Influence of oCVD Polyaniline Film Chemistry in Carbon-Based Supercapacitors

Yuriy Y. Smolin, Masoud Soroush, Kenneth K.S. Lau

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Polyaniline (PANI) is integrated into Mo2C carbide-derived-carbon (CDC) electrodes using the single-step, solvent-free process of oxidative chemical vapor deposition (oCVD). By optimizing the oCVD processing conditions, CDC electrodes integrated with oCVD PANI exhibit more than double the gravimetric capacitance (115 F/g) vs bare CDC electrodes (52 F/g) and a 79% capacity retention after over 10 000 cycles. The oxidant flow rate, substrate temperature, and reactor pressure were varied, and their influence on film chemistry and supercapacitor performance was explored electrochemically and with FTIR and XPS. The study reveals that a higher substrate temperature, pressure, and oxidant flow rate are critical for depositing emeraldine PANI for optimal electrochemical performance. Interestingly, the optimally performing PANI-CDC devices have a porous PANI morphology as determined by SEM, which may facilitate ion transport, improve scan rate performance, and impart electric double layer capacitance in addition to the intrinsic Faradaic pseudocapacitance.

Original languageEnglish (US)
Pages (from-to)6221-6228
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume56
Issue number21
DOIs
StatePublished - May 31 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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