TY - JOUR

T1 - Application of dry high-energy ball-milling to increase the density and grain boundary conductivity of solid ceramic electrolytes: Li1.3Al0.3Ti1.7(PO4)3 as a case study

AU - Shindrov, Alexander A.

AU - Skachilova, Maria G.

AU - Shapovalova, Alexandra A.

AU - Kosova, Nina V.

N1 - This work was supported by the Russian Science Foundation, Project #22-43-02028. The authors are grateful to their colleagues Dr. A.V. Ukhina (ISSCM SB RAS) and T.A. Borisenko (ISSCM SB RAS) for registration of the XRD patters and the Centre for Collective Use of Nikolaev Institute of Inorganic Chemistry SB RAS for registration of FTIR spectra.

PY - 2024

Y1 - 2024

N2 - In this work, the effect of high energy ball milling (HEBM) on the density and conductive properties of as-prepared Li1.3Al0.3Ti1.7(PO4)3 (LATP) solid ceramic electrolyte has been demonstrated. It has been shown that the composition of the LATP phase remains unchanged after HEBM. A gradual decrease in the average crystallite size was observed during the HEBM duration. The multimodal particle size distribution in HEBM samples has a positive effect on their densification during pressing, allowing the use of low pressure (~ 5 MPa). High-density LATP ceramics (~ 89% of the theoretical value) with an ionic conductivity of 2.15∙10−4 S∙cm−1 were obtained after 30 min of HEBM. The value of electronic conductivity obtained by the analysis of DC polarization using blocking Ag electrodes is equal to 8.3∙10−9 S∙cm−1. The HEBM approach is accessible and easy to implement. This method does not require high pressure, long sintering temperature and/or time, and additional reagents such as fusible additives. The use of HEBM allows the density and ionic conductivity of the resulting ceramics to be adjusted.

AB - In this work, the effect of high energy ball milling (HEBM) on the density and conductive properties of as-prepared Li1.3Al0.3Ti1.7(PO4)3 (LATP) solid ceramic electrolyte has been demonstrated. It has been shown that the composition of the LATP phase remains unchanged after HEBM. A gradual decrease in the average crystallite size was observed during the HEBM duration. The multimodal particle size distribution in HEBM samples has a positive effect on their densification during pressing, allowing the use of low pressure (~ 5 MPa). High-density LATP ceramics (~ 89% of the theoretical value) with an ionic conductivity of 2.15∙10−4 S∙cm−1 were obtained after 30 min of HEBM. The value of electronic conductivity obtained by the analysis of DC polarization using blocking Ag electrodes is equal to 8.3∙10−9 S∙cm−1. The HEBM approach is accessible and easy to implement. This method does not require high pressure, long sintering temperature and/or time, and additional reagents such as fusible additives. The use of HEBM allows the density and ionic conductivity of the resulting ceramics to be adjusted.

KW - Dense ceramics

KW - Grain boundary conductivity

KW - High-energy ball-milling

KW - Li1.3Al0.3Ti1.7(PO4)3

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85211778149&origin=inward&txGid=228e0614cd4f7194b5eabfc74b8cc93b

UR - https://www.mendeley.com/catalogue/3ffed26b-ae0f-3a4d-b8bf-9d65410437f5/

U2 - 10.1007/s11581-024-05986-4

DO - 10.1007/s11581-024-05986-4

M3 - Article

JO - Ionics

JF - Ionics

SN - 0947-7047

ER -