2024 - Sustainable Industrial Processing Summit
SIPS 2024 Volume 16. Intl. Symp on Electrochemistry, Molten Salts, Corrosion, Recycling and Battery
| Editors: | F. Kongoli, C.A. Amatore, R. Fehrmann, G. Kipouros, I. Paspaliaris, G. Saevarsdottir, R. Singh, R. Gupta, M. Halama, D. Macdonald, F. Wang, M. Barinova, F. Ahmed, C. Gaidau, X. Guo, K. Kolomaznik, H. Ozgunay, K. Tang, N.N. Thanh, S. Yefremova, K. Aifantis, Z. Bakenov, C. Capiglia, V. Kumar, A. U. H. Qurashi, A. Tressaud, R. Yazami |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2024 |
| Pages: | 243 pages |
| ISBN: | 978-1-998384-34-1 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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ELECTRONIC APPROACH IN THE DEVELOPMENT OF HIGH VOLTAGE CATHODE MATERIALS FOR Na-ION BATTERIES
Janina Molenda1;1AGH UNIVERSITY OF KRAKOW, Kraków, Poland;
Type of Paper: Regular
Id Paper: 71
Topic: 14
Abstract:
Transition metal compounds with a general formula AxMaXb (A=Li, Na, M= transition metal, X= O, S) constitute a group of potential electrode materials for a new generation of alkaline batteries.[1,2] This application is related to the fact that these compounds can reversibly intercalate high amounts of alkaline ions (1 or more moles per mole of MaXb) already at room temperature, without significant changes in their crystallographic structure. Nowadays, further development of rechargeable batteries is focused on the discovery of new, high-performance and low-cost electrode materials. Recently, Na-ion batteries have attracted much attention due to their many advantages, such as: high abundance of sodium in the Earth’s crust, its low cost and suitable redox potential (only 0.3 V above that of lithium).
The author of this work basing on her own investigations of numerous group of cathode materials has demonstrated that the electronic structure of the electrode materials plays an important role in the electrochemical intercalation process. The paper reveals correlation between crystal and electronic structure, chemical disorder, transport and electrochemical properties of layered transition metal oxides and polyanions Na2Fe2(SO4)3 cathode materials. The complex studies, including experimental as well as theoretical parts (electronic structure calculations performed using the Korringa-Kohn-Rostoker method with the coherent potential approximation KKR-CPA to account for chemical disorder), showed a strong correlation between structural, transport and electrochemical properties of these materials.
The detailed analysis presented in this work provides a strong proof that the high-entropy NaxMn0.2Fe0.2Co0.2Ni0.2Ti0.2O2 oxide with reduced content of cobalt and nickel and Na2Fe2(SO4)3 might be applicable in sodium batteries technology, especially in terms of large-scale energy storage units.