Wang, J;
Yu, R;
Wang, J;
Long, J;
Qiao, F;
Zhang, L;
He, G;
... Mai, L; + view all
(2023)
Bi nanoparticles encapsulated in nitrogen-doped carbon as a long-life anode material for magnesium batteries.
Journal of Magnesium and Alloys
, 11
(11)
pp. 4181-4188.
10.1016/j.jma.2023.10.001.
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Abstract
Bismuth has garnered significant interest as an anode material for magnesium batteries (MBs) because of its high volumetric specific capacity and low working potential. Nonetheless, the limited cycling performance (≤100 cycles) limits the practical application of Bi as anode for MBs. Therefore, the improvement of Bi cycling performance is of great significance to the development of MBs and is also full of challenges. Here, Bi nanoparticles encapsulated in nitrogen-doped carbon with single-atom Bi embedded (Bi@NC) are prepared and reported as an anode material for MBs. Bi@NC demonstrates impressive performance, with a high discharge capacity of 347.5 mAh g−1 and good rate capability (206.4 mAh g−1@500 mA g−1) in a fluoride alkyl magnesium salt electrolyte. In addition, Bi@NC exhibits exceptional long-term stability, enduring 400 cycles at 500 mA g−1. To the best of our knowledge, among reported Bi and Bi-based compounds for MBs, Bi@NC exhibits the longest cycle life in this work. The magnesium storage mechanism of Bi@NC is deeply studied through X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. This work provides some guidance for further improving the cycling performance of other alloy anodes in MBs.
| Type: | Article |
|---|---|
| Title: | Bi nanoparticles encapsulated in nitrogen-doped carbon as a long-life anode material for magnesium batteries |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jma.2023.10.001 |
| Publisher version: | https://doi.org/10.1016/j.jma.2023.10.001 |
| Language: | English |
| Additional information: | This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| Keywords: | Magnesium batteries; Bismuth; 3D tomography reconstruction; Magnesium alloy; Single-atom |
| 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-pp.ucl.ac.uk/id/eprint/10184811 |
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