九州大学学術情報リポジトリ
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カーボンナノチューブ燃料電池電極触媒実現のため の構造とプロセスの最適化の検討
ドン, テレンス, ダンミカ, ウイラツンガ
https://doi.org/10.15017/4060137
出版情報：Kyushu University, 2019, 博士（工学）, 課程博士 バージョン：
権利関係：
（様式２）
氏 名 ：Don Terrence Dhammika Weerathunga ドン テレンス ダンミカ ウイラツンガ
論 文 名 ：Optimization of structural and fabrication parameters of carbon nanotube-based Pt catalyst for highly durable polymer electrolyte fuel cell
(カーボンナノチューブ燃料電池電極触媒実現のための構造とプロセスの
最適化の検討)区 分 ：甲
論 文 内 容 の 要 旨
In Chapter 1, a background of the study, introduction about various carbon compounds with a short introduction to fuel cells electrocatalysts and the main challenges and strategy of the study will be given. Such as the importance of using an alternative catalyst support to carbon black like carbon nanotubes to improve the durability. Also the importance of our polymer (PBI) wrapping procedure where the oxidization of the carbon nanotubes to deposit Pt nano particles has been eliminated completely.
In Chapter 2, Characterizations of carbon nanotubes using transmission electron microscopy (TEM), Raman, X-ray photoelectron spectroscopy (XPS), gas adsorption measurements, thermogravimetric analysis (TGA) and X-ray diffraction spectroscopy (XPS) were given with procedure and characterization of polybenzimidazole (PBI) wrapping. Where single-walled nanotubes have a very small defect ratio (Raman) and having bundled structures compared to comparatively high defect ratio possessing isolated multi-walled nanotubes.
In Chapter 3, preparation of Pt composites and durability analysis of them are given with discussions of the relationship of inherent properties of carbon nanotubes with their Pt composites electrochemical durability. Whereas multi-walled nanotubes with large diameters showed the best catalyst durability due to the multi-walled structure and low carbon-carbon bond strain.
In Chapter 4, preparation of PTFE particle added catalyst ink and gas diffusion electrode preparation by filtration method with performance analysis were given. Whereas hydrophobic PTFE added catalysts showed increased performance due to effective elimination of the produced water from the cathode catalyst layer.
In Chapter 5, detailed conclusion about the relationship of inherent properties of carbon nanotubes effecting the electrochemical durability was given.
