AU2020101433A4 - Ttriboelectric nanogenerator based on teflon/vitamin B powder for humidity sensing - Google Patents
Ttriboelectric nanogenerator based on teflon/vitamin B powder for humidity sensing Download PDFInfo
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- AU2020101433A4 AU2020101433A4 AU2020101433A AU2020101433A AU2020101433A4 AU 2020101433 A4 AU2020101433 A4 AU 2020101433A4 AU 2020101433 A AU2020101433 A AU 2020101433A AU 2020101433 A AU2020101433 A AU 2020101433A AU 2020101433 A4 AU2020101433 A4 AU 2020101433A4
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- teng
- vitamin
- tvb
- powder
- teflon
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- 235000019156 vitamin B Nutrition 0.000 title claims abstract description 14
- 239000011720 vitamin B Substances 0.000 title claims abstract description 14
- 229930003270 Vitamin B Natural products 0.000 title claims abstract description 13
- 239000004809 Teflon Substances 0.000 title claims abstract description 12
- 229920006362 Teflon® Polymers 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 title claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011889 copper foil Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing
- G01N27/605—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing for determining moisture content, e.g. humidity
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/06—Influence generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/22—Methods relating to manufacturing, e.g. assembling, calibration
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
Recently, there has been a growing interest in triboelectric nanogenerators (TENGs)
due to the functionality of converting multiple inputs of mechanical energy into
electrical energy. In this patent, a novel Teflon/vitamin B powder based triboelectric
nanogenerator (TVB-TENG) is proposed. Paper is utilized as the supporting platform
for triboelectrification between commercial Teflon tape and Vitamin B powder. The
open-circuit voltage was approximately 340 V. TVB-TENG can be applied as humidity
sensor which exhibited a linear and reverse response to relative humidity (RH) of the
surrounding. Moreover, the RH are also reflected by the luminosity of the light-emitting
diodes (LEDs). The TVB-TENG proposed in this patent shows a cost-effective method
in the area of portable integration of power supply devices and sensing devices.
Attaching Attaching
Cu foil Cu foil
Pressing
Vitamin B
powder
Fig. 1
Separating
Approaching
Cu Paper Vitamin B powder Teflon tape
Fig. 2
Description
Attaching Attaching Cu foil Cu foil
Pressing Vitamin B powder
Fig. 1
Separating
Approaching
Cu Paper Vitamin B powder Teflon tape
Fig. 2
Editorial Note 2020101433 There is only four pages of the description
Ttriboelectric nanogenerator based on teflon/vitamin B powder for
humidity sensing
1. Technical Field
The present invention relates to the field of triboelectric nanogenerators (TENGs) and
sensing devices.
2. Background and Purpose
With the unprecedented advancements in Internet of Things (IoT) technology.
Environmental monitoring and intelligent community applications have been integrated
in IoT. Particularly, humidity sensing has been investigated by environmental
monitoring, agriculture, food safety, wearable electronics, and wireless sensor networks.
However, conventional power generation is needed to supply energy to these sensor
networks, which leads to increased energy usage and adverse impact on the
environment. Specifically, the destruction of urban environment has been showing
signs of increasing, which is closely related to the life standard of human beings.
Moreover, a variety of sensors are often placed in severe environmental conditions,
which restricts power supplies in such conditions. As a result, numerous researches
focus on the methods for harvesting energy from the surrounding environment and
turning it into electrical power. Though the design of portable electronics and wireless
sensor systems which harvest energy from the environment, the adverse environmental
effects caused by battery-powered systems can be mitigated. Hence, investigations of
self-powered sensors which harvest energy from the surrounding environment is highly
sustainable.
To meet these demands, a novel Teflon/vitamin B powder based triboelectric
nanogenerator (TVB-TENG) is proposed. Owing to its sustainability and flexibility,
paper substrate is suitable to be used as a supporting structure. The conductive electrode
is made of copper foil, while the triboelectric pair is comprised of Teflon tape and
Vitamin B powder. The approximate values of output power density of the TVB-TENG
can reached 120.13 [W/cm2. In addition, the approximate values of open-circuit
voltage (Voc) and short-circuit current (Isc) of this device were 340V, 46.3 [A,
respectively. These results indicate that sufficient power can be supplied to systems
with low power requirements. The self-powered TVB-TENG designed in this study can
be used to measure the relative humidity with good linearity and reversibility.
