TY - JOUR
T1 - A novel battery-supercapacitor system with extraordinarily high performance
AU - Lee, Seung Hwan
AU - Jin, Bong Soo
AU - Kim, Hyun Soo
AU - Ahn, Hyo Jin
AU - Lee, Byung Gwan
N1 - Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC
PY - 2019/1/28
Y1 - 2019/1/28
N2 - In this paper, a battery-supercapacitor system is developed and its electrochemical performance is investigated. The battery-supercapacitor system is composed of a separated LiFePO 4 /activated carbon cathode and a separated Li 4 Ti 5 O 12 /activated carbon anode onto both sides of a piece of aluminum foil. We demonstrated the superior electrochemical performance of this battery-supercapacitor system, such as its energy density of 4.9–48.5 Wh/kg, power density of 167.7–5243.2 W/kg, rate capability of 73.9% at a current density of 20 A and cycle life (91.5% after 1800 cycles) which outperforms that of a hybrid supercapacitor. This can be explained by the synergistic effect of a Faradaic and non-Faradaic system in a single cell. The results clearly show that the battery-supercapacitor system, including a LiFePO 4 cathode/Li 4 Ti 5 O 12 anode and an activated carbon anode/activated carbon cathode, has great potential for use in advanced energy storage devices.
AB - In this paper, a battery-supercapacitor system is developed and its electrochemical performance is investigated. The battery-supercapacitor system is composed of a separated LiFePO 4 /activated carbon cathode and a separated Li 4 Ti 5 O 12 /activated carbon anode onto both sides of a piece of aluminum foil. We demonstrated the superior electrochemical performance of this battery-supercapacitor system, such as its energy density of 4.9–48.5 Wh/kg, power density of 167.7–5243.2 W/kg, rate capability of 73.9% at a current density of 20 A and cycle life (91.5% after 1800 cycles) which outperforms that of a hybrid supercapacitor. This can be explained by the synergistic effect of a Faradaic and non-Faradaic system in a single cell. The results clearly show that the battery-supercapacitor system, including a LiFePO 4 cathode/Li 4 Ti 5 O 12 anode and an activated carbon anode/activated carbon cathode, has great potential for use in advanced energy storage devices.
KW - Activated carbon anode/activated carbon cathode
KW - Advanced energy storage device
KW - Battery-supercapacitor system
KW - LiFePO cathode/Li Ti O anode
UR - http://www.scopus.com/inward/record.url?scp=85059473381&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2018.12.038
DO - 10.1016/j.ijhydene.2018.12.038
M3 - Article
AN - SCOPUS:85059473381
SN - 0360-3199
VL - 44
SP - 3013
EP - 3020
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 5
ER -
