Abstract
A porous structure has great advantages in electrodes for lithium ion batteries (LIBs), because it can not only offer a large surface area for the electrode to contact the electrolyte, but can also relieve the mechanical stress derived from Li+ insertion/extraction. In this work, porous CoC2O4 nanorods were synthesized through a facile metathesis reaction using H2C2O4·2H2O and Co(CH3COO)2·4H2O as raw materials. The porous CoC2O4 nanorods show excellent electrochemical properties including high specific capacity, long cycling stability and good rate capability. After 100 cycles, the electrode maintained a capacity of 1230 mAh g−1 at a current density of 500 mA g−1. Even at a high current density of 4000 mA g−1, the sample still delivered a capacity of 385 mAh g−1. These results indicate that porous CoC2O4 nanorods are an exceptional anode material for high-performance LIBs.
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Acknowledgements
This work was supported by Science and Technology Committee of Shanxi Province (No. 20110321051), Shanxi Scholarship Council of China (No. 2015-034), Technology Development, China, Project (No. 2011-038) and Natural Science Foundation of China (Grant No. 51301117).
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Zhang, Y., Lu, Z., Guo, M. et al. Porous CoC2O4 Nanorods as High Performance Anode Material for Lithium Ion Batteries. JOM 68, 2952–2957 (2016). https://doi.org/10.1007/s11837-016-2126-4
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DOI: https://doi.org/10.1007/s11837-016-2126-4