Design of an "allsolid-state'' supercapacitor based on phosphoric acid doped polybenzimidazole (PBI) electrolyte

作者：Rathod Dhanraj; Vijay Meenu; Islam Nazrul; Kannan Ramaiyan; Kharul Ulhas; Kurungot Sreekumar; Pillai Vijayamohanan^*

来源：Journal of Applied Electrochemistry, 2009, 39(7): 1097-1103.

DOI：10.1007/s10800-008-9764-3

• RuO(2)/carbon composite
• PBI electrolyte
• Electrochemical supercapacitor
• Energy storage device
• Electrochemical characterization

The effectiveness of phosphoric acid doped polybenzimidazole as a polymer electrolyte membrane to fabricate an all solid-state super capacitor has been explored using hydrous RuO(2)/carbon composite electrodes (20 wt.%) of surface area 250 m(2) g(-1) with many intrinsic advantages. The electrochemical evaluation of these super capacitors through cyclic voltammetry, charge/discharge and impedance measurements demonstrate the utility of this type of thin, compact and flexible supercapacitor capable of functioning at 150 degrees C to yield a maximum capacitance of about 290 F g(-1) along with a life of more than 1,000 cycles. A power density of 300 W kg(-1) and energy density of 10 Wh kg(-1) have been accomplished although the equivalent series resistance (ESR) of about 3.7 Omega needs to be reduced further for high rated applications.

• 出版日期2009-7