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The unique wetness - resistant adhesion provided by the catechol groups allows the silicon nanoparticle electrodes to maintain their structure throughout the repeated volume expansion and shrinkage during lithiation cycling , thus facilitating substantially improved specific capacities and cycle lives of lithium - ion batteries .
 Chemical: catechol; Chemical: silicon; 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: catechol; Chemical: silicon; Chemical: lithium