8155
A buffer - strengthened Si / Fe multilayer film , consisting of amorphous silicon layers and polycrystalline Fe layers , is investigated as the anode for Li - ion batteries .
 Chemical: Si; Chemical: Fe; Chemical: silicon; 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: Si; Chemical: Fe; Chemical: silicon; Chemical: Fe; Chemical: Li