Vertically aligned Ta3N5 nanorod arrays for solar-driven photoelectrochemical water splitting

Yanbo Li, Tsuyoshi Takata, Dong Kyu Cha, Kazuhiro Takanabe, Tsutomu Minegishi, Jun Kubota, Kazunari Domen

Research output: Contribution to journalArticlepeer-review

361 Scopus citations

Abstract

A vertically aligned Ta3N5 nanorod photoelectrode is fabricated by through-mask anodization and nitridation for water splitting. The Ta3N5 nanorods, working as photoanodes of a photoelectrochemical cell, yield a high photocurrent density of 3.8 mA cm -2 at 1.23 V versus a reversible hydrogen electrode under AM 1.5G simulated sunlight and an incident photon-to-current conversion efficiency of 41.3% at 440 nm, one of the highest activities reported for photoanodes so far. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish (US)
Pages (from-to)125-131
Number of pages7
JournalAdvanced Materials
Volume25
Issue number1
DOIs
StatePublished - Sep 18 2012

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported in part by a Grant-in-Aid for Specially Promoted Research (23000009) from Japan Society for the Promotion of Science (JSPS) and the Advanced Low Carbon Technology Research and Development Program (ALCA) of the Japan Science and Technology Agency (JST). This work was also carried out under the international exchange program of the A3 Foresight Program of JSPS. The author Li acknowledges support from JSPS as a postdoctoral fellow. The authors thank Prof. Shigeo Maruyama, Prof. Reo Kometani, and Dr. Miao Zhong for SEM characterization.

ASJC Scopus subject areas

  • Mechanics of Materials
  • General Materials Science
  • Mechanical Engineering

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