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Conductive Porous Network of Metal–Organic Frameworks Derived Cobalt‐Nitrogen‐doped Carbon with the Assistance of Carbon Nanohorns as Electrocatalysts for Zinc–Air Batteries
Author(s) -
Zhang Jianshuo,
Wu Chuxin,
Huang Meihua,
Zhao Yi,
Li Jiaxin,
Guan Lunhui
Publication year - 2018
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.201701794
Subject(s) - electrocatalyst , bimetallic strip , catalysis , materials science , carbon fibers , chemical engineering , cobalt , methanol , zinc , metal organic framework , inorganic chemistry , porosity , battery (electricity) , metal , nanotechnology , electrode , chemistry , composite material , metallurgy , electrochemistry , organic chemistry , composite number , power (physics) , physics , adsorption , quantum mechanics , engineering
Herein, we report a new electrocatalyst for the oxygen reduction reaction derived from a bimetallic metal–organic framework and single‐walled carbon nanohorns. Owing to the 3D conductive network offered by the nanohorns, this type of catalyst exhibits comparable performance with the commercial 20 % Pt/C catalyst as well as excellent durability and methanol tolerance at the half‐cell test in an alkaline medium. Moreover, the new electrocatalyst shows higher peak power density (185 mW cm −2 ) than that of Pt/C (160 mW cm −2 ) in addition to a comparable stability in a real Zn–air battery test. A correlation between the value of the peak power densities and pore structures of some parallel samples is studied in detail.