Sol-gel synthesis and leaching of potassium hollandites

Sol-gel synthesis and leaching of potassium hollandites The results of a physicochemical study of hollandite-type minerals synthesized by the citrate-nitrate sol-gel method in the K2O-M2O3-TiO2 systems (M = Ga, Fe, Cr) and subjected to leaching in a mixture of hydrogen peroxide and sulfuric acid are reported. The materials thus prepared are stable up to 400°C and decompose above this temperature. The experiments performed confirm a decrease in the potassium content of these triple oxides upon such chemical treatment by 26–36% of the initial level, which makes these oxides promising for use as electrode materials for lithium-ion batteries. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals
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Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427215020020
Publisher site
See Article on Publisher Site

Abstract

The results of a physicochemical study of hollandite-type minerals synthesized by the citrate-nitrate sol-gel method in the K2O-M2O3-TiO2 systems (M = Ga, Fe, Cr) and subjected to leaching in a mixture of hydrogen peroxide and sulfuric acid are reported. The materials thus prepared are stable up to 400°C and decompose above this temperature. The experiments performed confirm a decrease in the potassium content of these triple oxides upon such chemical treatment by 26–36% of the initial level, which makes these oxides promising for use as electrode materials for lithium-ion batteries.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: May 26, 2015

References

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