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[ Article ] | |
New & Renewable Energy | |
Abbreviation: New. Renew. Energy | |
ISSN: 1738-3935 (Print) 2713-9999 (Online) | |
Online publication date 19 Apr 2024 | |
Received 15 Feb 2024 Revised 18 Mar 2024 Accepted 20 Mar 2023 | |
DOI: https://doi.org/10.7849/ksnre.2024.0003 | |
하소 온도가 전고체 전지 전해질의 이온전도도에 미치는 영향 | |
Effect of Calcination Temperature on Ionic Conductivity of All-solid State Battery Electrolytes | |
Yu Taek Hong1)
; Ji Min Im1)
; Ki Sang Baek1)
; Chan Gyu Kim1)
; Seung Wook Baek2)
; Jung Hyun Kim3), *
| |
1)Master, Department of Advanced materials Science and Engineering, Hanbat National University | |
2)Ph.D, Interdisciplinary Materials Measurement Institue, Korea Research Institute of Standards and Science (KRISS) | |
3)Professor, Department of Advanced materials Science and Engineering, Hanbat National University | |
Correspondence to : *jhkim2011@hanbat.ac.kr Tel: +82-42-821-1239 Fax: +82-42-821-1592 | |
© 2024 by the New & Renewable Energy This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. | |
In this study, the electrochemical properties of garnet-structured all-solid-state battery electrolytes (Li6.4La3Zr1.4Ta0.6O12, hereafter LLZTO) were assessed by altering the calcination temperature, while maintaining a consistent sintering duration. Among the various heat treatment conditions employed for sample fabrication, the ‘700_1100’ condition, denoting a calcination temperature of 700°C and a sintering temperature of 1100°C, resulted in the most exceptional ionic conductivity of 4.89 × 10-4 S/cm and a relative density of 88.72% for the LLZTO material. This is attributed to the low calcination temperature of 700°C, leading to reduced grain size and enhanced cohesiveness, thus resulting in a higher sintered density. In addition, a microstructure similar to the typical sintering characteristics observed in Spark Plasma Sintering (SPS) methods was identified in the SEM analysis results under the ‘700_1100’ condition. Consequently, the ‘700_1100’ heat treatment condition was deemed to optimal choice for enhancing ionic conductivity.
Keywords: LLZTO(Li6.4La3Zr1.4Ta0.6O12), Calcination temperature, Sintering temperature, Particle size, Ionic conductivity 키워드: 하소 온도, 소결 온도, 입자 크기, 이온전도도 |
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