Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Niobium Alloying of Self‐Organized TiO2 Nanotubes as an Anode for Lithium‐Ion Microbatteries

Niobium Alloying of Self‐Organized TiO2 Nanotubes as an Anode for Lithium‐Ion Microbatteries Self‐supported titanium dioxide nanotube is explored as a potential negative electrode for 3D Li‐ion (micro) batteries. Apart from the direct contact of the nanotubes with the substrate, the 1D porous structure effectively facilitates the flow of electrolyte into the bulk, alleviates any volume expansion during cycling, and provides a short lithium‐ion diffusion length. The fabrication of self‐supported Nb rich titanium dioxide nanotubes by electrochemical anodization of Ti–Nb alloys is reported. The structure, morphology, and the composition of the Nb alloyed TiO2 nanotubes are studied using scanning electron microscopy, X‐ray diffraction, and X‐ray photoelectron spectroscopy. The electrochemical behavior of the alloyed and the pristine TiO2 nanotubes is investigated by cyclic voltammetry, chronopotentiometry, and electrochemical impedance spectroscopy. The electrochemical performance of the pristine and the alloyed titania nanotubes reveals that as the niobium concentration increases the capacity increases. The titania nanotubes containing 10 wt% of Nb deliver a higher capacity, with good capacity retention and coulombic efficiency. Electrochemical impedance spectroscopy analysis shows that Nb alloying can decrease the overall cell impedance by reducing the charge transfer resistance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Materials Technologies Wiley

Loading next page...
 
/lp/wiley/niobium-alloying-of-self-organized-tio2-nanotubes-as-an-anode-for-a0XpBsnIkh

References (60)

Publisher
Wiley
Copyright
© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
eISSN
2365-709X
DOI
10.1002/admt.201700274
Publisher site
See Article on Publisher Site

Abstract

Self‐supported titanium dioxide nanotube is explored as a potential negative electrode for 3D Li‐ion (micro) batteries. Apart from the direct contact of the nanotubes with the substrate, the 1D porous structure effectively facilitates the flow of electrolyte into the bulk, alleviates any volume expansion during cycling, and provides a short lithium‐ion diffusion length. The fabrication of self‐supported Nb rich titanium dioxide nanotubes by electrochemical anodization of Ti–Nb alloys is reported. The structure, morphology, and the composition of the Nb alloyed TiO2 nanotubes are studied using scanning electron microscopy, X‐ray diffraction, and X‐ray photoelectron spectroscopy. The electrochemical behavior of the alloyed and the pristine TiO2 nanotubes is investigated by cyclic voltammetry, chronopotentiometry, and electrochemical impedance spectroscopy. The electrochemical performance of the pristine and the alloyed titania nanotubes reveals that as the niobium concentration increases the capacity increases. The titania nanotubes containing 10 wt% of Nb deliver a higher capacity, with good capacity retention and coulombic efficiency. Electrochemical impedance spectroscopy analysis shows that Nb alloying can decrease the overall cell impedance by reducing the charge transfer resistance.

Journal

Advanced Materials TechnologiesWiley

Published: Mar 1, 2018

Keywords: ; ; ; ;

There are no references for this article.