Sponge‐Like Piezoelectric Polymer Films for Scalable and Integratable Nanogenerators and Self‐Powered Electronic Systems

Mao, Yanchao; Zhao, Ping; McConohy, Geoff; Yang, Hao; Tong, Yexiang; Wang, Xudong

doi:10.1002/aenm.201301624

Cited by 341 publications

(254 citation statements)

References 48 publications

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“…Sustainable and eco-friendly energy harvesting from surrounding environment, such as solar energy, wind, tide, and mechanical vibration, has attracted a great deal of attention as researchers attempt to solve the worldwide energy crisis. [ 1 ] Thus far, diverse types of energy sources have been converted into electricity based on various physical principles, such as piezoelectric, [2][3][4][5][6] thermoelectric, [7][8][9] and electromagnetic effects. [10][11][12] Among the various ambient energy sources, mechanical energy has attracted much research interest due to its universal availability.…”

mentioning

confidence: 99%

A Triboelectric Sponge Fabricated from a Cube Sugar Template by 3D Soft Lithography for Superhydrophobicity and Elasticity

Kim

Park

Jeon

et al. 2016

Adv Elect Materials

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nanogenerator (TENG). The output voltage and current from the TES increase up to peak-to-peak values of 450 V and 0.14 mA cm −2 , respectively. This is a ten-fold power enhancement compared to those of a control group (fl at PDMS fi lm) under the same mechanical force. The electrical output performance of the TES was measured under wide ranges of mechanical stress. Various TESs were also fabricated using different grain sizes of cube sugar for various pore sizes.The output voltage and current density increase with a decrease in the pore size of the TES. Compression measurements were also conducted to evaluate the resistance to deformation by external force. These experiments showed that the elastic modulus decreases by more than 30% in a sponge type-PDMS fi lm. Thus, the TES become more fl exible, and simultaneously the contact area by the micro structure increases when external mechanical force is applied. In addition, we report a very stable and high output performance of the TESs under a wide range of humidity conditions. We also show that a large number of light-emitting diodes (LEDs) can be powered by electrical output power generated by the TES under the application of mechanical strain, even in very humid conditions. Schematics for the fabrication procedure of the triboelectric sponge are shown in Figure 1 a. The fabricated TES was manufactured with 3D soft lithography with three sizes of sugar particles (see the Experimental Section for details of the fabrication steps). The sugar particles used here were commercially available in a nearby market. The cubic-shaped sugar particles used as casting templates are shown in Figure 1 c. It is seen that all sugar particles have a uniform cubic-shape. The three types of sugar particles used, large, medium, and small, have dimensions of 1500, 500, and 300 µm, respectively.As a result of casting and curing, highly porous and elastic PDMS thin fi lms were formed with the free-standing structure shown in Figure 1 a. The surface morphologies of TES fabricated with different diameters of the sugar particles are shown in Figure 1 c. This fi gure clearly shows that the PDMS sponge was very uniformly formed. Moreover, its microstructures were confi rmed by the scanning electron microscope image in Figure 1 d. To fabricate an electrical generator using the TES, thermally evaporated Au (100 nm) onto an acrylic substrate were located at one side of the TES. Then, four springs were fi xed between two electrodes for mechanical support and separation. A conceptually simplifi ed device scheme of the fabricated TES embedded generator is presented in Figure 1 b. Additionally, actual digital images of the TES are shown in Figure S1 (Supporting Information). For a fair comparison of Due to the global energy crisis and environmental problems such as global warming, energy harvesting technology has emerged as an alternative to current energy technology. Sustainable and eco-friendly energy harvesting from surrounding environment, such as solar energy, wind, tide, and mechanical vibratio...

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mentioning

confidence: 99%

A Triboelectric Sponge Fabricated from a Cube Sugar Template by 3D Soft Lithography for Superhydrophobicity and Elasticity

Kim

Park

Jeon

et al. 2016

Adv Elect Materials

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“…The current state-of-the-art technologies suffer from low energy density, making them bulky and costly. Piezoelectric nanostructures provide a practical way to harvest energy from the environment to power nanodevices and nanosystems [3,4,5]. They can also be used as novel self-powered sensing devices.…”

Section: Introductionmentioning

confidence: 99%

PMN-PT/PVDF Nanocomposite for High Output Nanogenerator Applications

Luo

Liu

et al. 2016

Nanomaterials

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The 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3(0.7PMN-0.3PT) nanorods were obtained via hydrothermal method with high yield (over 78%). Then, new piezoelectric nanocomposites based on (1−x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) nanorods were fabricated by dispersing the 0.7PMN-0.3PT nanorods into piezoelectric poly(vinylidene fluoride) (PVDF) polymer. The mechanical behaviors of the nanocomposites were investigated. The voltage and current generation of PMN-PT/PVDF nanocomposites were also measured. The results showed that the tensile strength, yield strength, and Young’s modulus of nanocomposites were enhanced as compared to that of the pure PVDF. The largest Young’s modulus of 1.71 GPa was found in the samples with 20 wt % nanorod content. The maximum output voltage of 10.3 V and output current of 46 nA were obtained in the samples with 20 wt % nanorod content, which was able to provide a 13-fold larger output voltage and a 4.5-fold larger output current than that of pure PVDF piezoelectric polymer. The current density of PMN-PT/PVDF nanocomposites is 20 nA/cm2. The PMN-PT/PVDF nanocomposites exhibited great potential for flexible self-powered sensing applications.

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“…Perovskite-typed ferroelectric materials have relatively high piezoelectric constant, such as (1- x )PbZn 1/3 Nb 2/3 O 3 - x PbTiO 3 (PZNT) [1], Pb-based lanthanum-doped zirconate titanates (PZT) [2], and BaTiO 3 [3], which have been widely applied in the self-powered sensors [4–6] and energy conversion devices [7, 8]. Some non-ferroelectric lead-free materials also have good piezoelectric properties, such as ZnO [9] nanorod-based nanogenerator could provide an output voltage of 2 V, which has been demonstrated to drive a small light-emitting diode (LED) [10].…”

Section: Introductionmentioning

confidence: 99%

Surfactant-Assisted Hydrothermal Synthesis of PMN-PT Nanorods

Liu

Luo

et al. 2016

Nanoscale Res Lett

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The effects of surfactant polyacrylate acid (PAA) on shape evolution of 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 (0.7PMN-0.3PT) nanorods were studied. The results revealed that the polyacrylic acid content had great influence on the morphology of 0.7PMN-0.3PT. With increasing PAA concentration from 0.45 to 0.82 g/ml, the ratio of perovskite phase (PMN-PT nanorod) increased, while the ratio of pyrochlore phase decreased. When the PAA concentration was 0.82 g/ml, pure 0.7PMN-0.3PT nanorods were obtained. However, when PAA concentration was higher than 0.82 g/ml, the excess of PAA would hindered their [100] orientation growth. The piezoelectric coefficient d33 of 0.7PMN-0.3PT nanorod was obtained by linear fitting, and the d33 value was 409 pm/V.

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Sponge‐Like Piezoelectric Polymer Films for Scalable and Integratable Nanogenerators and Self‐Powered Electronic Systems

Cited by 341 publications

References 48 publications

A Triboelectric Sponge Fabricated from a Cube Sugar Template by 3D Soft Lithography for Superhydrophobicity and Elasticity

A Triboelectric Sponge Fabricated from a Cube Sugar Template by 3D Soft Lithography for Superhydrophobicity and Elasticity

PMN-PT/PVDF Nanocomposite for High Output Nanogenerator Applications

Surfactant-Assisted Hydrothermal Synthesis of PMN-PT Nanorods

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