Thermoelectric Properties of Non-Stoichiometric Titanium Dioxide TiO2-x Fabricated by Reduction Treatment Using Carbon Powder

• Lu Yun

  Faculty of Engineering, Chiba University

• Hirohashi Mitsuji

  Faculty of Engineering, Chiba University

• Sato Kenkichi

  Faculty of Engineering, Chiba University

書誌事項

タイトル別名

• Thermoelectric Properties of Non-Stoichiometric Titanium Dioxide TiO<SUB>2−<I>x</I></SUB> Fabricated by Reduction Treatment Using Carbon Powder
• Thermoelectric Properties of Non-Stoichiometric Titanium Dioxide TiO<SUB>2&minus;<I>x</I></SUB> Fabricated by Reduction Treatment Using Carbon Powder

抄録

A reduction treatment using carbon powder for reducing TiO₂ to fabricate non-stoichiometric titanium dioxide, TiO_2−x, was proposed and performed. The carrier density and non-stoichiometric number were calculated by using thermogravimetry (TG) while heating and re-oxidizing TiO_2−x in air. The thermoelectric properties of TiO_2−x were measured and evaluated in air. The results show that TiO_2−x can be simply and safely obtained by reducing insulating TiO₂ through the proposed reduction treatment. The carrier density increases and non-stoichiometric number decrease with the temperature of the reduction treatment and have a good correspondence with the decrease in the electrical resistivity of TiO_2−x. Significantly improved thermoelectric properties were observed as a consequence of the decreasing electrical resistivity of TiO_2−x.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 47 (6), 1449-1452, 2006

  公益社団法人 日本金属学会

キーワード

• titanium dioxide
• reduction treatment
• carbon powder
• non-stoichiometric oxide
• non-stoichiometic number
• thermoelectric properties

詳細情報

• CRID: 1390282679227443328
• NII論文ID: 130004453152
• NII論文ID: 10018160203
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.47.1449
• COI: 1:CAS:528:DC%2BD28XotlaktL8%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 7950582
• Web Site: http://id.ndl.go.jp/bib/7950582
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7950582
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/47/6/47_6_1449/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可