Birrozzi, A;
Mullaliu, A;
Eisenmann, T;
Asenbauer, J;
Diemant, T;
Geiger, D;
Kaiser, U;
... Bresser, D; + view all
(2022)
Synergistic Effect of Co and Mn Co-Doping on SnO2 Lithium-Ion Anodes.
Inorganics
, 10
(4)
, Article 46. 10.3390/inorganics10040046.
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Abstract
The incorporation of transition metals (TMs) such as Co, Fe, and Mn into SnO2 substantially improves the reversibility of the conversion and the alloying reaction when used as a negative electrode active material in lithium-ion batteries. Moreover, it was shown that the specific benefits of different TM dopants can be combined when introducing more than one dopant into the SnO2 lattice. Herein, a careful characterization of Co and Mn co-doped SnO2 via transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy and X-ray diffraction including Rietveld refinement is reported. Based on this in-depth investigation of the crystal structure and the distribution of the two TM dopants within the lattice, an ex situ X-ray photoelectron spectroscopy and ex situ X-ray absorption spectroscopy were performed to better understand the de-/lithiation mechanism and the synergistic impact of the Co and Mn co-doping. The results specifically suggest that the antithetical redox behaviour of the two dopants might play a decisive role for the enhanced reversibility of the de-/lithiation reaction.
| Type: | Article |
|---|---|
| Title: | Synergistic Effect of Co and Mn Co-Doping on SnO2 Lithium-Ion Anodes |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3390/inorganics10040046 |
| Publisher version: | https://doi.org/10.3390/inorganics10040046 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | SnO2; transition metal doping; reaction mechanism; anode; lithium battery |
| UCL classification: | 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 UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10148151 |
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