guest ::
| Home > Publications database > Proof of concept: Ti-doped zinc ferrite for application as cathode material in zinc-ion batteries |
| Home > Publications database > Proof of concept: Ti-doped zinc ferrite for application as cathode material in zinc-ion batteries |
| Poster (After Call) | FZJ-2025-03266 |
; ; ;
2024
This record in other databases:
Please use a persistent id in citations: doi:10.34734/FZJ-2025-03266
Abstract: Apart from the ubiquitous lithium-ion batteries, the focus of research has recently increasingly fallen on energy storage alternatives that promise high energy density with cheaper and more available starting materials, like e.g. zinc ion batteries (ZIB). So far, mainly Mn- or V-based oxides as well as Prussian blue analogues have been investigated as promising cathode materials for ZIB. In this study, the suitability of the spinel material ZnFe2O4 for use as active material at the positive electrode in zinc ion batteries is investigated. ZnFe2O4 is already a well-investigated material because it shows various very interesting physical features. Possible applications range from magnetic data storage to photoelectrochemical water splitting to active materials in lithium ion batteries. Other than the closely related ZnMn2O4 there are no reports on ZnFe2O4 being applied in ZIB, even though there are theoretical works that suggest it as promising candidate which should show a high specific capacity and good zinc ion conductivity besides the already confirmed good electronic conductivity [1, 2]. In addition to pure ZnFe2O4, part of the Fe3+ in our study was substituted with Ti4+ to achieve stabilization of Zn vacancies in the material and to increase ionic conductivity. Ceramic pellets with the composition ZnFe2-xTixO4 and x = 0 to 0.25 were prepared via a Pechini synthesis route and investigated regarding their electrochemical characteristics. Subsequently, cathode sheets from both pure and Ti-doped materials were prepared and measured in a cell setup using 0.5 M zinc triflate in acetonitrile as electrolyte in an “anode-free” approach with tin foil as negative electrode. Acknowledgements: The authors thank Prof. Thomas Jüstel for help and discussion.Literature:1. Liu, M.; Rong, Z.; Malik, R.; Canepa, P.; Jain, A.; Ceder, G.; Persson, K. A. Energy & Environment Sci 2015, 8 (3), 964-974.2. Morkhova, Y. A.; Rothenberger, M.; Leisegang, T.; Adams, S.; Blatov, V. A.; Kabanov, A. A. J Phys Chem C 2021, 125 (32), 17590-17599.
|
The record appears in these collections: |
PDF