Journal
CHEMSUSCHEM
Volume 7, Issue 12, Pages 3328-3333Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201402862
Keywords
anode; batteries; copper sulfide; high performance; lithium
Funding
- National Natural Science Foundation of China [21273185, 21321062]
- National Fund for Fostering Talents of Basic Science [J1310024]
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Nanorod-like CuS and Cu2S have been fabricated by a hydrothermal approach without using any surfactant and template. The electrochemical behavior of CuS and Cu2S nanorod anodes for lithium-ion batteries reveal that they exhibit stable lithium-ion insertion/extraction reversibility and outstanding rate capability. Both of the electrodes exhibit excellent capacity retentions irrespective of the rate used, even at a high current density of 3200 mAg(-1). More than 370 mAhg(-1) can be retained for the CuS electrode and 260 mAhg(-1) for the Cu2S electrode at the high current rate. After 100 cycles at 100 mAg(-1), the obtained CuS and Cu2S electrodes show discharge capacities of 472 and 313 mAhg(-1) with retentions of 92% and 96%, respectively. Together with the simplicity of fabrication and good electrochemical properties, CuS and Cu2S nanorods are promising anode materials for practical use the next-generation lithium-ion batteries.
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