Gel polymer electrolytes (GPEs) exhibit enhanced safety and dimensional stability over liquid electrolytes (LEs), which is the critical advantage for the application of the ⓒ 2013 DGIST
Table Of Contents
Ⅰ. INTRODUCTION 1 -- Ⅱ. THEORITICAL BACKGROUND 2 -- 2.1 Type of electrolyte 2 -- 2.1.1 Liquid electrolyte(LE) 2 -- 2.1.2 Solid electrolyte(SE) 3 -- 2.1.3 Gel polymer electrolyte(GPE) 4 -- 2.2 Overpotentials in LIBs 4 -- 2.3 De-solvation energy 5 -- 2.4 Electrochemical impedance spectroscopy(EIS) in battery field 6 -- Ⅲ. EXPERIMENTAL 8 -- 3.1 Optimization of polymerization condition 8 -- 3.2 Preparation of coin cell 9 -- 3.3 Coin half/full cell assembly 10 -- 3.4 Coin symmetric cell assembly 11 -- 3.5 Coin cell rate performance test 11 -- 3.6 Electrochemical impedance spectroscopy (EIS) 11 -- Ⅳ. RESURT AND DISCUSSION 12 -- 4.1. Optimization of polymerization condition for non free liquid 12 -- 4.2. LiNi1/3Co1/3Mn1/3O2/Graphite coin full cell test 13 -- 4.3. LiNi1/3Co1/3Mn1/3O2 and Graphite Coin half cell test 15 -- 4.3.1 LiNi1/3Co1/3Mn1/3O2/lithium foil cell 15 -- 4.3.2 Graphite/lithium foil cell 17 -- 4.4. LiNi1/3Co1/3Mn1/3O2/Graphite coin full cell EIS test 19 -- 4.5. LiNi1/3Co1/3Mn1/3O2/LiNi1/3Co1/3Mn1/3O2 coin symmetric cell EIS test 23 -- 4.6. Effect of rate performance of separator type using LiNi1/3Co1/3Mn1/3O2 and Graphite 26 -- 4.7. LiNi0.5Co0.2Mn0.3O2/Graphite and LiCoO2/Graphite coin full cell test using two type separators 28 -- Ⅴ. CONCLUSION 31
Research Interests
Lithium-ion batteries; Novel Materials for rechargeable batteries; Novel energy conversion;storage systems; Electrochemistry; 리튬이차전지; 이차전지용 신규 전극 및 전해액; 신규 에너지변환 및 저장 시스템; 전기화학