Photoelectrochemical cells using metal-decorated carbon nanotube electrodes

Chang Ho Kim, Sung Sic Hwang, Jihun Kim, Kyung Hwa Yoo

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6 Citations (Scopus)

Abstract

We fabricated the photoelectrochemical (PEC) cells using n-type TiO2 and metal (Pt, Pd)-decorated carbon nanotubes (CNTs) as an anode and a cathode, respectively. Photovoltaic effects were clearly observed. Compared with conventional PEC cell with Pt cathode, a larger photo-voltage was found in the PEC cells with the metal-decorated CNT cathode due to p-type semiconducting properties of CNTs. Additionally, we connected two PEC cells in series to decompose water into oxygen and hydrogen. Indeed, the connected PEC cells yielded the photo-voltage of about 1.35 V, which is larger than 1.23 V required for water splitting. This result demonstrates the possibility of hydrogen generation using the connected PEC cells without an external bias.

Original languageEnglish
Pages (from-to)153-157
Number of pages5
JournalCurrent Applied Physics
Volume10
Issue number1
DOIs
Publication statusPublished - 2010 Jan 1

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)

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