Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 36, Pages 19190-19195Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm32036c
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Funding
- National Natural Science Foundation of China [51002057, 50825203]
- 863 program [2009AA03Z225]
- Natural Science Foundation of Hubei Province [2008CDA026]
- PCSIRT (Program for Changjiang Scholars and Innovative Research Team in University)
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A rapid and economical route based on an efficient microwave-polyol process has been developed to synthesize a disk-like Mn-complex precursor. It can be topotactically converted into porous C-modified MnO disks by post-heating treatment. The as-formed porous C-MnO disks with an average thickness of similar to 50 nm and diameters up to 3 mu m possess a large specific surface area of 75.3 m(2) g(-1). Interestingly, each C-MnO disk has a single-crystal-like nature, which is built up by the assembly of carbon-modified MnO nanocrystals of similar to 12 nm through the same crystallographic orientation. The as-synthesized C-MnO nanocomposite exhibits high capacity and excellent cycling stability when used as an anode material for lithium-ion batteries, which can be attributed to the unique assembled nanoarchitecture involving three-dimensionally interconnected nanopores and carbon modification as well as small particle sizes of MnO nanocrystals. This work provides a simple and efficient pathway to self-organized porous C-MnO nanohybrids without using any templates or seeds.
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