Effect of applying a carbon coating on the crystal structure and de-/lithiation mechanism of Mn-doped ZnO lithium-ion anodes
peer-reviewed
Erstveröffentlichung
2021-03-01Authors
Eisenmann, Tobias
Birrozzi, Adele
Mullaliu, Angelo
Giuli, Gabriele
Trapananti, Angela
Wissenschaftlicher Artikel
Published in
Journal of The Electrochemical Society ; 168 (2021), 3. - Art.-Nr. 030503. - ISSN 0013-4651. - eISSN 1945-7111
Link to original publication
https://dx.doi.org/10.1149/1945-7111/abe6efInstitutions
Document version
published version (publisher's PDF)Abstract
The introduction of transition metal dopants such as Fe and Co in zinc oxide enables substantially enhanced reversible capacities and greater reversibility of the de-/lithiation reactions occurring. Herein, we report a comprehensive analysis of the electrochemical processes taking place in Mn-doped ZnO (Zn0.9Mn0.1O) and carbon-coated Zn0.9Mn0.1O upon de-/lithiation. The results shed light on the impact of the dopant chemistry and, especially, its coordination in the crystal structure. When manganese does not replace zinc in the wurtzite structure, only a moderate improvement in electrochemical performance is observed. However, when applying the carbonaceous coating, a partial reduction of manganese and its reallocation in the crystal structure occur, leading to a substantial improvement in the material’s specific capacity. These results provide important insights into the impact of the lattice position of transition metal dopants—a field that has received very little, essentially no attention, so far.
Is supplemented by
https://iopscience.iop.org/article/10.1149/1945-7111/abe6ef#Subject headings
[GND]: Lithium-Ionen-Akkumulator | Energiespeicher[LCSH]: Lithium cells | Energy storage
[Free subject headings]: Batteries Li-ion | Nanoscale materials | Interface modification
[DDC subject group]: DDC 540 / Chemistry & allied sciences
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Please use this identifier to cite or link to this item: http://dx.doi.org/10.18725/OPARU-50334
Eisenmann, Tobias et al. (2023): Effect of applying a carbon coating on the crystal structure and de-/lithiation mechanism of Mn-doped ZnO lithium-ion anodes. Open Access Repositorium der Universität Ulm und Technischen Hochschule Ulm. http://dx.doi.org/10.18725/OPARU-50334
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