| 학회 | 한국화학공학회 |
| 학술대회 | 2012년 가을 (10/24 ~ 10/26, 부산 BEXCO) |
| 권호 | 18권 2호, p.2478 |
| 발표분야 | 촉매 및 반응공학 |
| 제목 | Silicon incorporated mesoporous SnO2 anode for high energy Li ion secondary batteries |
| 초록 | High energy batteries are important for the development of high performance portable devices and electric vehicles. Si and SnO2 are one of the most promising high energy anode materials because it is well known theoretical capacity of 4200mAh/g and 780mAh/g, respectively which is much higher than capacity of graphite (372mAh/g). However these Li alloyed materials suffer from significant volume change during alloying and de-alloying process and this causes cracking and pulverization of anode, which leads to loss of electrical contact and fading of capacity. In this report, we present silicon incorporated mesoporous SnO2 electrode material as a high energy anode for Li ion secondary batteries. Mesoporous structure that have nano-sized pores separated by walls attributes to enhance the transfer of Li ions and reduce the diffusing resistance of the electrode. Silicon incorporated mesoporous SnO2 was prepared using silicon nano-particle contained KIT-6 silica template via nano-replication method. Silicon species are in the range of 15-40 wt%, which induce high capacity. Well-defined meso pores in the silicon incorporated mesoporous SnO2 also accommodate volume changes during the Li alloy and dealloy process. |
| 저자 | 장윤정, 박귀옥, 김지만 |
| 소속 | 성균관대 |
| 키워드 | Silicon; Li ion batteries; Tin oxide; mesoporous |
| 원문파일 | 초록 보기 |
