5965
However , the complex mechanisms of conduction through these materials , both in their pure state and in the presence of a small amount of a second component ( such as lithium salts to enable their use in lithium batteries ) are still not fully understood .
 Chemical: lithium; Chemical: lithium
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: lithium; Chemical: lithium