Journal
JOURNAL OF NANOMATERIALS
Volume 2014, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2014/139639
Keywords
-
Funding
- National Natural Science Foundation of China [51232005]
- 973 program of China [2014CB932401]
- Ministry of Science and Technology (MOST) of China [2010DFA72760]
Ask authors/readers for more resources
Silicon-encapsulated hollow carbon nanofiber networks with ample space around the Si nanoparticles (hollow Si/C composites) were successfully synthesized by dip-coating phenolic resin onto the surface of electrospun Si/PVA nanofibers along with the subsequent solidification and carbonization. More importantly, the structure and Si content of hollow Si/C composite nanofibers can be effectively tuned by merely varying the concentration of dip solution. As-synthesized hollow Si/C composites show excellent electrochemical performance when they are used as binder-free anodes for Li-ion batteries (LIBs). In particular, when the concentration of resol/ethanol solution is 3.0%, the product exhibits a large capacity of 841 mAh g(-1) in the first cycle, prominent cycling stability, and good rate capability. The discharge capacity retention of it was similar to 90%, with 745 mAh g(-1) after 50 cycles. The results demonstrate that the hollow Si/C composites are very promising as alternative anode candidates for high-performance LIBs.
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