| 학회 | 한국재료학회 |
| 학술대회 | 2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 | 23권 2호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | Preparation of Ti3+-doped TiO2 composite anodes materials using imidazole reduction and their electrochemical properties |
| 초록 | Recently, the importance flexible lithium ion battery is increasing. TiO2 is one of the most intensively studied anode materials for lithium ion batteries due to its high chemical stability and low volume change according to intercalation/deintercalation. However, the low electrical and ionic conductivity of TiO2 limit its applications. To overcome these problems, many approaches such as nanostructuring, controlling morphologies, doping foreign ions and so on have been attempted. Among them, it is known that Ti3+-doped TiO2 has greatly improved lithium ion conductivity, conducting an excellent electrochemical properties. In this study, Ti3+-doped TiO2 anatase type nanoparticles were synthesized using a chemical reduction method with imidazole, and applied to a flexible lithium ion battery using a solid polymer electrolyte. Composite electrodes were fabricated by mixing it with polymer electrolyte to decrease the interfacial resistance between the active TiO2 and the solid polymer electrolyte. The electrochemical properties of the composite electrode were compared by varying the mixing ratio of TiO2, solid polymer electrolyte and super P. As a result, good capacity of 240 mAh/g was obtained at the ratio of 80:12:8. To confirm its applicability onto a flexible lithium ion batteries , in addition, a pouch cell was fabricated and its characteristics were investigated through GITT analysis and electrochemical evaluation. |
| 저자 | 조희구1, 정하균1, 우미혜1, 최성호1, 강영구1, 전형탁2 |
| 소속 | 1한국화학(연), 2한양대 |
| 키워드 | flexible; pouch cell |