Furthermore, the light-emitting diodes (LEDs) are integrated with the humidity sensor
and through the luminosity of it reflected the RH from the surrounding environment.
3. Brief Description of the Drawings
Figure 1: The manufacturing process of the TVB-TENG structure.
Figure 2: The working mechanism of the TVB-TENG structure.
Figure 3: (a) The output voltage (matched load of 100 MQ) and (b) short-circuit current
(matched load of 100 KQ). (c) The output voltage and short-circuit current changed
with the load resistance. (e) TVB-TENG with a full-wave bridge rectifier for charging
a 1 nF capacitor. In one cycle, 87 nC of charge is transferred. (f) The reliability of TVB
TENG was studied through 500 working cycles.
Figure 4: (a)-(e) Output voltage sensor feedback for different humidity levels (40%,
%, 60%, 70%, and 80%). (f)Voltage comparison under different humidity conditions.
Figure 5: (a) Invertibility of humidity sensor based on TVB-TENG (b) The luminosity
of thirty LEDs under different relative humidity conditions.
4. Detailed Implementation Description
The conductive copper foil tape is used as the electrode, while the paper on the bottom
facilitates as a supporting platform. Teflon tape is cut to the desired size and pasted to
the bottom of the conductive copper foil tape as one of the triboelectric pair. In addition, vitamin B powder with double-sided tape pressed on the bottom of the other conductive copper foil tape, work as another triboelectric pair. The fabrication process of TVB TENG proposed in this study is illustrated in Figure. 1.
As shown in Figure. 2, the working mechanism of TVB-TENG is based on contact triboelectrification and electrostatic induction. First, when the device is compressed externally, electrons are transferred from the B vitamin membrane to the Teflon membrane. The contact surface between the vitamin B membrane and the Teflon membrane will be separated once the external force disappears. There is a positive charge transfer from the bottom conductive copper foil tape of the TVB-TENG to the top conductive copper foil tape, which lead to electric field equilibrium due to electrostatic induction. As a result, potential differences between electrodes are generated and established. Subsequently, when the TVB-TENG is pressed again, the triboelectrification principle produces the opposite potential difference. Therefore, it is expected that TVB-TENG can produce a stable power output under the sustained effect of external forces. The potential distribution is simulated to obtain a comprehensive understanding of this phenomenon.
An oscilloscope (probe:100 MQ) was used to measure the voltage across the external load (a variable resistor). The output current can be calculated according to the measured voltage and load resistance. As is illustrated in Figure. 3(a) and (b), the output voltage and the current reached a peak of 340 V and 46.3 [A, corresponding to load resistance of 100 MQ and 100 Kf, respectively. As shown in Figure. 3(c), when the load resistance was increased from 100 Kl to 100 MQ, the measured output voltage shows an increasing trend. As shown in Figure. 3(d), the output power reached its peak 2402.5 W at loading resistance of 10 MQ. Accordingly, the fabricated TENG's internal resistance was close to 10 MQ. Consequently, considering the size of the fabricated TENG (4cmx5cm), the peak power density is 120.13 [W/cm2. Since an external resistance of 100 MQ is much larger than 10 MQ (roughly equal to the internal resistance), the output voltage (at 100 MQ load) is approximated as the open circuit voltage. Similarly, for a load of 100 K, the corresponding output current can be regarded as the short circuit current. In addition, as shown in Figure. 3(e), the charging capacity of the prepared TVB-TENG was investigated by integrated a full-wave rectifier bridge in it to charge a lnF capacitor. The maximum capacitive voltage is 87V, and in one cycle, 87nC charge is transferred. The reliability of manufactured TVB TENG are also investigated, as shown in Figure. 3(f), the output voltage of the TENG remains steady after 500 external force testing cycles.
