Durability of titanium-niobium oxides mixed with ti4o7 as non-preciousand carbon-free cathodes for PEFCs in H2SO4 at 80°C

Makoto Hamazaki, Akimitsu Ishihara, Yuji Kohno, Koichi Matsuzawa, Shigenori Mitsushima, Ken Ichiro Ota

Abstract

To develop durable cathodes, their durability in acidic media at 80°C, which is close to the operation temperature of present polymer electrolyte fuel cells, must be evaluated. We attempted to use a Ti4O7 rod as the substrate, and it was observed to be more suitable than a glassy carbon rod because of its higher electrochemical stability. We evaluated the durability of titanium-niobium oxides mixed with Ti4O7 powder (TixNbyOz+Ti4O7) as a non-preciousand carbon-free cathode in 0.1 mol dm?3 H2SO4 at 80°C. We successfully demonstrated that the TixNbyOz+Ti4O7 did not deteriorate during start-stop and load cycle tests when a Ti4O7 rod substrate was employed.

Original languageEnglish
Pages (from-to)817-819
Number of pages3
JournalElectrochemistry
Volume83
Issue number10
DOIs
StatePublished - 2015

Fingerprint

Durability
Cathodes
Niobium oxide
Titanium
Carbon
Substrates
Glassy carbon
Fuel cells
Electrolytes
Powders
Polymers
Temperature

Keywords

  • Durability
  • Non-precious-and Carbon-free Cathodes
  • Polymer Electrolyte Fuel Cell
  • Titanium-niobium Oxides

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Durability of titanium-niobium oxides mixed with ti4o7 as non-preciousand carbon-free cathodes for PEFCs in H2SO4 at 80°C. / Hamazaki, Makoto; Ishihara, Akimitsu; Kohno, Yuji; Matsuzawa, Koichi; Mitsushima, Shigenori; Ota, Ken Ichiro.

In: Electrochemistry, Vol. 83, No. 10, 2015, p. 817-819.

Research output: Contribution to journalArticle

Hamazaki, Makoto; Ishihara, Akimitsu; Kohno, Yuji; Matsuzawa, Koichi; Mitsushima, Shigenori; Ota, Ken Ichiro / Durability of titanium-niobium oxides mixed with ti4o7 as non-preciousand carbon-free cathodes for PEFCs in H2SO4 at 80°C.

In: Electrochemistry, Vol. 83, No. 10, 2015, p. 817-819.

Research output: Contribution to journalArticle

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AU - Hamazaki,Makoto

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AU - Kohno,Yuji

AU - Matsuzawa,Koichi

AU - Mitsushima,Shigenori

AU - Ota,Ken Ichiro

PY - 2015

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AB - To develop durable cathodes, their durability in acidic media at 80°C, which is close to the operation temperature of present polymer electrolyte fuel cells, must be evaluated. We attempted to use a Ti4O7 rod as the substrate, and it was observed to be more suitable than a glassy carbon rod because of its higher electrochemical stability. We evaluated the durability of titanium-niobium oxides mixed with Ti4O7 powder (TixNbyOz+Ti4O7) as a non-preciousand carbon-free cathode in 0.1 mol dm?3 H2SO4 at 80°C. We successfully demonstrated that the TixNbyOz+Ti4O7 did not deteriorate during start-stop and load cycle tests when a Ti4O7 rod substrate was employed.

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KW - Titanium-niobium Oxides

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