Synthesis and Characterization of Na2Ti6O13 and Na2Ti6O13/Na2Ti3O7 Sodium Titanates with Nanorod-like Structure as Negative Electrode Materials for Sodium-ion Batteries

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F17%3APU124815" target="_blank" >RIV/00216305:26220/17:PU124815 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S2352152X17301329?via%3Dihub" target="_blank" >http://www.sciencedirect.com/science/article/pii/S2352152X17301329?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.est.2017.07.008" target="_blank" >10.1016/j.est.2017.07.008</a>

Result language
angličtina
Original language name
Synthesis and Characterization of Na2Ti6O13 and Na2Ti6O13/Na2Ti3O7 Sodium Titanates with Nanorod-like Structure as Negative Electrode Materials for Sodium-ion Batteries
Original language description
In this work, we report microwave assisted hydrothermal synthesis of monoclinic sodium titanates with either tunnel or with mixed tunnel/layered structure. Single phase Na2Ti6O13 and mixed phase Na2Ti6O13/Na2Ti3O7 titanates were studied by electrochemical measurements with cyclic voltammetry, impedance spectroscopy and galvanostatic cycling. SEM images revealed that all the synthesized materials consist of rods with widths in the range of tenths to hundreds nanometers. XRD analysis was used for determination of the phase composition and crystallite size. It was shown that mixed phase electrode material reveals higher capacity and wider active voltage range but has also lower cycling stability. The insertion potential of layered titanate Na2Ti3O7 is much lower than in the case of Na2Ti6O9 and the specific capacity of mixed titanate in the first cycle is double the capacity of pure Na2Ti6O9. Although presence of layered titanate contributed to high specific capacity in early cycling, it allowed a considerable decrease in specific capacity at higher numbers of cycles.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)