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Nanoscale. 2014;6(3):1725-31. doi: 10.1039/c3nr05551e.

Synthesis of Mn₂O₃ nanomaterials with controllable porosity and thickness for enhanced lithium-ion batteries performance.

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1
Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China. ytqian@ustc.edu.cn.

Abstract

Mn₂O₃ has been demonstrated to be a promising electrode material for lithium-ion batteries. Thus, the fabrication of Mn₂O₃ nanomaterials with high specific capacity and cycling stability is greatly desired. Here we report a simple but effective method to synthesis Mn₂O₃ nanomaterials from a Mn(OH)₂ precursor, which was prepared from manganese acetate in ethylene glycol and water at 180 °C for 12 h. The morphology and sheet thickness of Mn(OH)₂ precursor could be tuned by controlling the ethylene glycol/H₂O volume ratio, resulting in a further tunable morphology and sheet thickness of the porous Mn₂O₃ nanomaterials. In the electrochemical tests the prepared Mn₂O₃ nanomaterials, with the porous architecture and thin thickness exhibited a high and stable reversible capacity, indicating that both small thickness and porous sheets structure are crucial for improving the electrochemical performance of Mn₂O₃ in terms of specific capacity and stability.

PMID:
24343374
DOI:
10.1039/c3nr05551e
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