11840
This heterostructured nanomaterial exhibits enhanced electrochemical cycling performance with the decreases of capacity fading during 200 cycles from 0 . 557 to 0 . 173 % over V ( 2 ) O ( 5 ) nanowires at the current density of 100 mA / g .
 V ( 2 ) O ( 5 )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 V ( 2 ) O ( 5 )