Electronic Structure of a Polybenzimidazole-Wrapped Single-Wall Carbon Nanotube

Kulbir K. Ghuman, Tsuyohiko Fujigaya

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    Polymer wrapping on a carbon nanotube (CNT) surface by polybenzimidazoles (PBIs) allows us to immobilize platinum nanoparticles on pristine CNTs and to use it as the electrocatalyst of polymer electrolyte membrane fuel cells (PEMFCs), thereby improving the durability of PEMFCs. In this work, for the first time, we present the fundamental insights into the electronic structure and the interaction present in the single-wall CNT (SWCNT) and PBI composite through comprehensive theoretical study supported by experiments. Our analyses predict that PBI possesses stable helical wrapping around SWCNT because of the strong noncovalent π-π interaction between them, in which PBI participates more than SWCNTs. It is also found that the functionalization of SWCNTs by PBI is independent of the SWCNT chiralities and that the functionalization does not affect the intrinsic properties of SWCNTs, making the SWCNT/PBI-based membrane electrode assembly a good candidate for high-performance PEMFCs.

    Original languageEnglish
    Pages (from-to)15979-15985
    Number of pages7
    JournalJournal of Physical Chemistry C
    Volume122
    Issue number28
    DOIs
    Publication statusPublished - Jul 19 2018

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Energy(all)
    • Physical and Theoretical Chemistry
    • Surfaces, Coatings and Films

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