29440
Electrochemical results demonstrate that the reversible capacity of the composite anode is 1110 mA h g ( - 1 ) at a current rate of 158 mA g ( - 1 ) with only 31 % of initial irreversible capacity in the first cycle .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None