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Abstract
Nanostructured metal oxides derived from metal organic frameworks have been shown to be promising materials for application in high energy density lithium ion batteries. In this work, porous nanostructured ZnCo2O4 and Co3O4 were synthesized by a facile and cost-effective approach via the calcination of MOF-74 precursors and tested as anode materials for lithium ion batteries. Compared with Co3O4, the electrochemical properties of the obtained porous nanostructured ZnCo2O4 exhibit higher specific capacity, more excellent cycling stability and better rate capability. It demonstrates a reversible capacity of 1243.2 mAh/g after 80 cycles at 100mA/g and an excellent rate performance with high average discharge specific capacities of 1586.8, 994.6, 759.6 and 509.2 mAh/g at 200, 400, 600 and 800mA/g, respectively. The satisfactory electrochemical performances suggest that this porous nanostructured ZnCo2O4 is potentially promising for application as an efficient anode material for lithium ion batteries.
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