn hydroxides is comprised of the platelike 10 nm thick particles demonstrating considerable electrochemical activity in the aqueous solutions (specific capacitance 140-150 Fg^-1). Formation of the complex oxides during thermal processing of freeze dried hydroxides is accompanied by the nonmonotonic decrease of capacitance in the lack of morphological evolution.