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Metal–Organic Framework Derived Carbon Nanotube Grafted Cobalt/Carbon Polyhedra Grown on Nickel Foam: An Efficient 3D Electrode for Full Water Splitting
Author(s) -
Aijaz Arshad,
Masa Justus,
Rösler Christoph,
Xia Wei,
Weide Philipp,
Fischer Roland A.,
Schuhmann Wolfgang,
Muhler Martin
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600452
Subject(s) - electrocatalyst , nickel , materials science , cobalt , carbonization , carbon nanotube , carbon fibers , water splitting , metal organic framework , oxygen evolution , chemical engineering , electrolysis , inorganic chemistry , electrolysis of water , electrode , catalysis , nanotechnology , chemistry , composite material , electrochemistry , electrolyte , organic chemistry , metallurgy , photocatalysis , adsorption , composite number , scanning electron microscope , engineering
The growth of metal–organic framework (ZIF‐67) nanocrystals on nickel foam (NF), followed by carbonization in diluted H 2 , leads to a nitrogen‐doped carbon‐nanotube‐grafted cobalt/carbon polyhedra film on NF. The obtained material serves as a highly active binder‐free electrocatalyst for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), enabling high‐performance alkaline (0.1 m KOH) water electrolysis with potentials of 1.62 and 0.24 V, respectively, at OER and HER current densities of 10 mA cm −2 .