8157
Decreasing the thickness of the Fe layer can lead to a higher capacity , which is related to the fast transport of the Li ion , but the cyclic performance deteriorates with repeated cycling .
 Chemical: Fe; Chemical: Li
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Fe; Chemical: Li