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

doi:10.1021/acs.jpcc.5b00788

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

School of Electrical Engineering

Research output: Contribution to journal › Article

3 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 TiO<inf>2</inf> nanopowders to prepare a spray-coatable OMWNT-TiO<inf>2</inf> 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 language	English
Pages (from-to)	9085-9091
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	119
Issue number	17
DOIs	https://doi.org/10.1021/acs.jpcc.5b00788
Publication status	Published - 2015 Apr 30

ASJC Scopus subject areas

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

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Rhee, Y. H., Lee, C. J., Ko, M. J., Jin, J. H., & Min, N. K. (2015). Enhancing the efficiency of electron conduction in spray-coated anode of photoelectrochemical cell using oOxygenated multi-walled carbon nanotubes. Journal of Physical Chemistry C, 119(17), 9085-9091. https://doi.org/10.1021/acs.jpcc.5b00788

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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.",

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