4.7 Article

Face-centered cubic structured RuCu hollow urchin-like nanospheres enable remarkable hydrogen evolution catalysis

期刊

SCIENCE CHINA-CHEMISTRY
卷 65, 期 1, 页码 87-95

出版社

SCIENCE PRESS
DOI: 10.1007/s11426-021-1112-2

关键词

ruthenium; phase control; face-centered cubic; hydrogen evolution catalysis; pH-universal

资金

  1. Ministry of Science and Technology of China [2017YFA0208200, 2016YFA0204100]
  2. National Natural Science Foundation of China [22025108, 21902136]
  3. China Postdoctoral Science Foundation [2020M682083]
  4. Xiamen University

向作者/读者索取更多资源

This study developed a method for preparing efficient pH-universal hydrogen evolution reaction electrocatalysts, successfully preparing fcc-structured Ru-copper hollow urchin-like nanospheres, and demonstrated outstanding performance under different conditions.
Ruthenium (Ru) is one of the most promising metals for its versatility in driving a wide range of catalytic reactions. However, owing to the intrinsic preference of hexagonal close-packed (hcp) phase for bulk Ru, currently, it is still challenging to construct Ru-based nanomaterials with face-centered-cubic (fcc) phase for optimizing their performance towards potential applications. Herein, we report a facile wet-chemical method to directly create unconventional fcc-structured Ru-copper hollow urchin-like nanospheres (fcc-RuCu HUNSs) as a class of efficient pH-universal hydrogen evolution reaction (HER) electrocatalyst. Interestingly, this synthetic strategy can be expanded to prepare other fcc-Ru-based alloy nanomaterials. Significantly, the novel fcc-RuCu HUNSs exhibit superior HER performance with the overpotential of only 25, 34, 40, and 26 mV to reach the current density of 10 mA cm(-2) in 0.5 M H2SO4, 0.05 M H2SO4, 0.1 M KOH, and 1 M KOH, respectively, much lower than those of hcp-RuCu HUNSs and commercial Pt/C. Density functional theory (DFT) calculations further indicate that their excellent pH-universal HER performance results from the optimized adsorption free energy of H and work functions. Our work highlights the importance of phase control to design high-efficiency nanocatalysts for relevant catalytic reactions in energy conversion.

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

4.7
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