Silver‐Graphene Nanoribbon Composite Catalyst for the Oxygen Reduction Reaction in Alkaline Electrolyte | Zendy

Davis Danae J. | Zendy; Raji AbdulRahman O. | Zendy; Lambert Timothy N. | Zendy; Vigil Julian A. | Zendy; Li Lei | Zendy; Nan Kewang | Zendy; Tour James M. | Zendy

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Silver‐Graphene Nanoribbon Composite Catalyst for the Oxygen Reduction Reaction in Alkaline Electrolyte

Author(s) -

Davis Danae J.,

Raji AbdulRahman O.,

Lambert Timothy N.,

Vigil Julian A.,

Li Lei,

Nan Kewang,

Tour James M.

Publication year - 2014

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201300254

Subject(s) - catalysis , graphene , oxygen reduction reaction , electrolyte , materials science , substrate (aquarium) , carbon nanotube , carbon fibers , composite number , alloy , oxygen , chemical engineering , graphene nanoribbons , inorganic chemistry , chemistry , nanotechnology , electrode , electrochemistry , metallurgy , composite material , organic chemistry , oceanography , geology , engineering

Silver‐graphene nanoribbons (Ag‐GNRs) were prepared from the chemical unzipping of multiwalled carbon nanotubes (MWCNTs) by reaction with Na/K alloy, Ag(O 2 CCH 3 ) and then CH 3 OH. Ag‐GNRs exhibited improved electrocatalytic ability for the oxygen reduction reaction (ORR) in 0.1 M KOH as compared to the underlying GNR substrate alone and displayed an earlier onset and higher currents than a commercial Ag/Carbon (Ag/C) catalyst. The Ag‐GNR hybrid demonstrates an outstanding tolerance to CH 3 OH crossover which exceeds that of the commercial benchmark, 20 % Pt/C.

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