3 research outputs found
High-Voltage Flexible Microsupercapacitors Based on Laser-Induced Graphene
High-voltage energy-storage
devices are quite commonly needed for
robots and dielectric elastomers. This paper presents a flexible high-voltage
microsupercapacitor (MSC) with a planar in-series architecture for
the first time based on laser-induced graphene. The high-voltage devices
are capable of supplying output voltages ranging from a few to thousands
of volts. The measured capacitances for the 1, 3, and 6 V MSCs were
60.5, 20.7, and 10.0 μF, respectively, under an applied current
of 1.0 μA. After the 5000-cycle charge–discharge test,
the 6 V MSC retained about 97.8% of the initial capacitance. It also
was recorded that the all-solid-state 209 V MSC could achieve a high
capacitance of 0.43 μF at a low applied current of 0.2 μA
and a capacitance of 0.18 μF even at a high applied current
of 5.0 μA. We further demonstrate the robust function of our
flexible high-voltage MSCs by using them to power a piezoresistive
microsensor (6 V) and a walking robot (>2000 V). Considering the
simple,
direct, and cost-effective fabrication method of our laser-fabricated
flexible high-voltage MSCs, this work paves the way and lays the foundation
for high-voltage energy-storage devices
High-Voltage Flexible Microsupercapacitors Based on Laser-Induced Graphene
High-voltage energy-storage
devices are quite commonly needed for
robots and dielectric elastomers. This paper presents a flexible high-voltage
microsupercapacitor (MSC) with a planar in-series architecture for
the first time based on laser-induced graphene. The high-voltage devices
are capable of supplying output voltages ranging from a few to thousands
of volts. The measured capacitances for the 1, 3, and 6 V MSCs were
60.5, 20.7, and 10.0 μF, respectively, under an applied current
of 1.0 μA. After the 5000-cycle charge–discharge test,
the 6 V MSC retained about 97.8% of the initial capacitance. It also
was recorded that the all-solid-state 209 V MSC could achieve a high
capacitance of 0.43 μF at a low applied current of 0.2 μA
and a capacitance of 0.18 μF even at a high applied current
of 5.0 μA. We further demonstrate the robust function of our
flexible high-voltage MSCs by using them to power a piezoresistive
microsensor (6 V) and a walking robot (>2000 V). Considering the
simple,
direct, and cost-effective fabrication method of our laser-fabricated
flexible high-voltage MSCs, this work paves the way and lays the foundation
for high-voltage energy-storage devices
High-Voltage Flexible Microsupercapacitors Based on Laser-Induced Graphene
High-voltage energy-storage
devices are quite commonly needed for
robots and dielectric elastomers. This paper presents a flexible high-voltage
microsupercapacitor (MSC) with a planar in-series architecture for
the first time based on laser-induced graphene. The high-voltage devices
are capable of supplying output voltages ranging from a few to thousands
of volts. The measured capacitances for the 1, 3, and 6 V MSCs were
60.5, 20.7, and 10.0 μF, respectively, under an applied current
of 1.0 μA. After the 5000-cycle charge–discharge test,
the 6 V MSC retained about 97.8% of the initial capacitance. It also
was recorded that the all-solid-state 209 V MSC could achieve a high
capacitance of 0.43 μF at a low applied current of 0.2 μA
and a capacitance of 0.18 μF even at a high applied current
of 5.0 μA. We further demonstrate the robust function of our
flexible high-voltage MSCs by using them to power a piezoresistive
microsensor (6 V) and a walking robot (>2000 V). Considering the
simple,
direct, and cost-effective fabrication method of our laser-fabricated
flexible high-voltage MSCs, this work paves the way and lays the foundation
for high-voltage energy-storage devices