Abstract
| Original language | English |
|---|---|
| Journal | Chemical Engineering Journal |
| Volume | 366 |
| Pages (from-to) | 390-403 |
| ISSN | 1369-703X |
| DOIs | |
| Publication status | Published - 2019 |
Keywords
- CuCo2O4
- Energy storage
- Porous carbon
- Asymmetric supercapacitors
- Charge-discharge
Cite this
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Asymmetric supercapacitor based on carbon nanofibers as the anode and two-dimensional copper cobalt oxide nanosheets as the cathode. / Suresh Babu, R.; Vinodh, R.; de Barros, A.L.F.; Samyn, L. M.; Prasanna, K.; Maier, M.A.; Alves, C.H.F.; Kim, Hee-Je.
In: Chemical Engineering Journal, Vol. 366, 2019, p. 390-403.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Asymmetric supercapacitor based on carbon nanofibers as the anode and two-dimensional copper cobalt oxide nanosheets as the cathode
AU - Suresh Babu, R.
AU - Vinodh, R.
AU - de Barros, A.L.F.
AU - Samyn, L. M.
AU - Prasanna, K.
AU - Maier, M.A.
AU - Alves, C.H.F.
AU - Kim, Hee-Je
PY - 2019
Y1 - 2019
N2 - This paper reports the fabrication of an ultra-high energy and power density asymmetric supercapacitor (ASC) containing a novel porous carbon nanofiber derived from hypercross-linked polymers (HCP-CNF) and two-dimensional copper cobalt oxide nanosheets (CCO-NS) as the negative and positive electrodes, respectively. The micropore-enriched HCP-CNF is obtained from a facile Friedel-Crafts reaction with naphthalene and α, α′-dichloro-p-xylene as the starting material. The CCO-NS have been prepared by a simple and inexpensive hydrothermal synthesis using polyvinylpyrrolidone (PVP) as a shape controlling agent. The fabricated CCO-NS//HCP-CNF ASC device exhibit a high specific capacitance, 244 F g−1 at a current density of 1 A g−1, owing to the unique porous architecture of CCO-NS and the interconnected microporous carbon skeleton with a high surface area of HCP-CNF. Furthermore, the assembled ASC device show an ultra-high energy density of 25.1 Wh kg−1 at a power density of 400 W kg−1 with maximum operating voltage of 1.60 V. The electrode shows good capacitance retention (91.1%) after 5000 cycles in a 3 M aqueous KOH solution. In addition, two ASC devices are connected in series powered a 5 mm diameter LED indicator for approximately 30 min, highlighting its efficient power supply.
AB - This paper reports the fabrication of an ultra-high energy and power density asymmetric supercapacitor (ASC) containing a novel porous carbon nanofiber derived from hypercross-linked polymers (HCP-CNF) and two-dimensional copper cobalt oxide nanosheets (CCO-NS) as the negative and positive electrodes, respectively. The micropore-enriched HCP-CNF is obtained from a facile Friedel-Crafts reaction with naphthalene and α, α′-dichloro-p-xylene as the starting material. The CCO-NS have been prepared by a simple and inexpensive hydrothermal synthesis using polyvinylpyrrolidone (PVP) as a shape controlling agent. The fabricated CCO-NS//HCP-CNF ASC device exhibit a high specific capacitance, 244 F g−1 at a current density of 1 A g−1, owing to the unique porous architecture of CCO-NS and the interconnected microporous carbon skeleton with a high surface area of HCP-CNF. Furthermore, the assembled ASC device show an ultra-high energy density of 25.1 Wh kg−1 at a power density of 400 W kg−1 with maximum operating voltage of 1.60 V. The electrode shows good capacitance retention (91.1%) after 5000 cycles in a 3 M aqueous KOH solution. In addition, two ASC devices are connected in series powered a 5 mm diameter LED indicator for approximately 30 min, highlighting its efficient power supply.
KW - CuCo2O4
KW - Energy storage
KW - Porous carbon
KW - Asymmetric supercapacitors
KW - Charge-discharge
U2 - 10.1016/j.cej.2019.02.108
DO - 10.1016/j.cej.2019.02.108
M3 - Journal article
VL - 366
SP - 390
EP - 403
JO - Biochemical Engineering Journal
JF - Biochemical Engineering Journal
SN - 1369-703X
ER -