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- Title
Cobalt Additives Influence on Phase Composition and Defect Structure of Manganese Dioxide Prepared from Fluorine Containing Electrolytes.
- Authors
Sokolsky, G. V.; Ivanov, S. V.; Ivanova, N. D.; Boldurev, Ye. I.; Kobulinskaya, O. V.; Demchenko, M. V.
- Abstract
Manganese dioxide samples were prepared from fluorine containing electrolytes with additives of Co2+ ions. Atomic absorption spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis were the methods of the samples characterisation. Manganese dioxide at the presence of cobalt forms nanosized ramsdellite structure crystallites of mostly needle-like morphology with significant content of hydroxide groups. The main phase state in manganese dioxide samples obtained at the presence of cobalt is γ-MnO2 with ramsdellite structure and low content of intergrowth defects. The sample doped both with lithium and cobalt can be indexed to a hollandite-type structure (tetragonal; space group I4=m) of α-MnO2.
- Subjects
MANGANESE; ATOMIC absorption spectroscopy; FLUORINE; ELECTROLYTES; THERMOGRAVIMETRY; X-ray diffraction; SCANNING electron microscopy; LITHIUM; COBALT
- Publication
Acta Physica Polonica: A, 2010, Vol 117, Issue 1, p86
- ISSN
0587-4246
- Publication type
Article
- DOI
10.12693/APhysPolA.117.86