Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 4, Issue 11, Pages 5974-5980Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am301641y
Keywords
Co3O4; hydrothermal synthesis; mesoporous nanobelts; single-crystalline; lithium-ion batteries
Funding
- National Natural Science Foundation of China [51172205, 51002138]
- Natural Science Foundation of Zhejiang Province [Y4110523]
- Qianjiang Project of Zhejiang Province [2010R10029]
- New Century Excellent Talents in University [NCET 111079]
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In this paper, one-dimensional (1D) mesoporous single-crystalline Co3O4 nanobelts are synthesized by a facile hydrothermal method followed by calcination treatment. The as-prepared nanobelts have unique mesoporous structures, which are constructed by many interconnected nano-crystals with sizes of about 20-30 nm. And typical size of the nanobelts is in the range of 100-300 nm in width and up to several micrometers in length. The BET surface area of Co3O4 nanobelts is determined to be about 36.5 m(2) g(-1) with dominant pore diameter of 29.2 nm. Because of the ID structure, mesoporous morphologies and scrupulous nano-architectures, the Co3O4 nanobelts show excellent electrochemical performances such as high storage capacity and superior rate capability. The specific capacity of Co3O4 nanobelts could remains over 614 mA h g(-1) at a current density of 1 A g(-1) after 60 cycles. Even at a high current density of 3 A g(-1), these Co3O4 nanobelts still could deliver a remarkable discharge capacity of 605 mA h g(-1) with good cycling stability.
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