Issue 48, 2016

Growth of copper oxide nanocrystals in metallic nanotubes for high performance battery anodes

Abstract

A rational integration of 1D metallic nanotubes and oxide nanoparticles has been demonstrated as a viable strategy for the production of both highly stable and efficient anodes for lithium ion batteries. We encapsulated copper oxide (CuO) nanoparticles in ultra-long metallic copper nanotubes with engineered interspaces, and explored their electrochemical properties. Such a hierarchical architecture provides three important features: (i) a continuous nanoscale metallic Cu shell to minimize electronic/ionic transmitting impedance; (ii) a unique quasi-one-dimensional structure with a large aspect ratio to reduce self-aggregation; (iii) free space for volume expansion of CuO nanoparticles and stable solid–electrolyte interphase (SEI) formation. The anode materials with such hierarchical structures have high specific capacity (around 600 mA h g−1 at a current density of 0.1 A g−1), excellent cycling stability (over 94% capacity retention after 200 cycles) and superb reversible capacity of 175 mA h g−1 at a high charging rate of 15 A g−1.

Graphical abstract: Growth of copper oxide nanocrystals in metallic nanotubes for high performance battery anodes

Supplementary files

Article information

Article type
Paper
Submitted
15 Sep 2016
Accepted
28 Oct 2016
First published
31 Oct 2016

Nanoscale, 2016,8, 19994-20000

Growth of copper oxide nanocrystals in metallic nanotubes for high performance battery anodes

Y. Zhao, S. Mu, W. Sun, Q. Liu, Y. Li, Z. Yan, Z. Huo and W. Liang, Nanoscale, 2016, 8, 19994 DOI: 10.1039/C6NR07292E

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