Abstract
In this study, we successfully design and synthesize the mesoporous carbon coated carbon nanofibers (CNF@mesoCs) for the Li-air battery. The composites are fabricated via electrospinning technique and nanocasting strategy. After mesoporous carbon coating process, the composites have retained their original one-dimensional structure as pristine carbon nanofibers. Every nanofiber entangles with each other to form a three-dimensional cross-linked web structure. Because of the mesoporous carbon coating on carbon nanofibers, the surface area increases from 708 m 2 g -1 to 2194 m 2 g -1 . We confirm that the mesoporous carbon coated on carbon nanofibers is well-graphitized by analysis of Raman spectra. The graphitized surface of CNF@mesoCs (4.638 S cm -1 ) is believed to result in their higher electrical conductivity than that of pristine carbon nanofibers (3.0759 S cm -1 ). Without employment of any binders and metal foams, the cathode of CNF@mesoCs exhibits high discharge capacity of 4000 mA h g -1 , which is much higher than that from pristine carbon nanofibers (2750 mA h g -1 ). This work demonstrates that the fabricated CNF@mesoCs structures have a great potential to be employed as light-weight and efficient electrode for energy storage and conversion devices.
| Original language | English |
|---|---|
| Pages (from-to) | 435-440 |
| Number of pages | 6 |
| Journal | Applied Surface Science |
| Volume | 320 |
| DOIs | |
| Publication status | Published - 2014 Nov 30 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films
Cite this
}
Fabrication and characterization of carbon nanofiber@mesoporous carbon core-shell composite for the Li-air battery. / Song, Myeong Jun; Shin, Moo Whan.
In: Applied Surface Science, Vol. 320, 30.11.2014, p. 435-440.Research output: Contribution to journal › Article
TY - JOUR
T1 - Fabrication and characterization of carbon nanofiber@mesoporous carbon core-shell composite for the Li-air battery
AU - Song, Myeong Jun
AU - Shin, Moo Whan
PY - 2014/11/30
Y1 - 2014/11/30
N2 - In this study, we successfully design and synthesize the mesoporous carbon coated carbon nanofibers (CNF@mesoCs) for the Li-air battery. The composites are fabricated via electrospinning technique and nanocasting strategy. After mesoporous carbon coating process, the composites have retained their original one-dimensional structure as pristine carbon nanofibers. Every nanofiber entangles with each other to form a three-dimensional cross-linked web structure. Because of the mesoporous carbon coating on carbon nanofibers, the surface area increases from 708 m 2 g -1 to 2194 m 2 g -1 . We confirm that the mesoporous carbon coated on carbon nanofibers is well-graphitized by analysis of Raman spectra. The graphitized surface of CNF@mesoCs (4.638 S cm -1 ) is believed to result in their higher electrical conductivity than that of pristine carbon nanofibers (3.0759 S cm -1 ). Without employment of any binders and metal foams, the cathode of CNF@mesoCs exhibits high discharge capacity of 4000 mA h g -1 , which is much higher than that from pristine carbon nanofibers (2750 mA h g -1 ). This work demonstrates that the fabricated CNF@mesoCs structures have a great potential to be employed as light-weight and efficient electrode for energy storage and conversion devices.
AB - In this study, we successfully design and synthesize the mesoporous carbon coated carbon nanofibers (CNF@mesoCs) for the Li-air battery. The composites are fabricated via electrospinning technique and nanocasting strategy. After mesoporous carbon coating process, the composites have retained their original one-dimensional structure as pristine carbon nanofibers. Every nanofiber entangles with each other to form a three-dimensional cross-linked web structure. Because of the mesoporous carbon coating on carbon nanofibers, the surface area increases from 708 m 2 g -1 to 2194 m 2 g -1 . We confirm that the mesoporous carbon coated on carbon nanofibers is well-graphitized by analysis of Raman spectra. The graphitized surface of CNF@mesoCs (4.638 S cm -1 ) is believed to result in their higher electrical conductivity than that of pristine carbon nanofibers (3.0759 S cm -1 ). Without employment of any binders and metal foams, the cathode of CNF@mesoCs exhibits high discharge capacity of 4000 mA h g -1 , which is much higher than that from pristine carbon nanofibers (2750 mA h g -1 ). This work demonstrates that the fabricated CNF@mesoCs structures have a great potential to be employed as light-weight and efficient electrode for energy storage and conversion devices.
UR - http://www.scopus.com/inward/record.url?scp=84919392988&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84919392988&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2014.09.100
DO - 10.1016/j.apsusc.2014.09.100
M3 - Article
AN - SCOPUS:84919392988
VL - 320
SP - 435
EP - 440
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -