PDF Publication Title:
Text from PDF Page: 016
Figure 12. Single-electrode TENG in contact-separation mode. (a) Schematic diagram of the model for the calculation. (b) Finite element simulation of the potential distribution in the TENG for the different separation distances between the skin and PDMS film. (c) Total charges on the ITO electrode as a function of the separation distance between the skin and PDMS film. The increase in total charges is a result of the electron flow from ITO to ground. (d) Measured charge quantity when the applied pressure on the PDMS film was released. (e) Sketches that illustrate the electricity generation process in a full cycle. (I) Full contact between the human skin and PDMS film. (II) Two surfaces are separated with a small distance. (III) Two surfaces are separated with a large distance. (IV) Separated two surfaces are approaching. Reproduced with permission from ref 29. Copyright 2013 Wiley. separation distance between the PDMS and skin, no output signals can be observed, as illustrated. More- over, when the skin was reverted to approach the PDMS, the induced positive charges on the ITO elec- trode decrease and the electrons will flow from ground to the ITO electrode until the skin and PDMS fully contact with each other again, resulting in a reversed output voltage/current signal. This is a full cycle of the electricity generation process for the TENG in contact- separation mode. The mechanism of the single-electrode-based slid- ing TENG is schematically depicted in Figure 13a. In the original position, the surfaces of PTFE and Al fully overlap and intimately contact with each other. Ac- cording to the triboelectric series, the contact between the PTFE and Al will result in electrons being injected from Al to PTFE since PTFE is much more triboelectri- cally negative than Al. The produced negative tribo- electric charges can be preserved on the PTFE surface for a long time due to the nature of the insulator. Once the top PTFE with the negatively charged surface starts to slide outward, it will result in the decrease of the induced positive charges on the Al, thus the electrons flow from ground to Al, producing a positive current signal. When the top PTFE fully slides out of the bottom Al, the two triboelectric charged surfaces are entirely separated, and then an equilibrium state can be cre- ated with no output voltage/current. When the top PTFE plate is reverted to slide backward, the induced positive charges on the Al increase, driving the elec- trons to flow from Al to ground to produce a negative current signal. Once the two plates completely reach the overlapping position, the charged surfaces get into full contact again and there will be no change of the induced charges on the Al, thus no output current can be observed. This is a full cycle of the single-electrode- based sliding TENG working process. The electric potential distribution in the TENG and the charge transfer between the Al and ground can be verified through numerical simulation using COMSOL. The proposed model is based on a PTFE patch and an Al plate with the same dimensions (5 cm 8 cm 0.1 cm), as shown in the inset of Figure 13b. The triboelectric charge density on the PTFE was assumed to be 10 μC/m2. The Al plate was connected with the ground. Figure 13b depicts the calculated results of the electric potential distribution in the TENG under four different sliding distances of 0, 16, 26, and 40 mm. When two plates are fully overlapped, the electric potential on the PTFE surface approaches zero. When the top PTFE plate slides out with a displacement of 26 mm, the electric potential on the PTFE surface is up to 6000 V. It can be clearly seen that the electric potential difference between the PTFE and the Al increases dramatically with increasing sliding distance. As illu- strated in Figure 13c, the amount of the total charges on the Al plate decreases linearly with increasing sliding distance, indicating that the transferred charges between Al and the ground increase with the increas- ing sliding distance. Usually, the effective output power of the TENG depends on the match with the loading resistance. Figure 13d shows the resistance dependence of both output voltage and the output current density with the WANG VOL. XXX ’ NO. XX ’ 000–000 ’ XXXX P www.acsnano.org REVIEWPDF Image | Triboelectric Nanogenerators as New Energy Technology
PDF Search Title:
Triboelectric Nanogenerators as New Energy TechnologyOriginal File Name Searched:
13_ACSN_08.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)