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Temperature-dependent long-term stability of Sr0.6Na0.4SiO2.8 fast ion conductors

Title
Temperature-dependent long-term stability of Sr0.6Na0.4SiO2.8 fast ion conductors
Authors
Joh, Dong WooShin, Hong RimKim, JongwooLee, Kang-Taek
DGIST Authors
Lee, Kang-Taek
Issue Date
2019-03
Citation
Journal of Industrial and Engineering Chemistry, 71, 387-392
Type
Article
Article Type
Article
ISSN
1226-086X
Abstract
In this work, for the first time, we systematically evaluated the temperature-dependent long-term stability of Na-doped SrSiO3 super ionic conductors. The total conductivity of the Sr0.6Na0.4SiO2.8 (40SNS) was monitored in situ by electrochemical impedance spectroscopy. The conductivity of the 40SNS at 700 °C degraded within 1 h due to the crystallization of Na2Si2O5. However, at 450 °C, the initial conductivity of the 40SNS was firmly maintained for 260 h without any observable phase transition. These results demonstrate the existence of a threshold temperature regime that suppresses the crystallization kinetics of the amorphous phase of Na-doped SrSiO3 materials. © 2018 The Korean Society of Industrial and Engineering Chemistry
URI
http://hdl.handle.net/20.500.11750/9577
DOI
10.1016/j.jiec.2018.11.050
Publisher
한국공업화학회
Related Researcher
  • Author Lee, Kang Taek AECSL(Advanced Energy Conversion and Storage Lab)
  • Research Interests Advanced energy conversion and storage systems; Solid-state Electrochemical Energy Devices; All solid-state batteries; low-temperature solid oxide fuel cells(SOFCs); 신 에너지 변환 및 저장 시스템; Solid-state Electrochemical Energy Devices; 차세대 전고체 이차전지(solid-state batteries) 및 저온화 고체산화물 연료전지(LT-SOFCs)
Files:
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Collection:
Department of Energy Science and EngineeringAECSL(Advanced Energy Conversion and Storage Lab)1. Journal Articles


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