Journal
NANO LETTERS
Volume 11, Issue 10, Pages 4324-4328Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl202417c
Keywords
Lithium ion batteries; block copolymer; nanocoils; urchin-like structure; anode materials
Categories
Funding
- Converging Research Center [2011K000637]
- MKE/KEIT [KI001784]
- Korea Evaluation Institute of Industrial Technology (KEIT) [KI001784] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
We demonstrate a simple route for preparing Si/SiOx urchin-like structures in which Si/SiOx core-shell nanocoils protruded out from the surface of bulk Si, via high-temperature annealing of Pt-decorated Si powders. The carbon-coated urchin-like anodes with micro- and nanostructured composite exhibit a significantly improved electrochemical performance with a high specific capacity of 1600 mAh/g and a superior cycling performance of 70 cycles at a rate of 0.2 C due to the nanocoil conformation and SiOx buffer layer. More importantly, the composite results in a significantly enhanced the volumetric capacity with similar to 3780 mAh/cc, compared to bulk Si (similar to 2720 mAh/cc) after fully lithiation to 0 V.
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