화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.29, 408-413, September, 2015
DOI10.1016/j.jiec.2015.04.022  Export Citation
Effect of manganese dioxide on supercapacitive behaviors of petroleum pitch-based carbons
Jung-Yun Choi, and Soo-Jin Park†
  • Department of Chemistry, Inha University, 100 Inharo, Incheon 402-751, Republic of Korea
E-mail:
Petroleum pitch is activated with KOH, and different concentrations of MnO2 nanoparticles are impregnated on petroleum pitch-based activated carbons with a simple chemical reaction. Fiber-like MnO2 is successfully grown on the surface of the activated carbons. The specific capacitance of A-PP-0.02 is 92 F/g in 0.5 M Na2SO4. This increase is due to the appropriate combination of the pore structure and MnO2 that allows electrolyte ions to easily reach the electrode. The results indicate that MnO2 is a promising metal oxide for increasing the specific capacitance of petroleum pitch-based activated carbons and can overcome the low energy density.
Keywords:Petroleum pitch;Manganese dioxide nanoparticles;Electrochemical performance
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