Abstract
The fabrication of manganese oxide-carbon composite microspheres with open nanochannels and their electrochemical performance as anode materials for lithium ion batteries are investigated. Amorphous-like Mn3O4 nanoparticles embedded in a carbon matrix with three-dimensional channels are fabricated by one-pot spray pyrolysis. The electrochemical properties of the Mn 3O4 nanopowders are also compared with those of the Mn3O4-C composite microspheres possessing macropores resembling ant-cave networks. The discharge capacity of the Mn3O4-C composite microspheres at a current density of 500 mA g-1 is 622 mA h g -1 after 700 cycles. However, the discharge capacity of the Mn 3O4 nanopowders is as low as 219 mA h g21 after 100 cycles. The Mn3O4-C composite microspheres with structural advantages and high electrical conductivity have higher initial discharge and charge capacities and better cycling and rate performances compared to those of the Mn3O4 nanopowders.
| Original language | English |
|---|---|
| Article number | 5751 |
| Journal | Scientific reports |
| Volume | 4 |
| DOIs | |
| Publication status | Published - 2014 Aug 29 |
| Externally published | Yes |
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Cite this
One-pot synthesis of manganese oxide-carbon composite microspheres with three dimensional channels for Li-ion batteries. / Ko, You Na; Park, Seung Bin; Choi, Seung Ho; Kang, Yun Chan.
In: Scientific reports, Vol. 4, 5751, 29.08.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - One-pot synthesis of manganese oxide-carbon composite microspheres with three dimensional channels for Li-ion batteries
AU - Ko, You Na
AU - Park, Seung Bin
AU - Choi, Seung Ho
AU - Kang, Yun Chan
PY - 2014/8/29
Y1 - 2014/8/29
N2 - The fabrication of manganese oxide-carbon composite microspheres with open nanochannels and their electrochemical performance as anode materials for lithium ion batteries are investigated. Amorphous-like Mn3O4 nanoparticles embedded in a carbon matrix with three-dimensional channels are fabricated by one-pot spray pyrolysis. The electrochemical properties of the Mn 3O4 nanopowders are also compared with those of the Mn3O4-C composite microspheres possessing macropores resembling ant-cave networks. The discharge capacity of the Mn3O4-C composite microspheres at a current density of 500 mA g-1 is 622 mA h g -1 after 700 cycles. However, the discharge capacity of the Mn 3O4 nanopowders is as low as 219 mA h g21 after 100 cycles. The Mn3O4-C composite microspheres with structural advantages and high electrical conductivity have higher initial discharge and charge capacities and better cycling and rate performances compared to those of the Mn3O4 nanopowders.
AB - The fabrication of manganese oxide-carbon composite microspheres with open nanochannels and their electrochemical performance as anode materials for lithium ion batteries are investigated. Amorphous-like Mn3O4 nanoparticles embedded in a carbon matrix with three-dimensional channels are fabricated by one-pot spray pyrolysis. The electrochemical properties of the Mn 3O4 nanopowders are also compared with those of the Mn3O4-C composite microspheres possessing macropores resembling ant-cave networks. The discharge capacity of the Mn3O4-C composite microspheres at a current density of 500 mA g-1 is 622 mA h g -1 after 700 cycles. However, the discharge capacity of the Mn 3O4 nanopowders is as low as 219 mA h g21 after 100 cycles. The Mn3O4-C composite microspheres with structural advantages and high electrical conductivity have higher initial discharge and charge capacities and better cycling and rate performances compared to those of the Mn3O4 nanopowders.
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UR - http://www.scopus.com/inward/citedby.url?scp=84906808175&partnerID=8YFLogxK
U2 - 10.1038/srep05751
DO - 10.1038/srep05751
M3 - Article
VL - 4
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 5751
ER -