Effect of Carbon Matrix on Electrochemical Performance of Si/C Composites for Use in Anodes of Lithium Secondary Batteries
- Authors
- Lee, Eun Hee; Jeong, Bo Ock; Jeong, Seong Hun; Kim, Tae Jeong; Kim, Yong Shin; Jung, Yongju
- Issue Date
- May-2013
- Publisher
- 대한화학회
- Keywords
- Li secondary battery; Si/C composite; Carbon matrix; Silicon
- Citation
- Bulletin of the Korean Chemical Society, v.34, no.5, pp.1435 - 1440
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Bulletin of the Korean Chemical Society
- Volume
- 34
- Number
- 5
- Start Page
- 1435
- End Page
- 1440
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/27999
- DOI
- 10.5012/bkcs.2013.34.5.1435
- ISSN
- 0253-2964
- Abstract
- To investigate the influence of the carbon matrix on the electrochemical performance of Si/C composites, four types of Si/C composites were prepared using graphite, petroleum coke, pitch and sucrose as carbon precursors. A ball mill was used to prepare Si/C blends from graphite and petroleum coke, whereas a dispersion technique was used to fabricate Si/C composites where Si was embedded in disordered carbon matrix derived from pitch or sucrose. The Si/pitch-based carbon composite showed superior Si utilization (96% in the first cycle) and excellent cycle retention (70% after 40 cycles), which was attributed to the effective encapsulation of Si and the buffering effect of the surrounding carbon matrix on the silicon particles.
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Collections - COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF CHEMICAL AND MOLECULAR ENGINEERING > 1. Journal Articles
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