Johnson, ID;
Blagovidova, E;
Dingwall, PA;
Brett, DJL;
Shearing, PR;
Darr, JA;
(2016)
High power Nb-doped Lifelong₄ Li-ion battery cathodes; pilot-scale synthesis and electrochemical properties.
Journal of Power Sources
, 326
pp. 476-481.
10.1016/j.jpowsour.2016.06.128.
Preview |
Text
Brett_High power Nb-doped LiFePO4 Li-ion battery cathodes. Pilot-scale synthesis and electrochemical properties_VoR.pdf - Published Version Download (2MB) | Preview |
Abstract
High power, phase-pure Nb-doped LiFePO₄ (LFP) nanoparticles are synthesised using a pilot-scale continuous hydrothermal flow synthesis process (production rate of 6 kg per day) in the range 0.01–2.00 at% Nb with respect to total transition metal content. EDS analysis suggests that Nb is homogeneously distributed throughout the structure. The addition of fructose as a reagent in the hydrothermal flow process, followed by a post synthesis heat-treatment, affords a continuous graphitic carbon coating on the particle surfaces. Electrochemical testing reveals that cycling performance improves with increasing dopant concentration, up to a maximum of 1.0 at% Nb, for which point a specific capacity of 110 mAh g⁻¹ is obtained at 10 C (6 min for the charge or discharge). This is an excellent result for a high power cathode LFP based material, particularly when considering the synthesis was performed on a large pilot-scale apparatus.
| Type: | Article |
|---|---|
| Title: | High power Nb-doped Lifelong₄ Li-ion battery cathodes; pilot-scale synthesis and electrochemical properties |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jpowsour.2016.06.128 |
| Publisher version: | http://dx.doi.org/10.1016/j.jpowsour.2016.06.128 |
| Language: | English |
| Additional information: | © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Cathode material, Li-ion battery, Doped, LiFePO₄, Niobium, Continuous hydrothermal |
| 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/1506002 |
Archive Staff Only
 |
View Item |
