Chemical Activation of Nitrogen-doped Carbon Derived from Chitosan with ZnCl₂ to Produce a High-performance Gas Diffusion-type Oxygen Electrode

• OKUDA Ryunosuke

  Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

• NAKANO Kota

  Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

• SUEMATSU Koichi

  Department of Advanced Materials Science and Engineering, Faculty of Engineering Science, Kyushu University

• WATANABE Ken

  Department of Advanced Materials Science and Engineering, Faculty of Engineering Science, Kyushu University

• ILNICKA Anna

  Faculty of Chemistry, Nicolaus Copernicus University

• ŁUKASZEWICZ Jerzy P.

  Faculty of Chemistry, Nicolaus Copernicus University

• SHIMANOE Kengo

  Department of Advanced Materials Science and Engineering, Faculty of Engineering Science, Kyushu University

抄録

In this study, we fabricated nitrogen-doped carbons (NDCs) derived from chitosan using a new synthesis method that combines the thermal decomposition of chitosan and chemical activation with ZnCl₂. Then, the effect of the activation temperature on the microstructure of NDCs was investigated. The performance of a gas diffusion-type oxygen electrode (GDE) using the obtained NDCs was evaluated using an oxygen reduction reaction in an alkaline solution. Finally, the relationship between the microstructure of NDCs and electrode performance was discussed. The surface area and total pore volume of the fabricated NDCs tended to increase with activation temperature, despite decreasing nitrogen content. Additionally, we found that the overpotential of GDE decreases with an increase in specific surface area and total pore volume. The microstructure of the NDCs was found to play a key role in improving the performance of GDEs. Furthermore, the GDE composed of fabricated NDCs with a high surface area and high pore volume exhibited a reduced activation overpotential than that of conventional Pt-loaded carbon black.

収録刊行物

• Electrochemistry

  Electrochemistry 89 (1), 36-42, 2021-01-05

  公益社団法人　電気化学会

キーワード

• Oxygen Reduction Reaction
• Gas Diffusion-type Electrode
• Porous Carbon
• Nitrogen-doped Carbon

詳細情報

• CRID: 1391975831225664640
• NII論文ID: 130007965918
• DOI: 10.5796/electrochemistry.20-00121
• ISSN: 21862451
• ISSN: 13443542
• Web Site: https://www.jstage.jst.go.jp/article/electrochemistry/89/1/89_20-00121/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用可