26735
Well - separated RGO sheets decorated with MnO2 nanoparticles facilitate easy access of the electrolyte ions to the high surface area of the paper electrode , enabling fabrication of thicker electrode with heavier areal mass and higher areal capacitance ( up to 897 mF cm ( - 2 ) ) .
 MnO2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 MnO2