文献类型：期刊文献

英文题名：Temperature-controlled synthesis of heterostructured Ru-Ru₂P nanoparticles embedded in carbon nanofibers for highly efficient hydrogen production

作者：Wei, Yue[1];Xu, Gao[2];Wei, Yujie[1];Ji, Lvlv[1];Wang, Tao[1];Liu, Zhun[2];Wang, Sheng[1]

机构：[1]Zhejiang Sci Tech Univ, Sch Mat Sci & Engn, Hangzhou 310018, Peoples R China;[2]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China

年份：2022

卷号：65

期号：10

起止页码：2675

外文期刊名：SCIENCE CHINA-MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000791145100001)、、WOS

基金：This work was financially supported by the Natural Science Foundation of Zhejiang Province (LQ20B030001 and LY20E020002) and China Postdoctoral Science Foundation (2021M702305).

语种：英文

外文关键词：hydrogen evolution reaction; Ru-based electro-catalysts; heterostructure; carbon nanofibers; electrocatalysis

外文摘要：Developing highly efficient, cost-effective, and stable electrocatalysts for hydrogen evolution reaction (HER) is of considerable importance but remains challenging. Herein, we report the fabrication of a robust Ru-based electrocatalyst, which comprises heterostructured Ru-Ru2P nanoparticles that are embedded in the N,P-codoped carbon nanofibers (CNFs), through a synthetic strategy involving electrospinning and temperature-controlled pyrolysis treatment. The as-prepared Ru-Ru2P catalyst (Ru-Ru2P@CNFs) shows excellent HER catalytic activities with low overpotentials of 11 and 14 mV in acidic and alkaline media, respectively, to achieve a current density of 10 mA cm(-2), which are superior to the individual components of pure Ru and Ru2P catalysts. Density functional theory calculations demonstrate the existence of electronic coupling effect between Ru and Ru2P at the heterointerfaces, leading to a well-modulated electronic structure with optimized hydrogen adsorption strength and enhanced electrical conductivity for efficient HER electrocatalysis. In addition, the overall synthetic strategy can be generalized for the synthesis of a series of transitional metal phosphide-based nanofibers, thereby holding a remarkable capacity for various potential applications.