Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode
Чланак у часопису (Рецензирана верзија)
Метаподаци
Приказ свих података о документуАпстракт
Electrochemical and structural properties of LiV2O5 cathode were investigated. Obtained by solid state reaction at high temperature the material crystallized as gamma polymorph phase, γ-LiV2O5. The gamma structure provides two crystallographic sites to accommodate lithium ions, Li1 and Li2 position. Lithium insertion at these two sites occurs at two respective voltages versus lithium metal: ~3.6 V (Li1) and ~2.4 V (Li2). Intercalation at Li1 position is reversible in both organic and aqueous electrolyte and provides stable cycling performance at the high voltage. On the contrary, sluggish insertion/removal of Li+ at Li2 sites causes unstable performance and significant storage capacity fade at lower voltages. Lithium diffusion 3d landscape was determined by bond valence calculations applied on the γ-LiV2O5 phase, as well as on the metastable phases of γ′-V2O5 and ζ-Li2V2O5 that exist at high and low voltages respectively. The model was proposed based on inactivity of Li2 position of th...e metastable ζ-Li2V2O5 phase which provides explanation for the observed storage capacity loss at low voltages.
Кључне речи:
Li-ion batteries / cathode materials / LiV2O5 / Gamma phase / Bond valence modelИзвор:
Ceramics International, 2021, 47, 12, 17077-17083Издавач:
- Elsevier BV
Финансирање / пројекти:
- HiSuperBat - High-Capacity Electrodes for Aqueous Rechargeable Multivalent-Ion Batteries and Supercapacitors: Next Step Towards a Hybrid Model (RS-6062667)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200175 (Институт техничких наука САНУ, Београд) (RS-200175)
Напомена:
- Supplementary information: https://hdl.handle.net/21.15107/rcub_dais_11646
- This is the peer-reviewed version of the article: Milović, Miloš, Vujković, Milica, Jugović, Dragana, Mitrić, Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083, https://doi.org/10.1016/j.ceramint.2021.03.016
Повезане информације:
- Друга верзија
https://hdl.handle.net/21.15107/rcub_dais_11645 - Друга верзија
http://dx.doi.org/10.1016/j.ceramint.2021.03.016 - Повезани садржај
https://hdl.handle.net/21.15107/rcub_dais_11646
DOI: 10.1016/j.ceramint.2021.03.016
ISSN: 0272-8842
WoS: 000648865900003
Scopus: 2-s2.0-85102469472
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Milović, Miloš AU - Vujković, Milica AU - Jugović, Dragana AU - Mitrić, Miodrag PY - 2021 UR - https://dais.sanu.ac.rs/123456789/11655 AB - Electrochemical and structural properties of LiV2O5 cathode were investigated. Obtained by solid state reaction at high temperature the material crystallized as gamma polymorph phase, γ-LiV2O5. The gamma structure provides two crystallographic sites to accommodate lithium ions, Li1 and Li2 position. Lithium insertion at these two sites occurs at two respective voltages versus lithium metal: ~3.6 V (Li1) and ~2.4 V (Li2). Intercalation at Li1 position is reversible in both organic and aqueous electrolyte and provides stable cycling performance at the high voltage. On the contrary, sluggish insertion/removal of Li+ at Li2 sites causes unstable performance and significant storage capacity fade at lower voltages. Lithium diffusion 3d landscape was determined by bond valence calculations applied on the γ-LiV2O5 phase, as well as on the metastable phases of γ′-V2O5 and ζ-Li2V2O5 that exist at high and low voltages respectively. The model was proposed based on inactivity of Li2 position of the metastable ζ-Li2V2O5 phase which provides explanation for the observed storage capacity loss at low voltages. PB - Elsevier BV T2 - Ceramics International T1 - Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode SP - 17077 EP - 17083 VL - 47 IS - 12 DO - 10.1016/j.ceramint.2021.03.016 UR - https://hdl.handle.net/21.15107/rcub_dais_11655 ER -
@article{ author = "Milović, Miloš and Vujković, Milica and Jugović, Dragana and Mitrić, Miodrag", year = "2021", abstract = "Electrochemical and structural properties of LiV2O5 cathode were investigated. Obtained by solid state reaction at high temperature the material crystallized as gamma polymorph phase, γ-LiV2O5. The gamma structure provides two crystallographic sites to accommodate lithium ions, Li1 and Li2 position. Lithium insertion at these two sites occurs at two respective voltages versus lithium metal: ~3.6 V (Li1) and ~2.4 V (Li2). Intercalation at Li1 position is reversible in both organic and aqueous electrolyte and provides stable cycling performance at the high voltage. On the contrary, sluggish insertion/removal of Li+ at Li2 sites causes unstable performance and significant storage capacity fade at lower voltages. Lithium diffusion 3d landscape was determined by bond valence calculations applied on the γ-LiV2O5 phase, as well as on the metastable phases of γ′-V2O5 and ζ-Li2V2O5 that exist at high and low voltages respectively. The model was proposed based on inactivity of Li2 position of the metastable ζ-Li2V2O5 phase which provides explanation for the observed storage capacity loss at low voltages.", publisher = "Elsevier BV", journal = "Ceramics International", title = "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode", pages = "17077-17083", volume = "47", number = "12", doi = "10.1016/j.ceramint.2021.03.016", url = "https://hdl.handle.net/21.15107/rcub_dais_11655" }
Milović, M., Vujković, M., Jugović, D.,& Mitrić, M.. (2021). Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode. in Ceramics International Elsevier BV., 47(12), 17077-17083. https://doi.org/10.1016/j.ceramint.2021.03.016 https://hdl.handle.net/21.15107/rcub_dais_11655
Milović M, Vujković M, Jugović D, Mitrić M. Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode. in Ceramics International. 2021;47(12):17077-17083. doi:10.1016/j.ceramint.2021.03.016 https://hdl.handle.net/21.15107/rcub_dais_11655 .
Milović, Miloš, Vujković, Milica, Jugović, Dragana, Mitrić, Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" in Ceramics International, 47, no. 12 (2021):17077-17083, https://doi.org/10.1016/j.ceramint.2021.03.016 ., https://hdl.handle.net/21.15107/rcub_dais_11655 .