The Sn-red P-Fe-based alloy materials for efficient Li-ion battery anodes
- Authors
- Lim, Ye Eun; Choi, Woo Seok; Kim, Jae Hoon; Ahn, Yong Nam; Kim, Il Tae
- Issue Date
- May-2023
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Alleviated volume change; Buffer matrix; Inactive Fe; Li-ion battery anodes; Long cyclability; Sn–red P–Fe alloys
- Citation
- Journal of Industrial and Engineering Chemistry, v.121, pp 299 - 311
- Pages
- 13
- Journal Title
- Journal of Industrial and Engineering Chemistry
- Volume
- 121
- Start Page
- 299
- End Page
- 311
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/87438
- DOI
- 10.1016/j.jiec.2023.01.033
- ISSN
- 1226-086X
1876-794X
- Abstract
- Li-ion batteries (LIBs) have attracted significant research attention owing to interest in electric vehicles and energy storage systems. Numerous cathode materials have been developed and commercialized. However, graphite-based materials with low reversible capacity are still used as LIB anodes. This imbalance in development diminishes performance of LIBs. In this study, active (Sn–red P)/inactive (Fe) (Sn–red P–Fe) composite materials were developed from a high-energy ball milling technique and were used as high-capacity LIB anodes. The electrochemical characteristics of the FeSn2/P(3:1)@C and FeSn2/P(3:2)@C composites were analyzed, and the results demonstrated their notable performance as LIB anodes. In particular, the FeSn2/P(3:1)@C anode presented an average reversible capacity of 704 mAh/g at 0.5 A/g, and excellent capacity retention of 93% after 200 cycles. To further analyze the electrochemical reactions and Li+ ion diffusion mechanism of the as-assembled LIBs, CV and EIS analyses were performed. The remarkable performance of the FeSn2/P(3:1)@C anode were attributed to the C buffer matrix, which prevented the aggregation of Sn, conductive Fe formation, and predominant pseudocapacitive reaction. Therefore, it is expected that the FeSn2/P(3:1)@C composite can be a viable anode material for LIBs. © 2023 The Korean Society of Industrial and Engineering Chemistry
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