Effects of electrolyte doping on electrodeposited nanostructured manganese oxide and chromium oxide

G. V. Sokolsky; Ye I. Boldyrev; N. D. Ivanova; S. V. Ivanov; G. Ya Kolbasov; G. Lazzara; L. V. Zudina; N. V. Gayuk; S. V. Chivikov

doi:10.1016/j.surfcoat.2020.126211

Effects of electrolyte doping on electrodeposited nanostructured manganese oxide and chromium oxide

G. V. Sokolsky^*
, Ye I. Boldyrev
, N. D. Ivanova
, S. V. Ivanov
, G. Ya Kolbasov
, G. Lazzara
, L. V. Zudina
, N. V. Gayuk
, S. V. Chivikov

^*Corresponding author for this work

National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
National Aviation University
NASU - Vernadsky Institute General and Inorganic Chemistry
National Academy of Government Managerial Staff of Culture and Arts
University of Palermo

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Electrolyte additions are used to control the functionality of a nanostructured oxide. Dopant ions affect the size and shape of deposit crystallites and modify the host structure. Such ions can be incorporated into the deposit or form a separate oxide phase. The manganese dioxide family of polymorphs with ion-molecular sieve properties represents the additional possibilities of “template” effects of dopant ions on the phase composition, heterovalent substitution in the cationic sublattice, changes in morphology and alteration of nanocrystallite size during electrocrystallisation. The effects of electrolyte doping in electrodeposited, non-stoichiometric manganese dioxide (NH₄⁺, Li⁺ and Co²⁺), chromium oxide-based films (Co²⁺, Li⁺) were investigated. The structural characteristics and morphology were studied for all the obtained nanocomposites and deposits were evaluated as highly crystalline cathode materials cathodes, having high cyclability, in Li batteries. The improved functionality of the electrodeposited nanomaterials was correlated to structural changes. Hollandite and pyrolusite electrodeposition pathways were proposed, based on symmetry principles of phase transitions.

Original language	English
Article number	126211
Journal	Surface and Coatings Technology
Volume	400
DOIs	https://doi.org/10.1016/j.surfcoat.2020.126211
State	Published - 25 Oct 2020
Externally published	Yes

Keywords

Chromium oxide-hydroxide thin film
Electrode materials
Electrodeposition
Electrolyte doping
Li battery
Manganese dioxide

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10.1016/j.surfcoat.2020.126211

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@article{c992346b12504aad8dd961bd11c5fb7c,

title = "Effects of electrolyte doping on electrodeposited nanostructured manganese oxide and chromium oxide",

abstract = "Electrolyte additions are used to control the functionality of a nanostructured oxide. Dopant ions affect the size and shape of deposit crystallites and modify the host structure. Such ions can be incorporated into the deposit or form a separate oxide phase. The manganese dioxide family of polymorphs with ion-molecular sieve properties represents the additional possibilities of “template” effects of dopant ions on the phase composition, heterovalent substitution in the cationic sublattice, changes in morphology and alteration of nanocrystallite size during electrocrystallisation. The effects of electrolyte doping in electrodeposited, non-stoichiometric manganese dioxide (NH4+, Li+ and Co2+), chromium oxide-based films (Co2+, Li+) were investigated. The structural characteristics and morphology were studied for all the obtained nanocomposites and deposits were evaluated as highly crystalline cathode materials cathodes, having high cyclability, in Li batteries. The improved functionality of the electrodeposited nanomaterials was correlated to structural changes. Hollandite and pyrolusite electrodeposition pathways were proposed, based on symmetry principles of phase transitions.",

keywords = "Chromium oxide-hydroxide thin film, Electrode materials, Electrodeposition, Electrolyte doping, Li battery, Manganese dioxide",

author = "Sokolsky, \{G. V.\} and Boldyrev, \{Ye I.\} and Ivanova, \{N. D.\} and Ivanov, \{S. V.\} and Kolbasov, \{G. Ya\} and G. Lazzara and Zudina, \{L. V.\} and Gayuk, \{N. V.\} and Chivikov, \{S. V.\}",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = oct,

day = "25",

doi = "10.1016/j.surfcoat.2020.126211",

language = "英语",

volume = "400",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

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T1 - Effects of electrolyte doping on electrodeposited nanostructured manganese oxide and chromium oxide

AU - Sokolsky, G. V.

AU - Boldyrev, Ye I.

AU - Ivanova, N. D.

AU - Ivanov, S. V.

AU - Kolbasov, G. Ya

AU - Lazzara, G.

AU - Zudina, L. V.

AU - Gayuk, N. V.

AU - Chivikov, S. V.

PY - 2020/10/25

Y1 - 2020/10/25

N2 - Electrolyte additions are used to control the functionality of a nanostructured oxide. Dopant ions affect the size and shape of deposit crystallites and modify the host structure. Such ions can be incorporated into the deposit or form a separate oxide phase. The manganese dioxide family of polymorphs with ion-molecular sieve properties represents the additional possibilities of “template” effects of dopant ions on the phase composition, heterovalent substitution in the cationic sublattice, changes in morphology and alteration of nanocrystallite size during electrocrystallisation. The effects of electrolyte doping in electrodeposited, non-stoichiometric manganese dioxide (NH4+, Li+ and Co2+), chromium oxide-based films (Co2+, Li+) were investigated. The structural characteristics and morphology were studied for all the obtained nanocomposites and deposits were evaluated as highly crystalline cathode materials cathodes, having high cyclability, in Li batteries. The improved functionality of the electrodeposited nanomaterials was correlated to structural changes. Hollandite and pyrolusite electrodeposition pathways were proposed, based on symmetry principles of phase transitions.

AB - Electrolyte additions are used to control the functionality of a nanostructured oxide. Dopant ions affect the size and shape of deposit crystallites and modify the host structure. Such ions can be incorporated into the deposit or form a separate oxide phase. The manganese dioxide family of polymorphs with ion-molecular sieve properties represents the additional possibilities of “template” effects of dopant ions on the phase composition, heterovalent substitution in the cationic sublattice, changes in morphology and alteration of nanocrystallite size during electrocrystallisation. The effects of electrolyte doping in electrodeposited, non-stoichiometric manganese dioxide (NH4+, Li+ and Co2+), chromium oxide-based films (Co2+, Li+) were investigated. The structural characteristics and morphology were studied for all the obtained nanocomposites and deposits were evaluated as highly crystalline cathode materials cathodes, having high cyclability, in Li batteries. The improved functionality of the electrodeposited nanomaterials was correlated to structural changes. Hollandite and pyrolusite electrodeposition pathways were proposed, based on symmetry principles of phase transitions.

KW - Chromium oxide-hydroxide thin film

KW - Electrode materials

KW - Electrodeposition

KW - Electrolyte doping

KW - Li battery

KW - Manganese dioxide

UR - https://www.scopus.com/pages/publications/85089353633

U2 - 10.1016/j.surfcoat.2020.126211

DO - 10.1016/j.surfcoat.2020.126211

M3 - 文章

AN - SCOPUS:85089353633

SN - 0257-8972

VL - 400

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

M1 - 126211

ER -

Effects of electrolyte doping on electrodeposited nanostructured manganese oxide and chromium oxide

Abstract

Keywords

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