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Cover Image, Volume 128, Issue 3
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38675
Subject(s) - cover (algebra) , polypyrrole , supercapacitor , electrode , pyrrole , volume (thermodynamics) , analytical chemistry (journal) , materials science , polymer science , chemistry , physics , nanotechnology , capacitance , electrochemistry , chromatography , organic chemistry , mechanical engineering , thermodynamics , engineering
The cover picture shows a SEM image of polypyrrole (PPY) as presented on page 1327 by Ai‐Qin Zhang, Yuan‐Hua Xiao, Ling‐Zhen Lu, Li‐Zhen Wang, and Feng Li. The synthesis of PPY is carried out at a constant temperature of 0°C. First, FeCl 3 (oxidant) is dissolved in 1 mol/L HCl. Second, after 1 hour of stirring, pyrrole is added into the solution. Finally, the precipitates are separated by filtration, rinsed with 0.01 mol/L HCl, water, and acetone three times each, and dried at 60°C in a vacuum oven. The specific capacitance of the PPY electrode is 246.2 F/g at a current of 8 mA/cm 2 when used as the electrode material of a supercapacitor.