Integrated
Charge Transfer in Colloidal Cu–MnO Heterostructures for High-Performance
Lithium Ion Batteries
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Abstract
Nanodimensional
monodispersed Cu–MnO heterostructures were synthesized via
a facile solution-based method. Cu–MnO heterostructures with
narrow size distribution were successfully achieved in the presence
of organic surfactants to prevent agglomeration during the growth
process. Furthermore, the unique architecture of carbon-coated Cu–MnO
(Cu–MnO@C) core–shell heterostructures obtained after
a thermal annealing process preserved the electrical integrity of
the electrode via the conductive copper “nanobridge”
to provide an efficient electron transfer pathway between the active
materials and the current collector. On the other hand, the amorphous
carbonaceous shell evidently gives a protective layer to attain structural
integrity throughout the electrochemical measurements. Enhancement
in the electrochemical performance can be reflected by the excellent
cycling stability and high rate capability of the Cu–MnO@C
heterostructures as compared to the MnO@C nanoparticles