Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 45, Pages 39371-39379Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b11721
Keywords
silicon; graphene; anode material; lithium-ion batteries; sandwich-like structure
Funding
- National Science Foundation of China [51472086, 51572007, 51622203, 51002051]
- Recruitment Program of Global Experts
- Fundamental Research Funds for the Central Universities [YWF-16-BJ-Y-12]
- CAS Key Laboratory of Carbon Materials [KLCMKFJJ1703]
Ask authors/readers for more resources
A novel two-dimensional porous sandwich-like Si/carbon nanosheet is designed and successfully fabricated as an anode for superior lithium storage, where a porous Si nanofilm grows on the two sides of reduced graphene oxide (rGO) and is then coated with a carbon layer (denoted as C/Si-rGO-Si/C). The coexistence of micropores and mesopores in C/Si-rGO-Si/C nanosheets offers a rapid Li+ diffusion rate, and the porous Si provides a short pathway for electric transportation. Meanwhile, the coated carbon layer not only can promote to form a stable SEI layer, but also can improve the electric conductivity of nanoscale Si coupled with rGO. Thus, the unique nanostructures offer the resultant C/Si-rGO-Si/C electrode with high reversible capacity (1187 mA h g(-1) after 200 cycles at 0.2 A g(-1)), excellent cycle stability (894 mA h g(-1) after 1000 cycles at 1 A g(-1)), and high rate capability (694 mA h g(-1) at 5 A g(-1), 447 mA h g(-1) at 10 A g(-1)).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available