Jump to main content
Jump to site search


A peptide-based supercapacitor and its performance improvement via TiO2 coating

Author affiliations

Abstract

Based on their ability to self-assemble and mimic strategies that occur in nature, peptide nanomaterials offer a variety of potential applications in environmentally friendly energy storage technologies. Herein, we report the experimental investigations into an elaborate self-assembled dipeptide Fmoc-EF-NH2, which displayed good performance as an electrode material in a supercapacitor. In order to protect the peptide electrode from electrolyte dissolution, a thin layer of TiO2 was coated on the peptide film by atomic layer deposition. The as-prepared peptide electrodes achieved an outstanding mass-specific capacitance of 125 F g−1 at 0.1 A g−1 current density and an areal capacitance of 8.6 mF cm−2. Furthermore, the capacitor exhibits excellent stability, in that 95% of the capacitance was retained after 5000 cycles. Additionally, the fabricated all-solid-state SCs possess excellent mechanical flexibility. To the best of our knowledge, this is the first investigation that comprehensively assessed the electrochemical performance of peptide materials.

Graphical abstract: A peptide-based supercapacitor and its performance improvement via TiO2 coating

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Feb 2018, accepted on 28 Mar 2018 and first published on 29 Mar 2018


Article type: Paper
DOI: 10.1039/C8TA01102H
Citation: J. Mater. Chem. A, 2018, Advance Article
  •   Request permissions

    A peptide-based supercapacitor and its performance improvement via TiO2 coating

    K. Hu, C. Zheng, M. An, X. Ma and L. Wang, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C8TA01102H

Search articles by author

Spotlight

Advertisements