Introducing Dual Functional CNT Networks into CuO Nanomicrospheres toward Superior Electrode Materials for Lithium-Ion Batteries
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Abstract
An optimized nanostructure design of electrode materials for high-performance lithium-ion batteries was realized by introducing three-dimensional (3D) carbon nanotube (CNT) networks into transition metal oxide nanomicrospheres. A CuO−CNT composite was selected as a typical example of the optimized design. Self-assembled CuO and CuO−CNT nanomicrospheres have been successfully synthesized by a simple solution method and investigated with SEM, TEM, XRD, and electrochemical experiments. The CuO−CNT composite spheres exhibit remarkably enhanced cycling performance and rate performance compared with CuO spheres when being used as anode materials in lithium-ion batteries. It benefits from an as-formed 3D network of CNTs, which has dual functions, viz. a 3D current collector network and an elastic buffer.
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