| 학회 | 한국공업화학회 |
| 학술대회 | 2014년 가을 (11/12 ~ 11/14, 엑스코(대구)) |
| 권호 | 18권 2호 |
| 발표분야 | 에너지저장변환-포스터 |
| 제목 | Synthesis and electrochemical properties of CNFs-Si composites as an anode material for Li secondary batteries |
| 초록 | We have performed a study on the electrochemical and structural characteristics of CNFs-Si composites which are an active anode material for lithium secondary batteries. Carbon nanofibers(CNFs) have been synthesized by Chemical Vapor Deposition(CVD) using Co and Cu catalysts. The CNFs on the surface of Si particle can provide flexible space to relieve volumetric expansion during charge. Therefore, the CNFs composites on Si particles were prepared on the basis of following 2 processes; Sample 1: CNFs were grown on the simple mechanical mixture of Si particle and catalysts(CNFs/Si). Sample 2: CNFs were grown on the surface of pyrolytic carbon coated Si particles(CNFs/PC/Si). The characteristics of CNFs-Si composites were analyzed by SEM, EDS, XRD, Raman and XPS. The two different CNFs-Si composite materials were evaluated as the anodic material in three electrode cells. CNFs/PC/Si composite achieved the largest amount of discharge capacity of 620mAh/g and improved cycle-ability with the retention rate of 62.4 % after 25th cycle. Acknowledgement: This research was financially supported by the Ministry of Education (MOE) and National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation (NO. 2012026209). |
| 저자 | 박은실, 박희구, 이창섭 |
| 소속 | 계명대 |
| 키워드 | Carbon nanofiber; Li secondary batteries |
