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Silicon doping of LATP via molten flux method

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Abstract

Among many kinds of electrolytes, Li1.3Al0.3Ti1.7(PO4)3 (LATP) ceramic electrolyte has a few focal points such as relatively low price, excellent resistance to air and moisture, high ionic conductivity, and environmental safety. Besides, LATP has a disadvantage in that it exposes batteries to degradation due to the interfacial layer formed after it touches metallic lithium because of the titanium reduction reaction. Herein, we report our results on the strategy of anion doping in LATP structures by Si (LATSP). The LATSP samples with various Si content were synthesized by a simple molten flux method at 800 °C with a pure phase. The structure, morphology, and ion-transport properties were analyzed. It was demonstrated that increasing Si doping content has significant positive effects on electrolyte conductivity.

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Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Funding

This research was supported by the research grants №AP09260012 “The development of red phosphorus-based composite anodes for the next generation lithium-ion and sodium-ion batteries” and №AP08052231 “Development of solid electrolytes with high ionic conductivity for next generation Li-ion batteries” from the Ministry of Education and Science of the Republic of Kazakhstan for 2020–2022.

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Authors and Affiliations

  1. Institute of Batteries LLP, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan

    Yelnury Baltash, Aiym Mashekova, Mukagali Yegamkulov, Ivan Trussov, Zhumabay Bakenov & Aliya Mukanova

  2. Department of Chemical and Materials Engineering School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan

    Aiym Mashekova, Mukagali Yegamkulov, Zhumabay Bakenov & Aliya Mukanova

  3. National Laboratory Astana, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan

    Zhumabay Bakenov & Aliya Mukanova

Authors
  1. Yelnury Baltash
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  2. Aiym Mashekova
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  3. Mukagali Yegamkulov
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  4. Ivan Trussov
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  5. Zhumabay Bakenov
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  6. Aliya Mukanova
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Contributions

Yelnury Baltash: conceptualization; experiments; methodology, overall; investigation; writing—original draft preparation; visualization. Aiym Mashekova: experiments; writing—“Experimental” and “Results and discussion” sections; writing, revision and editing. Mukagali Yegamkulov: experiments, editing. Zhumabay Bakenov: resources. Ivan Trussov: conceptualization; methodology, overall; resources; validation; investigation; data curation; writing-revision and editing. Aliya Mukanova: conceptualization; supervision; resources; funding acquisition; analysis; writing—review and editing.

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Correspondence to Aliya Mukanova.

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Baltash, Y., Mashekova, A., Yegamkulov, M. et al. Silicon doping of LATP via molten flux method. Ionics 29, 2647–2655 (2023). https://doi.org/10.1007/s11581-023-05011-0

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  • DOI: https://doi.org/10.1007/s11581-023-05011-0

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