Towards hydrogen production using a breathable electrode structure to directly separate gases in the water splitting reaction

Orawan Winther-Jensen, Khwanrat Chatjaroenporn, Bjorn Winther Jensen, Douglas R. MacFarlane

研究成果: Article査読

14 被引用数 (Scopus)

抄録

A novel electrode design to directly separate the gases and improve the efficiency of the water splitting reaction is described. In this work, platinum was used as a model catalyst, deposited on porous membranes with different pore size and shape. The O 2 evolution rate was monitored at the gaseous side of these breathable electrodes. We show that the hydrophobic Goretex ® membrane electrodes provide a highly efficient removal of the gases, breathing out 92% of expected O 2 during water splitting, and thereby also largely avoiding the well known migration of oxygen to the cathode in the absence of a separator in the cell. The breathable structure is also shown to operate as a hydrogen electrode. The ability to separate the two gases, without the need for a separator, decreases gas cross-over and thereby enhances the coloumbic efficiency. Merging this approach with catalysts and photocatalysts of a variety of types e.g. non-precious metal and metal oxides will allow fabrication of cost efficient and straightforward water splitting devices.

本文言語English
ページ(範囲)8185-8189
ページ数5
ジャーナルInternational Journal of Hydrogen Energy
37
10
DOI
出版ステータスPublished - 2012 5
外部発表はい

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • 凝縮系物理学
  • エネルギー工学および電力技術

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