Journal of Alloys and Compounds, volume 838, pages 155623

The mechanism of enhanced ionic conductivity in Li1.3Al0.3Ti1.7(PO4)3–(0.75Li2O·0.25B2O3) composites

K Kwatek ¹

W Ślubowska ¹

C Ruiz ²

Isabel Sobrados ²

Jesus Sanz ²

J E Garbarczyk ¹

J.L. Nowiński ¹

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Warsaw University of Technology, Faculty of Physics, 00–662 Warsaw, Poland |

[Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, Madrid, Spain] |

Publication type: Journal Article

Publication date: 2020-10-01

Elsevier

Journal: Journal of Alloys and Compounds

Quartile SCImago

Quartile WOS

Impact factor: 6.2

ISSN: 09258388

DOI: 10.1016/j.jallcom.2020.155623

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Materials Chemistry

Metals and Alloys

Mechanical Engineering

Mechanics of Materials

Abstract

The oxide-based Li+ conductors are considered as potential solid electrolytes for lithium-ion batteries. Among the NASICON–type materials, Li1.3Al0.3Ti1.7(PO4)3 (LATP) seems to be a promising candidate for application. Although its bulk conductivity is of the order of 10−3 S · cm−1, and seems to be sufficient for practical use, the total conductivity is considerably limited by the highly resistant grain boundaries. This shortcoming may be overcome by the formation of LATP–based ceramics with appropriate sintering aids. In this study, the 0.75Li2O·0.25B2O3 (LBO) glass with low melting point was chosen to improve the ionic conductivity of LATP. The properties of Li1.3Al0.3Ti1.7(PO4)3–y (0.75Li2O·0.25B2O3) (0 ≤ y ≤ 0.3) system were studied by means of: high temperature X-ray diffractometry (HTXRD), 6Li/7Li, 11B, 27Al and 31P magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR), thermogravimetry (TG), scanning electron microscopy (SEM), impedance spectroscopy (IS) and density methods. Based on the experimental results, it is shown that the use of LBO glass as a sintering aid results in the enhancement of the total ionic conductivity of LATP ceramics. The correlations between apparent density, microstructure, composition, sintering temperature and ionic conductivity are presented and discussed. The presumed mechanism of the conductivity enhancement is analyzed in terms of the brick-layer model (BLM). The highest value of the total ionic conductivity, equal to 1.9 × 10−4 S · cm−1, was obtained for LATP–0.1LBO sintered at 800 °C.

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Citations by journals

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Journal of Alloys and Compounds	Journal of Alloys and Compounds, 5, 16.67% Journal of Alloys and Compounds 5 publications, 16.67%
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Nanomaterials	Nanomaterials, 1, 3.33% Nanomaterials 1 publication, 3.33%
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Solid State Ionics	Solid State Ionics, 1, 3.33% Solid State Ionics 1 publication, 3.33%
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ACS applied materials & interfaces	ACS applied materials & interfaces, 1, 3.33% ACS applied materials & interfaces 1 publication, 3.33%
ACS Applied Electronic Materials	ACS Applied Electronic Materials, 1, 3.33% ACS Applied Electronic Materials 1 publication, 3.33%
Advanced Engineering Materials	Advanced Engineering Materials, 1, 3.33% Advanced Engineering Materials 1 publication, 3.33%
Acta Materialia	Acta Materialia, 1, 3.33% Acta Materialia 1 publication, 3.33%
Russian Chemical Reviews	Russian Chemical Reviews, 1, 3.33% Russian Chemical Reviews 1 publication, 3.33%
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Citations by publishers

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Elsevier	Elsevier, 16, 53.33% Elsevier 16 publications, 53.33%
Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 6, 20% Multidisciplinary Digital Publishing Institute (MDPI) 6 publications, 20%
Springer Nature	Springer Nature, 2, 6.67% Springer Nature 2 publications, 6.67%
American Chemical Society (ACS)	American Chemical Society (ACS), 2, 6.67% American Chemical Society (ACS) 2 publications, 6.67%
The Electrochemical Society	The Electrochemical Society, 1, 3.33% The Electrochemical Society 1 publication, 3.33%
Taylor & Francis	Taylor & Francis, 1, 3.33% Taylor & Francis 1 publication, 3.33%
Wiley	Wiley, 1, 3.33% Wiley 1 publication, 3.33%
Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii	Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii, 1, 3.33% Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii 1 publication, 3.33%
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Kwatek K. et al. The mechanism of enhanced ionic conductivity in Li1.3Al0.3Ti1.7(PO4)3–(0.75Li2O·0.25B2O3) composites // Journal of Alloys and Compounds. 2020. Vol. 838. p. 155623.

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Kwatek K., Ślubowska W., Ruiz C., Sobrados I., Sanz J., Garbarczyk J. E., Nowiński J. The mechanism of enhanced ionic conductivity in Li1.3Al0.3Ti1.7(PO4)3–(0.75Li2O·0.25B2O3) composites // Journal of Alloys and Compounds. 2020. Vol. 838. p. 155623.

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TY - JOUR

DO - 10.1016/j.jallcom.2020.155623

UR - https://doi.org/10.1016/j.jallcom.2020.155623

TI - The mechanism of enhanced ionic conductivity in Li1.3Al0.3Ti1.7(PO4)3–(0.75Li2O·0.25B2O3) composites

T2 - Journal of Alloys and Compounds

AU - Kwatek, K

AU - Ślubowska, W

AU - Ruiz, C

AU - Sobrados, Isabel

AU - Sanz, Jesus

AU - Garbarczyk, J E

AU - Nowiński, J.L.

PY - 2020

DA - 2020/10/01 00:00:00

PB - Elsevier

SP - 155623

VL - 838

SN - 0925-8388

ER -

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Cite this

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@article{2020_Kwatek,

author = {K Kwatek and W Ślubowska and C Ruiz and Isabel Sobrados and Jesus Sanz and J E Garbarczyk and J.L. Nowiński},

title = {The mechanism of enhanced ionic conductivity in Li1.3Al0.3Ti1.7(PO4)3–(0.75Li2O·0.25B2O3) composites},

journal = {Journal of Alloys and Compounds},

year = {2020},

volume = {838},

publisher = {Elsevier},

month = {oct},

url = {https://doi.org/10.1016/j.jallcom.2020.155623},

pages = {155623},

doi = {10.1016/j.jallcom.2020.155623}

}

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Publisher

Elsevier

Journal

Journal of Alloys and Compounds

Quartile SCImago

Quartile WOS

Impact factor

6.2

ISSN

09258388 (Print)