24934
Either the Li metal or Li ions ( by the formation LixC6 or Li4 + xTi5O12 ) was harvested from waste Li ion source materials such as a waste anode ( LixC6 ) , cathode ( LixFePO4 ) , and electrolyte ( LiPF6 in EC : DEC ) by charging the cell , which then discharged with the waste products in the liquid cathode solution to produce electric energy .
 Chemical: Li; Chemical: Li; Chemical: LixC6; Chemical: Li4 + xTi5O12; Chemical: Li; Chemical: LixC6; Chemical: LixFePO4; Chemical: LiPF6
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: Li; Chemical: Li; Chemical: LixC6; Chemical: Li4 + xTi5O12; Chemical: Li; Chemical: LixC6; Chemical: LixFePO4; Chemical: LiPF6