Double-Shelled Nanocapsules of V2O5-Based Composites as High-Performance Anode and Cathode Materials for Li Ion Batteries
Citations Over TimeTop 1% of 2009 papers
Abstract
Double-shelled nanocapsules of V(2)O(5)-SnO(2) composites were chemically assembled via a one-pot solution method. These hollow nanocapsules are composed of a double-shelled V(2)O(5) matrix that includes a low weight ratio of SnO(2) (e.g., 10 or 15%). In these double shells, open-structured V(2)O(5) acts as not only a supporting matrix but also an active electrode component. The gap between the two shells and the hollow cavity provide sufficient space for volume variation during conversion reactions and lithium alloying/dealloying processes. As a promising anode electrode, this nanocomposite shows a large, reversible capacity of 947 mA h g(-1) at a rate of 250 mA g(-1) and retains a high capacity of 673 mA h g(-1) after 50 cycles. Even at a high rate of 2500 mA g(-1), the current nanocomposite electrode can still deliver a reversible capacity of 505 mA h g(-1). As a cathode electrode, our nanocomposite shows not only a high reversible capacity of approximately 250 mA h g(-1) but also good cycling and rate capability.
Related Papers
- → Chitosan nanocapsules: a new carrier for nasal peptide delivery(2006)59 cited
- → Safety profile and cellular uptake of biotemplated nanocapsules with nanometre-thin walls(2011)8 cited
- Properties of Aroma Sustained-release Cotton Fabric with Rose Fragrance Nanocapsule(2011)
- Development and Properties of Temperature-sensitive Poly(N-isopropylacrylamide) Nanocapsules(2012)
- Magnetic and Microwave-absorption Properties of Graphite-coated （Fe, Ni） Nanocapsules(2011)