Vertically-aligned lead-free BCTZY nanofibers with enhanced electrical properties for flexible piezoelectric nanogenerators

Wu, Yinghong; Ma, Fang; Qu, Jingkui; Luo, Ying; Lv, Caixia; Guo, Qiang; Qi, Tao

doi:10.1016/j.apsusc.2018.10.229

Cited by 19 publications

(20 citation statements)

References 39 publications

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“…Morphology of fillers also plays a significant role in performances of PENGs. [ 23–30 ] Park et al [ 23 ] reports a BT nanoparticles filled PDMS composite exhibiting an open‐circuit voltage of 3.2 V and a short‐circuit current of 350 nA. A composite PENG of BT nanowires/PDMS exhibiting an open‐circuit voltage of 7 V and a short‐circuit current of 360 nA.…”

Section: Introductionmentioning

confidence: 99%

“…Studies reveal that high dimensional piezoeletric fillers are feasible in greatly enhancing performances of PENGs due to the enhanced continuity of fillers. [ 27,28 ] However, to our best knowledge, there is no report on the PENG using flower‐like high‐piezoelectric fillers, while the unique merits of the high spatial continuity of the fillers in composites are expected to play a significant role in performance enhancement of PENGs.…”

Section: Introductionmentioning

confidence: 99%

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3D BaTiO₃ Flower Based Polymer Composites Exhibiting Excellent Piezoelectric Energy Harvesting Properties

Jian

Jiao

Meng

et al. 2020

Adv Materials Inter

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Piezoelectric nanogenerators (PENGs) with good flexibility and high outputs have promising applications in harvesting mechanical energy and powering electronics. In this study, a synthesis of hierarchical BaTiO3 flowers (BTFs) and their filling into the polydimethylsiloxane (PDMS) matrix to obtain composites with excellent energy harvesting properties is reported. The BTF‐based PENG possesses a voltage of 260 V, a current of 50 µA, and a power of 1728 µW under a compression of 50 N at 3.5 Hz, which output power is two orders higher than that of polymer composites filled with BT nanoparticles. Simulation indicates that the high local stress at petals of BTFs is the main reason for the enhanced performances. The PENG shows good durability under 5000 cycles and lights up 58 commercial light emitting diodes and a display. The PENG generates 30–100 V in harvesting human motions of hand slapping and foot stepping and ≈50 V in harvesting the sport kinetic energy of basketball bouncing. This research presents a BTF‐based PENG with significantly enhanced energy harvesting performances for applications in micro/nanoenergy systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D BaTiO₃ Flower Based Polymer Composites Exhibiting Excellent Piezoelectric Energy Harvesting Properties

Jian

Jiao

Meng

et al. 2020

Adv Materials Inter

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“…Many rigid fillers are also added to PEGs with a goal of boosting the device output and overall performance. [23,[27][28][29] Interfacial slip between high TECD polymers in a PEG device generates friction based CE output analogous to the contact sliding mode of TEGs (Figure 2 b, interfacial shear). As fluoropolymers themselves are high TECD materials, slip between metallic electrodes and the fluoropolymer during testing induces CE similar to the single polymer shear mode for TEGs.…”

Section: The Piezoelectric Effect and Contact Electrification In Polymersmentioning

confidence: 99%

“…As fluoropolymers themselves are high TECD materials, slip between metallic electrodes and the fluoropolymer during testing induces CE similar to the single polymer shear mode for TEGs. Interfacial slip can also occur between mechanically mismatched rigid fillers (often ceramics) [22,27,29] and the piezoelectric polymer This article is protected by copyright. All rights reserved.…”

Section: The Piezoelectric Effect and Contact Electrification In Polymersmentioning

confidence: 99%

“…force applied, without breaking physical contact with the polymer (Figure 5 b). [29] This approach is taken in commercial piezoelectric measurement devices such as the PIEZOTEST d33 Piezometer system, as reported by Wu et al, [29] although conformal contact with no-slip is still required to limit surface charge generation from friction. Through proper testing, that is, eliminating the role of CE and static charge, true piezoelectric figures of merit can be reported.…”

Section: Demonstration and Mitigation Of Ce In Pegsmentioning

confidence: 99%

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Measuring Piezoelectric Output—Fact or Friction?

et al. 2020

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Piezoelectric polymers are emerging as exceptionally promising materials for energy harvesting.While the theoretical figures of merit for piezoelectric polymers are comparable to ceramics, the measurement techniques need to be retrofitted to account for the different mechanical properties of the softer polymeric materials. Here, how contact electrification is often mistaken for piezoelectric charge is discussed, through friction and contact separation, and a perspective for how to separate these effects is provided. The state of the literature is assessed, and recommendations are made for This article is protected by copyright. All rights reserved.clear and simple guidelines in reporting, for both sample geometry and testing methods, to enable accurate determination of piezoelectric figures of merit in polymers. Such improvements will allow an understanding of what types of material manipulation are required in order to enhance the piezoelectric output from polymers and enable the next generation of polymer energy harvester design.

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Measuring Piezoelectric Output—Fact or Friction?

Šutka¹,

Sherrell²,

Shepelin³

et al. 2021

Advanced Materials

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Piezoelectric polymers are emerging as exceptionally promising materials for energy harvesting.While the theoretical figures of merit for piezoelectric polymers are comparable to ceramics, the measurement techniques need to be retrofitted to account for the different mechanical properties of the softer polymeric materials. Here, how contact electrification is often mistaken for piezoelectric charge is discussed, through friction and contact separation, and a perspective for how to separate these effects is provided. The state of the literature is assessed, and recommendations are made for This article is protected by copyright. All rights reserved. clear and simple guidelines in reporting, for both sample geometry and testing methods, to enable accurate determination of piezoelectric figures of merit in polymers. Such improvements will allow anunderstanding of what types of material manipulation are required in order to enhance the piezoelectric output from polymers and enable the next generation of polymer energy harvester design.Received: ((will be filled in by the editorial staff))Revised: ((will be filled in by the editorial staff))

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Vertically-aligned lead-free BCTZY nanofibers with enhanced electrical properties for flexible piezoelectric nanogenerators

Cited by 19 publications

References 39 publications

3D BaTiO₃ Flower Based Polymer Composites Exhibiting Excellent Piezoelectric Energy Harvesting Properties

3D BaTiO₃ Flower Based Polymer Composites Exhibiting Excellent Piezoelectric Energy Harvesting Properties

Measuring Piezoelectric Output—Fact or Friction?

Measuring Piezoelectric Output—Fact or Friction?

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Vertically-aligned lead-free BCTZY nanofibers with enhanced electrical properties for flexible piezoelectric nanogenerators

Cited by 19 publications

References 39 publications

3D BaTiO3 Flower Based Polymer Composites Exhibiting Excellent Piezoelectric Energy Harvesting Properties

3D BaTiO3 Flower Based Polymer Composites Exhibiting Excellent Piezoelectric Energy Harvesting Properties

Measuring Piezoelectric Output—Fact or Friction?

Measuring Piezoelectric Output—Fact or Friction?

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3D BaTiO₃ Flower Based Polymer Composites Exhibiting Excellent Piezoelectric Energy Harvesting Properties

3D BaTiO₃ Flower Based Polymer Composites Exhibiting Excellent Piezoelectric Energy Harvesting Properties