rutile (Lab¼5 nm).
Nanometer-sized electrode materials may not only increase
the electroactivity towards Li insertion but also enhance the
high rate capability (high power), as has been observed for
many anode materials. The high rate capability results directly
from the transport advantages of the fine particle size, such as
shorter transport distances for both e and Liþ transport as
well as a larger electrode/electrolyte contact area resulting