Title Page
Contents
ABSTRACT 10
Ⅰ. Introduction 12
Ⅱ. MATERIALS AND METHODS 16
2.1. Fabrication of scaffold electrolyte 16
2.2. Infiltrate precursor solution preparation and infiltration process 17
2.3. Assembly of the symmetric cells 17
2.4. Characterization 18
2.5. Electrochemical test 18
Ⅲ. RESULTS AND DISCUSSION 20
3.1. Characteristic of ZnO infiltrated LATP 20
3.2. Performance of ZnO infiltrated LATP 27
3.3. Mechanism of enhanced ionic conductivity 31
Ⅳ. CONCLUSION 34
Ⅴ. REFERENCES 35
국문초록 39
Figure 1. a) Schematic of the ZnO infiltration into LATP pellet. b) Mechanism of improving the electrochemical instability of the interface... 21
Figure 2. Long cycling of a symmetric cell using two different concentrations of zinc nitrate precursor: 0.01M and 0.05M. The 0.05M... 22
Figure 3. a) EIS spectra of the LATP pellet of a Pt electrode. The inset shows the corresponding equivalent circuit diagram. SEM images of... 25
Figure 4. a) Void size distribution graph of LATP and ZnO-LATP. b) XRD pattern for LATP and ZnO-LATP. SEM image of cross section of c) LATP... 26
Figure 5. EIS test of a) Li/LATP/Li and b) Li/ZnO-LATP/Li before and after 2h cycling. The inset shows the corresponding equivalent circuit.... 30
Figure 6. a) The Arrhenius plot for LATP and ZnO-LATP in different cycling states. b) XPS spectra for Zn 2p of LATP and ZnO-LATP. XPS spectra... 33