Hierarchical Porous Carbon/MnO2 Hybrids as Supercapacitor Electrodes

作者：Lee Min Eui; Yun Young Soo; Jin Hyoung Joon^*

来源：Journal of Nanoscience and Nanotechnology, 2014, 14(12): 9178-9181.

DOI：10.1166/jnn.2014.10086

• Porous Carbons
• Manganese Oxide
• Hybrids
• Supercapacitor

Hybrid electrodes of hierarchical porous carbon (H PC) and manganese oxide (MnO2) were synthesized using a fast surface redox reaction of potassium permanganate under facile immersion methods. The HPC/MnO2 hybrids had a number of micropores and macropores and the MnO2 nanoparticles acted as a pseudocapacitive material. The synergistic effects of electric double-layer capacitor (EDLC)-induced capacitance and pseudocapacitance brought about a better electrochemical performance of the HPC/MnO2 hybrid electrodes compared to that obtained with a single component. The hybrids showed a specific capacitance of 228 F g(-1) and good cycle stability over 1000 cycles.

• 出版日期2014-12