Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 1, Issue 6, Pages 2139-2143Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ta00125j
Keywords
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Funding
- National Natural Science Foundation [21001046, 51002059, 21171045]
- 973 Program of China [2011CB933300]
- Program for New Century Excellent Talents of the University in China [NCET-11-0179]
- Natural Science Foundation of Hubei Province [2011CDB035]
- Director Fund of WNLO
- innovation special fund of Harbin Science and Technology Bureau of China [2010RFXXS055]
- program for Scientific and Technological Innovation team Construction in Universities of Heilongjiang province [2011TD010]
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Manganese-based oxides have been proven to be promising materials for applications in high voltage and high energy density Li-ion batteries. In this work, by using hydrothermally synthesized beta-MnO2 nanorods as the templates, we prepared single-crystalline CoMn2O4 nano/submicrorods with diameters of about 100 nm and lengths up to tens of micrometers. The electrochemical tests showed that the CoMn2O4 products have a reversible capacity of 512 mA h g(-1) at a current density of 200 mA g(-1) with a coulombic efficiency of 98% after 100 cycles. A specific capacity of about 400 mA h g(-1) was obtained even at a current density as high as 1000 mA g(-1), exhibiting a high reversibility and a good capacity retention. This study suggests that CoMn2O4 nano/submicrorods are promising anode materials for high performance lithium-ion batteries.
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