Bauer, D;
Roberts, AJ;
Starkey, CL;
Vedarajan, R;
Brett, DJL;
Shearing, PR;
Matsumi, N;
(2018)
TiO2/MoO2 Nanocomposite as Anode Materials for High Power Li-ion Batteries with Exceptional Capacity.
International Journal of Electrochemical Science
, 13
(5)
pp. 5120-5140.
10.20964/2018.05.37.
Preview |
Text
Brett paper dustin pre proofs.pdf - Accepted Version Download (2MB) | Preview |
Abstract
Nanoparticles of molybdenum(IV) oxide (MoO 2 ) and a TiO 2 /MoO 2 nanocomposite were synthesised via a continuous hydrothermal synthesis process. Both powders were analysed using XRD, XPS, TEM, and BET and evaluated as active materials in anodes for Li-ion half-cells. Cyclic voltammetry and galvanostatic charge/discharge measurements were carried out in the potential window of 0.1 to 3.0 V vs. Li/Li+. Specific capacities of ca. 350 mAh g -1 were obtained for both materials at low specific currents (0.1 A g -1 ); TiO 2 /MoO 2 composite electrodes showed superior rate behaviour & stability under cycling (compared to MoO 2 ), with stable specific capacities of ca. 265 mAh g -1 at a specific current of 0.5 A g -1 and ca. 150 mAh g -1 after 350 cycles at a specific current of 2.5 A g -1 . The improved performance of the composite material, compared to MoO 2 , was attributed to a smaller particle size, improved stability to volume changes (during cycling), and lower charge transfer resistance during cycling. Li-ion hybrid electrochemical capacitors using TiO 2 /MoO 2 composite anodes and activated carbon (AC) cathodes were evaluated and showed excellent performance with an energy density of 44 Wh kg -1 at a power density of 600 W kg -1 .
| Type: | Article |
|---|---|
| Title: | TiO2/MoO2 Nanocomposite as Anode Materials for High Power Li-ion Batteries with Exceptional Capacity |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.20964/2018.05.37 |
| Publisher version: | https://doi.org/10.20964/2018.05.37 |
| Language: | English |
| Additional information: | This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10049212 |
Archive Staff Only
 |
View Item |
