Anodically Deposited Mn-Mo-Fe Oxide Anodes for Oxygen Evolution in Hot Seawater Electrolysis

• Ghany Nabil A. Abdel

  Tohoku Institute of Technology

• Meguro Shinsaku

  Tohoku Institute of Technology

• Kumagai Naokazu

  Daiki Engineering Co. Ltd.

• Asami Katsuhiko

  Institute for Materials Research, Tohoku University

• Hashimoto Koji

  Tohoku Institute of Technology

抄録

In order to avoid chlorine evolution on the anode in hot seawater electrolysis, the oxygen evolution anodes were tailored. γ-MnO₂-type Mn_1−x−yMo_xFe_yO_2+x−0.5y anodes consisting of Mn⁴⁺, Mo⁶⁺ and Fe³⁺ were prepared by anodic deposition. The anodes with the 100% oxygen evolution efficiency in the electrolysis of 0.5 kmol m⁻³ NaCl at pH 12, 353 K and a current density of 1000 Am⁻² were prepared in solutions consisting of 0.003 kmol m⁻³ Na₂MoO₄, 0.1 kmol m⁻³ Fe(NH₄)(SO₄)₂ and 0.2 kmol m⁻³ or higher concentrations of MnSO₄ at pH 0.33-0.5, 363 K and a current density of 600 Am⁻². In the outside of this range, generally because of lower deposition efficiency, the electrode surface was not completely covered with anodically deposited oxides with a consequent lower oxygen evolution efficiency.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 44 (10), 2114-2123, 2003

  公益社団法人 日本金属学会

キーワード

• anode
• manganese-molybdenum-iron oxide
• 100% oxygen evolution efficiency
• deposition efficiency

詳細情報

• CRID: 1390282679225046144
• NII論文ID: 10011916014
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.44.2114
• COI: 1:CAS:528:DC%2BD3sXptFOns7Y%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6722290
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6722290
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/44/10/44_10_2114/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可