effective energy storage from a triboelectric nanogenerator - electrical energy storage systems
In order to sustainably power an electronic device by using a nano-generator to collect mechanical energy, energy storage is essential to provide a regulated and stable power output, which is usually achieved by a rectifier connecting two components directly
However, this can lead to low energy
Storage efficiency.
Here we design the charging cycle reasonably to maximize energy
Improves storage efficiency by regulating the charge flow in the system, which is demonstrated on a three-wave electro-nano generator by adding motion
Trigger switch.
Theoretical and experimental results show that the designed charging cycle can increase the charging rate and increase the maximum energy.
Storage efficiency is as high as 50%, and the saturation voltage is at least twice as high.
This is a progress in effectively storing the energy collected by nano-generators with the aim of using environmental mechanical energy to drive portable/wearable/implantable electronics.
The static part of Teng is made by attaching the aluminum foil to 10.
The 1 × 7 cuccm sub-board plate forms two rectangular electrodes, each of which is 5 × 7 cm in size and with a spacing of 1 cucmm. A 5 × 7-cm 50-
μ m FEP film attached along 5 × 15-side
The activity part adopts cm sub-board.
For the charging cycle of the design, two Ti Metal bands (
Each width is 1 cm and the spacing is 5 cm)
The moving part is connected in parallel to the other side of the acrylic plate and connected to the two electrodes respectively. Two Ti bars (7u2009cm in length)
Ready, too.
In order to operate the TENG during the designed charging cycle, the moving part is mounted on the linear motor, the static part and two Ti bars are mounted on 3 3-
In the dimension stage, the FEP surface is placed face-to-face with an Al electrode as shown.
Control the periodic movement of the linear motor between two Al electrodes with a displacement of 5. 1u2009cm.
Two Ti rods are removed in the direct charging cycle.
The TENG used to demonstrate the sustainable model is made in the same process and has twice the size.
Voltage and transfer charges are measured simultaneously by two Keithley 6,514 system meters.
The measurement circuit shown in the figure. Lithium-
Ion rechargeable coin battery was prepared on aluminum foil using LiCoO/carbon black/adhesive mixture (
1 diameter cm)
Polyethylene as anode (PE)as separator (
2 diameter cm)
, Graphite/carbon black/adhesive mixture on aluminum foil (1.
Diameter of 5 cm)as the cathode.
Electrolyte (
1 m LiPF in 1: 1-1 ethylene carbonate/Diester carbonate)
Before the coin battery is firmly pressed, it is injected between the anode and the cathode. The charging-
As shown, the discharge curves of these batteries were tested with a plateau voltage of 3. 8u2009V.
In our experiments, each battery can provide a voltage of 3-4 volt V.