24330
The use of non - woven fibrous membranes instead of conventional microporous membranes as the composite substrates allowed better distribution of the electroactive polymer , which led to improved utilization and a 40 - fold increase in sustainable current density .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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