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Volume 5, Issue 6 (Suppl) J Mat. Sci.
ISSN: 2321-6212 Advanced Materials 2017
October 26-28, 2017
OCTOBER 26-28, 2017 OSAKA, JAPAN
13TH INTERNATIONAL CONFERENCE ON
Advanced Materials and Nanotechnology
Synthesis of high ion conductivity solid electrolyte NASICON: Glass complex
Keun Young Yoon, Yi Eun Jung and Hae Jin Hwang
Inha University, Republic of Korea
Many lithium ion batteries use metal oxide cathode materials and combustible organic liquid electrolyte. The liquid
electrolytes have a high ion conductivity of 10-2 s/cm2. However, fire and explosion caused by short circuit due to leakage
of liquid electrolyte and breaking of membrane, etc. may occur and therefore, there is always a question about safety. Used
solid electrolyte instead of liquid electrolyte prevents to fire and explosion effectually and possible to make a battery had
high capacity. To commercialize solid electrolytes, they are demanded high ion conductivity similar liquid electrolyte and
minimized reaction with cathode materials. Among the solid electrolytes, the NASICON type electrolytes have a stable phase
in water and atmosphere and less reactivity with the anode and cathode materials. We studied to improve ion conductivity
of LiZr2(PO 4)3(LZP) which have a Li-ion conductivity mechanism. LZP compound stabilizes in a triclinic structure at room
temperature. On heating over 60 degrees, LZP compound stabilizes in a rhombohedral structure. The Li ion conductivities
of a triclinic and rhombohedral phase are 5×10-8 s/cm at room temperature and 1×10-5 s/cm close to room temperature. For
stabilization, a rhombohedral structure at room temperature, some studies substitute Y ion for Zr ion in LZP. The sintering
temperature is high and the sintering time is long nevertheless they have low density. For improve theoretical density, we mixed
Li-ion conductivity glass and Y ion doped LZP. Used SEM and XRD and HSM, we evaluated characteristics of NASICON-glass
complex and ion conductivity was measured with impedance analyzer.
Biography
Keun Young Yoon is currently pursuing his MS degree in department of materials science and engineering from the Inha University, Republic of Korea. His main
topics are studying on all solid batteries performance evaluation and basic properties.
Keun Young Yoon et al., J Mat. Sci. 2017, 5:6
DOI: 10.4172/2321-6212-C1-009