| 학회 | 한국공업화학회 |
| 학술대회 | 2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 | 19권 1호 |
| 발표분야 | 전기화학_포스터 |
| 제목 | Improved performance of iron oxide nanoparticles embedded in nitrongen doped carbon for lithium ion battery anodes |
| 초록 | Efficient energy storage devices with an extended lifetime are required to meet the increasing energy demands in various fields such as electronics, as well as for renewable energy generation systems and electric vehicles. Lithium ion batteries (LIBs) have attracted great attention as one of the most dominant power sources because of their high power and energy densities. In commercial industry, graphite was used as lithium ion batteries anode. However, graphite already approaches very close to the limited theoretical capacity (372 mA h g-1) and graphite cannot satisfy the demand of high capacity storage. Therefore, many studies are focused on improving the specific capacity of LIB anode materials. Transition-metal oxides have been studied for use as anode materials due to their high specific capacity. Fe3O4 is one of them and the theoretical capacity is 924 mA h g-1. Nitrogen doping of carbonaceous materials has been studied as an effective way to improve the electrochemical performance. In particular, nitrogen doping of carbon-based materials allows for enhanced interaction with lithium ions and the creation of a great number of active sites. Fe3O4 was synthesized by particularly simple way and exhibited improved electrochemical performance when they were employed as anode materials for lithium ion batteries. Fe3O4 nanoparticles embedded in nitrogen doped carbon show the reversible capacity as high as 700 mA h g-1 over 100 cycles at current density of 200 mA h g-1 in lithium ion batteries applications. |
| 저자 | JINAIHUA1, 유승호2, 성영은3 |
| 소속 | 1School of Chemical and Biological Engineering, 2Seoul National Univ. / Conter for Nanoparticle Research, 3Institute for Basic Science |
| 키워드 | Lithium ion batteries; iron oxide; doping |
