POLYCATIONIC DOPING OF THE LATP CERAMIC ELECTROLYTE FOR LI-ION BATTERIES
| dc.contributor.author | Mashekova, Aiym | |
| dc.contributor.author | Baltash, Yelnury | |
| dc.contributor.author | Yegamkulov, Mukagali | |
| dc.contributor.author | Trussov, Ivan | |
| dc.contributor.author | Bakenov, Zhumabay | |
| dc.contributor.author | Mukanova, Aliya | |
| dc.date.accessioned | 2022-11-15T08:22:44Z | |
| dc.date.available | 2022-11-15T08:22:44Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | All-solid-state Li-ion batteries (LIBs) with a solid electrolyte instead of a liquid one demonstrate significantly higher safety in contrast with the conventional liquid-based LIBs. An inorganic NASICON-type Li conductor Li1.3Al0.3Ti1.7(PO4)3 (LATP) is a promising solid electrolyte with an ionic conductivity of up to 10−3 S cm−1 at room temperature. However, LATP gradually degrades in contact with Li metal because of reduction of Ti4+ to Ti3+, resulting in a lower ionic conductivity at the electrolyte–electrode interface. Cation doping is a promising approach to stabilize the LATP structure and mitigate the Ti reduction. Here, we report our findings on the alternative polycationic doping strategy of the LiTi2(PO4)3 (LTP) structure, when a heterovalent cation is added along with Al. In particular, we studied the effect of tetravalent and divalent cation dopants (Zr, Hf, Ca, Mg, Sr) of LATP on the Li-ion conduction and Ti reduction during interaction with lithium metal. The samples were prepared by molten flux and solid-state reaction methods. The structure, morphology, and ion-transport properties of the samples were analyzed. The activation energy of Li-ion migration in all synthesized systems was calculated based on the electrochemical impedance spectroscopy (EIS) data retrieved for a temperature range of 25–100 °C. From the obtained results, the tetravalent doping (Zr4+ and Hf4+) appeared to be a more promissing route to improve the LATP electrolyte than the divalent doping (Mg2+, Ca2+, and Sr2+). The X-ray photoelectron spectroscopy analysis of the samples after their contact with lithium provided the data, which could shed light on the effect of the incorporated dopants onto the Ti reduction. | en_US |
| dc.identifier.citation | Mashekova, A., Baltash, Y., Yegamkulov, M., Trussov, I., Bakenov, Z., & Mukanova, A. (2022b). Polycationic doping of the LATP ceramic electrolyte for Li-ion batteries. RSC Advances, 12(46), 29595–29601. https://doi.org/10.1039/d2ra05782d | en_US |
| dc.identifier.uri | http://nur.nu.edu.kz/handle/123456789/6781 | |
| dc.language.iso | en | en_US |
| dc.publisher | RSC Advances | en_US |
| dc.rights | Attribution-NonCommercial-ShareAlike 3.0 United States | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/3.0/us/ | * |
| dc.subject | Type of access: Open Access | en_US |
| dc.subject | LATP ceramic electrolyte | en_US |
| dc.subject | Li-ion batteries | en_US |
| dc.title | POLYCATIONIC DOPING OF THE LATP CERAMIC ELECTROLYTE FOR LI-ION BATTERIES | en_US |
| dc.type | Article | en_US |
| workflow.import.source | science |