Premium
A Highly Efficient Oxygen Evolution Catalyst Consisting of Interconnected Nickel–Iron‐Layered Double Hydroxide and Carbon Nanodomains
Author(s) -
Yin Shengming,
Tu Wenguang,
Sheng Yuan,
Du Yonghua,
Kraft Markus,
Borgna Armando,
Xu Rong
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201705106
Subject(s) - materials science , hydroxide , catalysis , amorphous solid , amorphous carbon , carbon fibers , nickel , chemical engineering , oxygen evolution , ligand (biochemistry) , nanotechnology , inorganic chemistry , composite number , organic chemistry , metallurgy , composite material , chemistry , electrode , biochemistry , receptor , electrochemistry , engineering
In this work, a one‐pot solution method for direct synthesis of interconnected ultrafine amorphous NiFe‐layered double hydroxide (NiFe‐LDH) (<5 nm) and nanocarbon using the molecular precursor of metal and carbon sources is presented for the first time. During the solvothermal synthesis of NiFe‐LDH, the organic ligand decomposes and transforms to amorphous carbon with graphitic nanodomains by catalytic effect of Fe. The confined growth of both NiFe‐LDH and carbon in one single sheet results in fully integrated amorphous NiFe‐LDH/C nanohybrid, allowing the harness of the high intrinsic activity of NiFe‐LDH due to (i) amorphous and distorted LDH structure, (ii) enhanced active surface area, and (iii) strong coupling between the active phase and carbon. As such, the resultant NiFe‐LDH/C exhibits superior activity and stability. Different from postdeposition or electrostatic self‐assembly process for the formation of LDH/C composite, this method offers one new opportunity to fabricate high‐performance oxygen evolution reaction and possibly other catalysts.