Synthesis and Study of Oxide
and PhosphorSilicate Nanocomposites for the Creation
of New-Generation Supercapacitors

L. V. Morozova, T. I. Panova, V. P. Popov, I. N. Tsvetkova, and O. A. Shilova

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences,
nab. Makarova 2, St. Petersburg, 199034 Russia

e-mail: morozova_l_v@mail.ru

Received February 25, 2011

Abstract—Using the methods of joint precipitation of hydroxides and joint crystallization of nitrate solutions,
nanocrystalline ceramics have been synthesized on the basis of lanthanum and neodymium chromites and the
two-phase composition (ZrO₂)_0.6(In₂O₃)_0.4 with average grain sizes of 80–90 and 50–60 nm, respectively.
Nanoceramics possess electrical conductivity from 10^–2 to 10S cm^–1 in the temperature range 20–800C. Ion-
conducting membranes compatible with the obtained electrode ceramics have been synthesized by the sol–gel
method from silica gels doped with orthophosphoric acid.

Keywords: lanthanum and neodymium chromites, zirconium and indium oxides, nanoceramics, ceramic elec-
trodes, phosphor–silicate silica, ion-conducting membrane

DOI: 10.1134/S1087659612030121

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