7086
Much work has been focused on aprotic Li - O ( 2 ) cells ( mostly with carbonate - based electrolytes and Li ( 2 ) O ( 2 ) as a potential discharge product ) , where large overpotentials are observed and a complex cell chemistry is found .
 Chemical: Li - O ( 2 ); Chemical: carbonate; Chemical: Li ( 2 ) O ( 2 )
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 - O ( 2 ); Chemical: carbonate; Chemical: Li ( 2 ) O ( 2 )