TY - JOUR
T1 - Enhancing purity and ionic conductivity of NASICON-typed Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte
AU - Tolganbek, Nurbol
AU - Yerkinbekova, Yerkezhan
AU - Khairullin, Alimzhan
AU - Bakenov, Zhumabay
AU - Kanamura, Kiyoshi
AU - Mentbayeva, Almagul
N1 - Funding Information:
This research was supported by the Faculty development competitive research grants #110119FD4504 “Development of 3D solid state thin film materials for durable and safe Li-ion microbatteries” and #080420FD1906 “Development of composite anion exchange membranes with improved chemical and mechanical stability” from Nazarbayev University .
Publisher Copyright:
© 2021 Elsevier Ltd and Techna Group S.r.l.
PY - 2021
Y1 - 2021
N2 - Increasing demand for safe energy storage and portable power sources has led to intensive investigation for all-solid state Li-ion batteries and particularly to solid electrolytes for such rechargeable batteries. One of the most promising types of solid electrolytes is NASICON-structured Li1.3Al0.3Ti1.7(PO4)3 (LATP) due to its relatively high ionic conductivity and stability towards air and moisture. Here, the work is aimed on implementing the steps to hinder formation of impurity phases reported for various synthesis routes. Consequently, the applied modifications in the preparation strategies alter a crystal shape and size of prepared material. These two parameters have an enormous impact on properties of LATP. Fabrication of larger particles with a cubic shape significantly improves its ionic conductivity. As a result, LATP preparation methods such as a solution chemistry and molten flux resulted in the highest ionic conductivity samples with the value of ~10−4 S cm−1 at room temperature. Other LATPs obtained by solid-state reaction, sol-gel and spray drying methods depicted the ionic conductivity of ~10−5 S cm−1. The activation energy of lithium ion transfer in LATP varied in a range of 0.25–0.4 eV, which is in well agreement with the previously reported data.
AB - Increasing demand for safe energy storage and portable power sources has led to intensive investigation for all-solid state Li-ion batteries and particularly to solid electrolytes for such rechargeable batteries. One of the most promising types of solid electrolytes is NASICON-structured Li1.3Al0.3Ti1.7(PO4)3 (LATP) due to its relatively high ionic conductivity and stability towards air and moisture. Here, the work is aimed on implementing the steps to hinder formation of impurity phases reported for various synthesis routes. Consequently, the applied modifications in the preparation strategies alter a crystal shape and size of prepared material. These two parameters have an enormous impact on properties of LATP. Fabrication of larger particles with a cubic shape significantly improves its ionic conductivity. As a result, LATP preparation methods such as a solution chemistry and molten flux resulted in the highest ionic conductivity samples with the value of ~10−4 S cm−1 at room temperature. Other LATPs obtained by solid-state reaction, sol-gel and spray drying methods depicted the ionic conductivity of ~10−5 S cm−1. The activation energy of lithium ion transfer in LATP varied in a range of 0.25–0.4 eV, which is in well agreement with the previously reported data.
KW - LATP
KW - NASICON
KW - Particle shape and size
KW - Pellet density
KW - Solid electrolyte
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U2 - 10.1016/j.ceramint.2021.03.137
DO - 10.1016/j.ceramint.2021.03.137
M3 - Article
AN - SCOPUS:85103708712
SN - 0272-8842
VL - 47
SP - 18188
EP - 18195
JO - Ceramics International
JF - Ceramics International
IS - 13
ER -