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  • Invited Paper: Nano-structured materials (particles, fibers, colloids, composites, etc.)
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Hydrothermal synthesis of perovskite-type solid electrolyte nanoplate

Journal of Sol-Gel Science and Technology volume 104, pages 599–605 (2022)Cite this article

Abstract

Perovskite-type (A,La)TiO3 (A: Li or Na) nanoplates were synthesized by hydrothermal reaction using titanium bis(ammonium lactate) dihydroxide as a starting material at 260 °C for 48 h. When NaOH was used as a mineralizer, perovskite single phase was obtained, but when LiOH was used, impurities including lanthanum hydroxide were obtained, and no perovskite phase was obtained. Scanning transmission electron microscopy (STEM) analyses demonstrated that perovskite NPs have plate-like morphology with plane index of {100}. Energy dispersive X-ray spectroscopy (EDX) revealed that Na partly occupied in A-site of perovskite structure. The nanoplates were pressed into a pellet and sintered at 1000 °C. The pellet exhibited an ionic conductivity of 3.8 × 10−6 S/cm.

Graphical abstract

Highlights

  • Perovskite-type (A,La)TiO3 (A : Li or Na) nanoplates were synthesized by hydrothermal reaction.

  • The nanoplates had {100} plane of theperovskite with about 10 nm thick.

  • The nanoplates were found to be effective in lowering the sintering temperature.

  • The nanoplate-pellet sintered at 1000 °C exhibited an ionic conductivity of 3.8 × 10−6 S/cm.

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Acknowledgements

A part of this work was supported by The Naito Science & Engineering Foundation and a project, JPNP20005, commissioned by the New Energy and Industrial Technology Development Organization (NEDO), Japan.

Author contributions

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by KM, NH, ZL, HI and KH. The first draft of the manuscript was written by KM and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Authors and Affiliations

  1. Innovative Functional Materials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Nagoya, Aichi, Japan

    Ken-ichi Mimura, Naoki Hamao, Hiroki Itasaka, Zheng Liu & Koichi Hamamoto

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  1. Ken-ichi Mimura
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  2. Naoki Hamao
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  3. Hiroki Itasaka
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  5. Koichi Hamamoto
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Correspondence to Ken-ichi Mimura.

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Mimura, Ki., Hamao, N., Itasaka, H. et al. Hydrothermal synthesis of perovskite-type solid electrolyte nanoplate. J Sol-Gel Sci Technol 104, 599–605 (2022). https://doi.org/10.1007/s10971-022-05810-3

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