| 학회 | 한국공업화학회 |
| 학술대회 | 2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 | 19권 1호 |
| 발표분야 | 에너지저장변환_포스터 |
| 제목 | Electrochemical characteristics of Halogen-doping Li4Ti5O12 as anode for lithium-ion batteries |
| 초록 | Li4Ti5O12 has received great attention as an anode material in Li-ion batteries due to its “zero strain” characteristics in lithium insertion/removal process and thereby the excellent cycleability. The potential for Li-insertion is about 1.5 V vs. Li, which is above the reduction potential of most electrolytes or solvent, which makes Li4Ti5O12 a promising anode material of Li-ion batteries for safety concerns. Unfortunately, Li4Ti5O12 exhibits a poor electronic conductivity, which limits its rate-capability. Our results showed that the Li4Ti5O12−xHalx (Hal: F, Cl and Br, 0.125≤x≤0.250) compounds showed better electronic conductivity and corresponding experimental results showed better reversibility and higher cyclic stability compared with pristine Li4Ti5O12. In addition, the theoretical results suggest that there are two kinds of Li4Ti5O12 unit cell, n-type and p-type. The two types of unit cells have different structures and electronic properties, which provides clear clue of the reason why halogen-doping Li4Ti5O12 shows improved electronic properties. |
| 저자 | 이치호, 이상욱 |
| 소속 | 한양대 |
| 키워드 | Li-ion battery |
