Development of a polyaniline nanofiber-based carbon monoxide sensor for hydrogen fuel cell application

研究成果: ジャーナルへの寄稿学術誌査読

26 被引用数 (Scopus)

抄録

The sensing of carbon monoxide (CO) impurity contained in hydrogen fuel is a challenging work in the field of low temperature proton exchange membrane fuel cell (PEMFC). In the present work a chemiresistive gas sensor based on polyaniline (PANI) nanofibers was developed to detect CO in hydrogen. The sensor was fabricated by a template-free electrochemical polymerization of aniline on an interdigitated electrode. The most distinctive feature of the fabricated sensor was the formation of a horizontally oriented, monolayered PANI nanofiber network on the insulating gap area. The gas sensing character of the PANI nanosensor was evaluated by measuring the change in electrical resistance when gas atmosphere was changed from pure hydrogen to mixtures of CO in hydrogen. The results demonstrated that the PANI nanosensor had an excellent responding ability on CO in hydrogen with a concentration as low as 1 ppm. The influences of parameters, such as nanostructure, doping level, dopants, and CO concentrations, on the sensing characters of the nanosensor were discussed. The responding mechanism was attributed to the different binding sites of CO and H2 with PANI: H2 with the protonated amine nitrogen atoms and CO with the unprotonated amine nitrogen atoms. In view of its novel sensing mechanism and high sensing performance, the fabricated sensor is very promising to be applied as a new type of CO sensor to prevent the catalysis poisoning of PEMFC. Highlights: A chemiresistive polyaniline nanofiber sensor is developed to detect CO in hydrogen. The nanofiber sensor is fabricated by a template-free electrochemical polymerization. The nanofibers have a horizontally oriented, monolayered network structure. The sensor shows a reversible, rapid response on 1 ppm CO in hydrogen. The sensor can be used to prevent the CO poisoning of catalyst in PEM fuel cell.

本文言語英語
ページ(範囲)13529-13535
ページ数7
ジャーナルInternational Journal of Hydrogen Energy
37
18
DOI
出版ステータス出版済み - 9月 2012

!!!All Science Journal Classification (ASJC) codes

  • 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

フィンガープリント

「Development of a polyaniline nanofiber-based carbon monoxide sensor for hydrogen fuel cell application」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル