論文

査読有り
2018年6月

Graphene Layer Encapsulation of Non-Noble Metal Nanoparticles as Acid-Stable Hydrogen Evolution Catalysts

ACS Energy Lett.
  • Hu, Kailong
  • ,
  • Ohto, Tatsuhiko
  • ,
  • Chen, Linghan
  • ,
  • Han, Jiuhui
  • ,
  • Wakisaka, Mitsuru
  • ,
  • Nagata, Yuki
  • ,
  • Fujita, Jun-ichi
  • ,
  • Ito, Yoshikazu

3
7
開始ページ
1539
終了ページ
1544
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acsenergylett.8b00739
出版者・発行元
ACS Publications

Acid-stable, non-noble catalysts are promising for hydrogen evolution reaction (HER); however, they get easily damaged when used in acidic electrolytes, thus reducing the HER lifetimes. Moreover, completely blocking catalysts from acidic electrolytes degrades HER performance. To achieve a balance between the HER lifetime and performance, we vary the number of N-doped graphene layers (1-2, 2-3, and 3-5 layers) encapsulating NiMo nanoparticles as efficient HER catalysts and obtain the optimal number of protective layers. Our data show that 3-5 graphene layers achieved the best balance, with a stable current density of 100 mA cm(-2) for 25 h in 0.5 M H2SO4. Density functional theory calculations are performed to show the effect of encapsulating graphene layer number on the catalytic activity and protection of non-noble NiMo in acidic electrolytes.

リンク情報
DOI
https://doi.org/10.1021/acsenergylett.8b00739
ID情報
  • DOI : 10.1021/acsenergylett.8b00739
  • ISSN : 2380-8195

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