Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 18, Pages 9186-9193Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am402702y
Keywords
polyaniline; thin film; conductive polymer solution; porous electrode; supercapacitor
Funding
- Center for Advanced Materials Processing under the 21C Frontier Programs of the Ministry of Knowledge Economy
- WCU (World Class University) program [R31-10013]
- Global Frontier R&D Program on Center for Multiscale Energy System
- National Research Foundation under the Ministry of Education, Science and Technology, Korea
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Enhancement to the electrochemical performance of supercapacitor electrodes were realized by incorporating highly porous conductive polymer films prepared with solution-processed polyaniline. The resultant nanostructures contained characteristic pores measuring 30-150 nm. Such electrodes generated from a solution of polyaniline-camphorsulfonic acid (PANI/CSA) exhibited higher porosity and electro-catalytic activity than those generated from conventional PANI nanomaterials. These improvements were attributed to faster ion diffusion at the PANI electrode/electrolyte interface. The highest specific capacitance observed for a supercapacitor fabricated with a porous PANI electrode obtained was 361 F g(-1) at 0.25 A g(-1), which is more than twice that of an equivalent electrode made with pristine PANI. Furthermore, supercapacitors made with highly porous PANI electrodes exhibited high electrochemical stability and rate performances.
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