Journal
NANO RESEARCH
Volume 7, Issue 5, Pages 794-803Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-014-0440-0
Keywords
msoporous material; faceted crystal; anode material; lithium ion battery
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Funding
- Commonwealth of Australia through the Automotive Australia Cooperative Research Centre (AutoCRC)
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Faceted crystals with exposed highly reactive planes have attracted intensive investigations for applications. Herein, we demonstrate a general synthetic method to prepare mesocrystal Co3O4 with predominantly exposed {111} reactive facets by the in situ thermal decomposition from Co(OH)(2) nanoplatelets. The mesocrystal feature was identified by field emission scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, and N-2 isotherm analyses. When applied as anode material in lithium-ion batteries, mesocrystal Co3O4 nanoplatelets delivered a high specific capacity and an outstanding high rate performance. The superior electrochemical performance should be ascribed to the predominantly exposed {111} active facets and highly accessible surfaces. This synthetic strategy could be extended to prepare other mesocrystal functional nanomaterials.
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