10.5281/zenodo.3715392
https://zenodo.org/records/3715392
oai:zenodo.org:3715392
Bakavets Aliaksei
Bakavets Aliaksei
Research Institute for Physical Chemical Problems, Belarusian State University
Aniskevich Yauhen
Aniskevich Yauhen
Research Institute for Physical Chemical Problems, Belarusian State University
Yakimenko Oleg
Yakimenko Oleg
Belarusian State University
Jo Hyeon Jae
Jo Hyeon Jae
Sejong University
Vernickaite Edita
Vernickaite Edita
Vilnius University
Tsyntsaru Natalia
Tsyntsaru Natalia
0000-0002-9813-2460
Vilnius University
Cesiulis Henrikas
Cesiulis Henrikas
0000-0002-5077-7884
Vilnius University
Kuo Liang-Yin
Kuo Liang-Yin
Institut für Chemie und Biochemie, Freie Universität Berlin/Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research
Kaghazchi Payam
Kaghazchi Payam
Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research
Ragoisha Genady
Ragoisha Genady
Research Institute for Physical Chemical Problems, Belarusian State University
Myung Seung-Taek
Myung Seung-Taek
Sejong University
Streltsov Eugene
Streltsov Eugene
Belarusian State University
Pulse electrodeposited bismuth-tellurium superlattices with controllable bismuth content
Zenodo
2020
Bismuth telluride; bismuth; superlattice; thermoelectric materials; electrodeposition
2020-03-18
10.5281/zenodo.3715391
https://zenodo.org/communities/eu
License Not Specified
Superlattice structures of (Bi2)m(Bi2Te3)n series with controllable Bi mole fraction from 0.41 to
0.71 are electrodeposited in pulse potentiostatic mode from acidic electrolytes containing Bi(NO3)3 and
TeO2 as precursors. Two valence states of bismuth in superlattices are identified by X-ray photoelectron
spectroscopy (XPS). One of those states is attributed to interlayered Bi0 which is present in
(Bi2)m(Bi2Te3)n superlattice in the form of biatomic layers between bismuth telluride quintuples. X-ray
difraction (XRD) analysis and density functional theory (DFT) calculations indicate an increase in subcell
parameter asub and decrease in subcell parameter csub with the increase of Bi mole fraction. Biatomic
layers of Bi0 are identified with cyclic voltammetry by characteristic anodic peak between potentials of
metallic bismuth and Bi2Te3 oxidation. The selective oxidation of Bi-bilayers in (Bi2)m(Bi2Te3)n
superlattice at the potential of the anodic peak results in the product corresponding to Bi2Te3 by
stoichiometry, but having an expanded crystal structure. Superlattices with controllable Bi mole fraction
and Bi2Te3 with "memory effect" may be of interest for design of new thermoelectric materials with
controllable parameters
This is a post-peer-review, pre-copyedit version of an article published in Journal of Power Sources. The final authenticated version is available online at: https://doi.org/10.1016/j.jpowsour.2019.227605
European Commission
10.13039/501100000780
778357
Multiscaled Smart Metallic and Semiconductor Electrodes for Electrochemical Processing and Devices