2015年
Connected nanoparticle catalysts possessing a porous, hollow capsule structure as carbon-free electrocatalysts for oxygen reduction in polymer electrolyte fuel cells
ENERGY & ENVIRONMENTAL SCIENCE
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- 巻
- 8
- 号
- 12
- 開始ページ
- 3545
- 終了ページ
- 3549
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1039/c5ee02450a
- 出版者・発行元
- ROYAL SOC CHEMISTRY
We employ connected nanoparticle catalysts with a porous, hollow capsule structure as carbon-free electrocatalysts for the cathode in polymer electrolyte fuel cells (PEFCs) or proton exchange membrane fuel cells (PEMFCs). The catalysts consist of fused ordered alloy platinum-iron (Pt-Fe) nanoparticles. This unique beaded network structure enables surprisingly high activity for the oxygen reduction reaction, 9 times that of the state-of-the-art commercial catalyst. Because the connected nanoparticle catalysts are formed without sacrificing the high surface area of the nanoparticles and can conduct electrons, the catalysts show good performance in an actual PEMFC without a carbon support. Moreover, the elimination of carbon intrinsically solves the problem of carbon corrosion. Thus, the connected nanoparticle catalysts with a unique structure are a significant advancement over conventional electrode catalysts and will lead to an ultimate solution for PEMFC cathodes.
- リンク情報
- ID情報
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- DOI : 10.1039/c5ee02450a
- ISSN : 1754-5692
- eISSN : 1754-5706
- ORCIDのPut Code : 37298268
- Web of Science ID : WOS:000365412300010