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Electrochemical Oxygen Reduction Reaction on Ag Nanoparticles of Different Shapes
Author(s) -
Van Cleve Tim,
Gibara Emily,
Linic Suljo
Publication year - 2016
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.201500899
Subject(s) - electrochemistry , catalysis , nanoparticle , platinum , materials science , oxygen reduction reaction , oxygen , carbon fibers , electrocatalyst , silver nanoparticle , inorganic chemistry , oxygen reduction , oxygen evolution , chemical engineering , metal , platinum nanoparticles , nanotechnology , hydroxide , chemistry , electrode , organic chemistry , metallurgy , composite material , engineering , composite number
Silver electrocatalysts are an attractive alternative to platinum for electrochemical oxygen reduction reaction in alkaline fuel cells. Recent advances in the synthesis of metal nanoparticles have enabled the design of silver nanoparticles of different shapes, terminated with different surface facets that exhibit different catalytic properties. In this contribution, we prepared spherical and cubic silver nanoparticle electrocatalysts and tested their electrocatalytic oxygen reduction reaction activity in 0.1 m sodium hydroxide. Our work demonstrates that carbon‐supported silver nanospheres and nanocubes of similar size exhibit similar ORR activity with the spheres slightly outperforming the cubes. In addition, we suggest possible reasons for the slightly enhanced activity of the nanospheres.