Fabrication of Co/P25 coated with thin nitrogen-doped carbon shells (Co/P25/NC) as an efficient electrocatalyst for oxygen reduction reaction (ORR)

Koji Miyake, Toshiki Takemura, Atsushi Gabe, Yexin Zhu, Misaki Ota, Yasuhiro Shu, Yuichiro Hirota, Yoshiaki Uchida, Shunsuke Tanaka, Misaki Katayama, Yasuhiro Inada, Emilia Morallón, Diego Cazorla-Amorós, Norikazu Nishiyama

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Development of electrocatalysts for oxygen reduction reaction (ORR) is important to solve the current problems about energy and fuel. As one of the catalysts with high performance, platina group metals (PGM) based catalysts have been widely known. However, PGM based catalysts are not suitable for large commercial application since the PGM based catalysts are so expensive. In this work, we have developed TiO2 P25 coated with Co and nitrogen-doped carbon layers using commercially available and inexpensive P25 as a support (Co/P25/NC) as one of the alternatives to PGM based catalysts. Co/P25/NC showed an excellent catalytic activity on ORR compared to the other catalysts prepared using SiO2, ZrO2 and Al2O3 as a support. The ORR activity of Co/P25/NC was comparable to Pt based electrocatalysts. In addition, Co/P25/NC showed excellent durability and tolerance toward methanol compared to the Pt based catalyst. This work would provide a new synthetic strategy of electrocatalysts.

Original languageEnglish
Pages (from-to)867-873
Number of pages7
JournalElectrochimica Acta
Volume296
DOIs
Publication statusPublished - 2019 Feb 10
Externally publishedYes

Keywords

  • CVD
  • CoNx
  • Core-shell
  • ORR
  • P25

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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  • Cite this

    Miyake, K., Takemura, T., Gabe, A., Zhu, Y., Ota, M., Shu, Y., Hirota, Y., Uchida, Y., Tanaka, S., Katayama, M., Inada, Y., Morallón, E., Cazorla-Amorós, D., & Nishiyama, N. (2019). Fabrication of Co/P25 coated with thin nitrogen-doped carbon shells (Co/P25/NC) as an efficient electrocatalyst for oxygen reduction reaction (ORR). Electrochimica Acta, 296, 867-873. https://doi.org/10.1016/j.electacta.2018.11.080