Journal
APPLIED SURFACE SCIENCE
Volume 503, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.144069
Keywords
Porous carbon; Nitrogen; Counter electrode; Dye-sensitized solar cells; Supercapacitors
Categories
Funding
- Indian Institute of Technology Madras
- Government of India
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Nitrogen-containing conducing polymer-derived porous carbons are attracting vast interest in energy applications. However, polymer-derived porous carbons are limited by low electrical conductivity. Here, we report a highly conducive nitrogen-containing activated porous carbon nanostructure (PNAC) derived from poly (paraphenylenediamine), which is an aromatic diamine polymer. PNAC exhibits high electrical conductivity of 624 S/m that is significantly higher than activated graphene and commercial activated carbons. The porous carbon displays hierarchical pore architecture with high nitrogen content of 6.02 atomic %. PNAC was fabricated for counter electrode application in dye-sensitized solar cells. The electrocatalytic and photovoltaic study of the PNAC counter electrode displays power conversion efficiency similar to 6.14% which is as good as the standard platinum counter electrode. The material was also fabricated as electrodes for supercapacitors and their electrochemical performance was studied using two-electrode symmetric cell configuration. PNAC demonstrates high specific capacitance of 162 F/g in 1M H2SO4 electrolyte at 1 A/g, high rate capability and excellent cycling stability.
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