4.8 Article

A Novel Heterostructure Based on RuMo Nanoalloys and N-doped Carbon as an Efficient Electrocatalyst for the Hydrogen Evolution Reaction

期刊

ADVANCED MATERIALS
卷 32, 期 46, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202005433

关键词

heterostructures; hydrogen evolution reaction; nanoalloys; nitrogen-doped carbon nanosheets

资金

  1. National Key Research and Development Program of China [2017YFE9134000/T7.KI-00039, 2018YFC0705401]
  2. NSFC Excellent Young Scientists Fund [51722304]
  3. NSFC [51973114, 21720102002, 51811530013]
  4. Shanghai Pujiang Talent Program [18PJ1406100]
  5. Science and Technology Commission of Shanghai Municipality [19JC412600]

向作者/读者索取更多资源

Heterostructures exhibit considerable potential in the field of energy conversion due to their excellent interfacial charge states in tuning the electronic properties of different components to promote catalytic activity. However, the rational preparation of heterostructures with highly active heterosurfaces remains a challenge because of the difficulty in component tuning, morphology control, and active site determination. Herein, a novel heterostructure based on a combination of RuMo nanoalloys and hexagonal N-doped carbon nanosheets is designed and synthesized. In this protocol, metal-containing anions and layered double hydroxides are employed to control the components and morphology of heterostructures, respectively. Accordingly, the as-made RuMo-nanoalloys-embedded hexagonal porous carbon nanosheets are promising for the hydrogen evolution reaction (HER), resulting in an extremely small overpotential (18 mV), an ultralow Tafel slope (25 mV dec(-1)), and a high turnover frequency (3.57 H(2)s(-1)) in alkaline media, outperforming current Ru-based electrocatalysts. First-principle calculations based on typical 2D N-doped carbon/RuMo nanoalloys heterostructures demonstrate that introducing N and Mo atoms into C and Ru lattices, respectively, triggers electron accumulation/depletion regions at the heterosurface and consequently reduces the energy barrier for the HER. This work presents a convenient method for rational fabrication of carbon-metal heterostructures for highly efficient electrocatalysis.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据