Enhancing the efficiency of electron conduction in spray-coated anode of photoelectrochemical cell using oOxygenated multi-walled carbon nanotubes

Yong Hoon Rhee, Cheol Jin Lee, Min Jae Ko, Joon Hyung Jin, Nam Ki Min

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A multiwalled carbon nanotube (MWNT) was physically cured with oxygen plasma treatment, and the as-prepared oxygenated MWNT (OMWNT) was incorporated into TiO2 nanopowders to prepare a spray-coatable OMWNT-TiO2 composite suspension. The composite layer was directly formed on a fluorinated tin oxide surface by spray coating and served as a photoanode of a photoelectrochemical cell (PEC). The cell performance was optimized in terms of the plasma treatment time and compared with a conventional PEC, showing 37% increased energy conversion efficiency. The efficiency improvement confirmed by the electrochemical impedance spectra was related to the reduced charge-transfer resistance and efficient electron transport through the OMWNT network.

Original languageEnglish
Pages (from-to)9085-9091
Number of pages7
JournalJournal of Physical Chemistry C
Volume119
Issue number17
DOIs
Publication statusPublished - 2015 Apr 30

ASJC Scopus subject areas

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

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