Open Access
RSC Advances, volume 12, issue 46, pages 29595-29601
Polycationic doping of the LATP ceramic electrolyte for Li-ion batteries
Aiym Mashekova
1, 2
,
Yelnury Baltash
1
,
Mukagali Yegamkulov
1, 2
,
Ivan Trussov
1
,
Zhumabay Bakenov
1, 2, 3
,
Aliya Mukanova
1, 2, 3
1
Institute of Batteries LLC, Kabanbay Batyr Ave. 53, Nur-Sultan 010000, Kazakhstan
|
Publication type: Journal Article
Publication date: 2022-10-17
Journal:
RSC Advances
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 3.9
ISSN: 20462069, 20462069
General Chemistry
General Chemical Engineering
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.
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Mashekova A. et al. Polycationic doping of the LATP ceramic electrolyte for Li-ion batteries // RSC Advances. 2022. Vol. 12. No. 46. pp. 29595-29601.
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Mashekova A., Baltash Y., Yegamkulov M., Trussov I., Bakenov Z., Mukanova A. Polycationic doping of the LATP ceramic electrolyte for Li-ion batteries // RSC Advances. 2022. Vol. 12. No. 46. pp. 29595-29601.
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TY - JOUR
DO - 10.1039/d2ra05782d
UR - https://doi.org/10.1039/d2ra05782d
TI - Polycationic doping of the LATP ceramic electrolyte for Li-ion batteries
T2 - RSC Advances
AU - Mashekova, Aiym
AU - Baltash, Yelnury
AU - Yegamkulov, Mukagali
AU - Trussov, Ivan
AU - Bakenov, Zhumabay
AU - Mukanova, Aliya
PY - 2022
DA - 2022/10/17 00:00:00
PB - Royal Society of Chemistry (RSC)
SP - 29595-29601
IS - 46
VL - 12
SN - 2046-2069
SN - 2046-2069
ER -
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@article{2022_Mashekova,
author = {Aiym Mashekova and Yelnury Baltash and Mukagali Yegamkulov and Ivan Trussov and Zhumabay Bakenov and Aliya Mukanova},
title = {Polycationic doping of the LATP ceramic electrolyte for Li-ion batteries},
journal = {RSC Advances},
year = {2022},
volume = {12},
publisher = {Royal Society of Chemistry (RSC)},
month = {oct},
url = {https://doi.org/10.1039/d2ra05782d},
number = {46},
pages = {29595--29601},
doi = {10.1039/d2ra05782d}
}
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Mashekova, Aiym, et al. “Polycationic doping of the LATP ceramic electrolyte for Li-ion batteries.” RSC Advances, vol. 12, no. 46, Oct. 2022, pp. 29595-29601. https://doi.org/10.1039/d2ra05782d.