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Ultrafine Ag Nanoparticles as Active Catalyst for Electrocatalytic Hydrogen Production
Author(s) -
Kang WenJing,
Cheng ChuanQi,
Li Zhe,
Feng Yi,
Shen GuRong,
Du XiWen
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201901364
Subject(s) - tafel equation , overpotential , catalysis , nanoparticle , hydrogen production , materials science , foil method , adsorption , chemical engineering , hydrogen , nanotechnology , chemistry , electrode , electrochemistry , organic chemistry , composite material , engineering
Ag nanoparticles with different sizes were produced by laser ablation in liquid (PLAL) through tuning laser energy. As the catalyst for hydrogen evolution reaction (HER) in acidic medium, Ag nanoparticles show strong size‐dependent activity, and the smallest Ag nanoparticles with average size of 3 nm display a low overpotential of 96 mV at 10 mA cm −2 and Tafel slope of 76.10 mV dec −1 , being superior to Ag foil and commercial Ag powder. The excellent performance is attributed to the large exposed surface, low coordination number, moderate hydrogen adsorption energy, and low charge transfer resistance.