The performance of humidity sensor's response to the RH change are illustrated in Figuer.4 (i). The dynamic change between the output voltage and RH can be derived through the 2D graph. Obviously, as the RH increased, there was a declining trend in the output signal. Fig.4 (a)-(e) shows the output voltage of TVB-TENG with a change in RH. This further confirms that, there was a decrease in the output signal when the RH increased. Moreover, the output voltages of 331 V, 247 V, 180 V, 137 V and 105 V corresponds to RH levels of 50%, 60%, 70%, 80%, and, 90%, respectively. The results show that the sensor based on TVB-TENG can provide good response to environmental humidity change.
Furthermore, the reversibility of the TVB-TENG about humidity sensing characteristics is also studied as shown in Figure. 5(a). Thirty blue LEDs were connected to the TENG humidity sensor as real time indications for reflecting changes in the RH. The tests were conducted in environments with different RHs and the brightness of the LEDs was an indicator which reflected the change in the RH. As illustrated in Fig.5 (b), when the surrounding humidity changes drastically, the system can trigger an alarming indication.
Claims (3)
1. The conductive copper foil tape is used as the electrode, while the paper on the
bottom facilitates as a supporting platform. Teflon tape is cut to the desired size and
pasted to the bottom of the conductive copper foil tape as one of the triboelectric pair.
In addition, vitamin B powder with double-sided tape pressed on the bottom of the other
conductive copper foil tape, work as another triboelectric pair.
2. The performance of humidity sensor's response to the RH change are illustrated in
Figuer.4 (i). The dynamic change between the output voltage and RH can be derived
through the 2D graph. Obviously, as the RH increased, there was a declining trend in
the output signal. Fig.4 (a)-(e) shows the output voltage of TVB-TENG with a change
in RH. This further confirms that, there was a decrease in the output signal when the
RH increased. Moreover, the output voltages of 331 V, 247 V, 180 V, 137 V and 105 V
corresponds to RH levels of 50%, 60%, 70%, 80%, and, 90%, respectively.
3. The reversibility of the TVB-TENG about humidity sensing characteristics is also
studied as shown in Figure. 5(a). Thirty blue LEDs were connected to the TENG
humidity sensor as real time indications for reflecting changes in the RH. The tests were
conducted in environments with different RHs and the brightness of the LEDs was an
indicator which reflected the change in the RH. As illustrated in Fig.5 (b), when the
surrounding humidity changes drastically, the system can trigger an alarming indication.
Fig. 2 Fig. 1
Fig. 3
Fig. 5 Fig. 4
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020101433A AU2020101433A4 (en) | 2020-07-21 | 2020-07-21 | Ttriboelectric nanogenerator based on teflon/vitamin B powder for humidity sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020101433A AU2020101433A4 (en) | 2020-07-21 | 2020-07-21 | Ttriboelectric nanogenerator based on teflon/vitamin B powder for humidity sensing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020101433A4 true AU2020101433A4 (en) | 2020-08-27 |
Family
ID=72146325
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020101433A Ceased AU2020101433A4 (en) | 2020-07-21 | 2020-07-21 | Ttriboelectric nanogenerator based on teflon/vitamin B powder for humidity sensing |
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| Country | Link |
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| AU (1) | AU2020101433A4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593436A (en) * | 2020-12-19 | 2021-04-02 | 桂林理工大学 | Preparation method of sisal fiber paper-based friction nano-generator |
| CN115541654A (en) * | 2022-11-30 | 2022-12-30 | 武汉大学 | Device and method for detecting water content of insulating oil of nano generator with oil-solid friction |
-
2020
- 2020-07-21 AU AU2020101433A patent/AU2020101433A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593436A (en) * | 2020-12-19 | 2021-04-02 | 桂林理工大学 | Preparation method of sisal fiber paper-based friction nano-generator |
| CN115541654A (en) * | 2022-11-30 | 2022-12-30 | 武汉大学 | Device and method for detecting water content of insulating oil of nano generator with oil-solid friction |
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|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |