| 학회 |
한국공업화학회 |
| 학술대회 |
2014년 봄 (04/30 ~ 05/02, 제주국제컨벤션센터) |
| 권호 |
18권 1호 |
| 발표분야 |
포스터-전기화학 |
| 제목 |
Simple Size Control of TiO2 Nanoparticles and Their Electrochemical Performance: Emphasizing the Contribution of Surface Area to Lithium Storage at High-rates |
| 초록 |
Titanium oxide (TiO2) has been regarded as one of the most promising alternative to the conventional graphite for lithium ion batteries. In charging and discharging process, the volume change of TiO2 is less than 4% as Li+ ion inserted into the TiO2. Also, TiO2 electrode operates at higher voltages (1.5~1.8 V vs. Li+/Li) than graphite electrode (~0.1 V vs. Li+/Li). Therefore, TiO2 has good capacity retention during cycling and prevent the formation of a passive layer known as the SEI (solid electrolyte interface) layer. A series of anatase TiO2 nanocrystals with different particle sizes (60, 150, and 300 nm) exhibited stable cycle performance. And, the particle size dependence may be ascribed to the surface morphology in surface layer of TiO2 nanosized particles. |
| 저자 |
엄지현1, 임주현2, 이진규2, 성영은1
|
| 소속 |
1Seoul National Univ. / Institute for Basic Science (IBS), 2Seoul National Univ. |
| 키워드 |
Titanium oxide; Particle size; Anode; Li-ion batteries
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| E-Mail |
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