신동욱
2017-02-21T02:08:16Z
2017-02-21T02:08:16Z
2015-06
JOURNAL OF POWER SOURCES, v. 284, Page. 44-48
0378-7753
1873-2755
http://www.sciencedirect.com/science/article/pii/S0378775315003870
http://hdl.handle.net/20.500.11754/25565
The ionic conductivity of 78Li(2)S center dot 22P(2)S(5) glass-ceramics is investigated as a function of the phase and the amount of precipitated crystal produces by two-step heat treatment comprising controlled nucleation and growth stages. Crystallization kinetics of amorphous 78Li(2)S center dot 22P(2)S(5) is analyzed by differential thermal analysis, and the obtained results show that the maximum nucleation rate and crystal growth rate is achieved at 170 degrees C and 230 degrees C, respectively. The heat treatment process is optimized based on classical phase transformation theory, using the maximum nucleation rate and crystal growth rate. The optimized heat treatment consists of nucleation at 170 degrees C for 30 min followed by crystal growth at 230 degrees C for 3 h. Lithium ion conductivity is improved by 89% by using this treatment to control the crystallization kinetics. (C) 2015 Elsevier B.V. All rights reserved.
This work was supported by an industrial academic collaboration program funded by Hyundai Motor Company, and partially the outcome of the National Strategic R&D Program for Industrial Technology (10043868), funded by the Ministry of Trade, Industry and Energy.
en
ELSEVIER SCIENCE BV
Solid electrolyte
Lithium phosphorus sulfide
Lithium ion conductivity
Differential thermal analysis
Glass ceramics
Crystal growth
Crystallization kinetics of Li2S-P2S5 solid electrolyte and its effect on electrochemical performance
Article
284
10.1016/j.jpowsour.2015.02.141
44-48
JOURNAL OF POWER SOURCES
Eom, Minyong
Kim, Junghoon
Noh, Sungwoo
Shin, Dongwook
2015001360
S
COLLEGE OF ENGINEERING[S]
DIVISION OF MATERIALS SCIENCE AND ENGINEERING
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