Xu, Y;
Bauer, D;
Lübke, M;
Ashton, TE;
Zong, Y;
Darr, JA;
(2018)
High-power sodium titanate anodes; a comparison of lithium vs sodium-ion batteries.
Journal of Power Sources
, 408
pp. 28-37.
10.1016/j.jpowsour.2018.10.038.
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Abstract
Sodium titanate nanopowder (nominal formula Na1.5H0.5Ti3O7) was directly synthesized using a continuous hydrothermal flow synthesis process using a relatively low base concentration (4 M NaOH) in process. The as-made titanate nanomaterials were characterised using powder X-ray diffraction, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy, Raman spectroscopy, Brunauer–Emmett–Teller analysis and transmission electron microscopy, and evaluated as potential electrode materials for Li-ion and Na-ion batteries. Cyclic voltammetry studies on half-cells revealed that the sodium titanate nanomaterial stored charge primarily through a combination of pseudocapacitive and diffusion-limited processes in both systems. Electrochemical cycling tests at a high specific current of 1000 mA g−1, revealed that the Li-ion and Na-ion cells retained relatively high specific capacities after 400 cycles of 131 and 87 mAh g−1, respectively. This study demonstrates the potential of CHFS-made sodium titanate nanopower as an anode material for both Li- and Na-ion cell chemistries.
| Type: | Article |
|---|---|
| Title: | High-power sodium titanate anodes; a comparison of lithium vs sodium-ion batteries |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jpowsour.2018.10.038 |
| Publisher version: | https://doi.org/10.1016/j.jpowsour.2018.10.038 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Continuous hydrothermal flow synthesis, Sodium titanate, Na2Ti3O7Na-ion battery, Li-ion battery, High power |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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/10062059 |
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