Perspective on the development of high performance flexible piezoelectric energy harvesters

Khatua, Dipak Kumar; Kim, Sang‐Jae

doi:10.1039/d1tc06089a

Cited by 26 publications

(12 citation statements)

References 177 publications

(184 reference statements)

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“…4,6,[14][15][16][17][18] Among these polymers, piezoelectric polymers are a valuable class of active materials for the transduction of mechanical energy into electrical energy. [19][20][21][22][23] Piezoelectric polymer-based high-performance flexible nanogenerators and flexible sensors are highly attractive for applications in biomedical engineering and healthcare systems. 14,20,21,23 In terms of operation principles, the state-of-the-art piezopolymers fall into one of the three main categories: bulk piezopolymers, piezocomposites, and voided charged polymers.…”

Section: Introductionmentioning

confidence: 99%

Natural bioproducts’ hybridization creates transient dynamic electret nanogenerators

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Natural bioproducts’ hybridization creates transient dynamic electret nanogenerators

et al. 2023

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“…Integration of the exceptional wave-manipulating properties of phononic crystals (PnCs) with piezoelectric energy harvesting (PEH) systems has led to the enhancement of output electric power through the amplification of the input elastic-wave energy provided to piezoelectric devices [ 1 – 4 ]. The promising PEH technology converts ambient mechanical energy into usable electric energy owing to the direct piezoelectric effect [ 5 – 8 ]. Although conventional PEH has attracted considerable attention owing to its applications in Internet-of-Things [ 9 , 10 ], its output electric power degrades if the transferred elastic-wave energy is insufficient.…”

Section: Introductionmentioning

confidence: 99%

L-shape triple defects in a phononic crystal for broadband piezoelectric energy harvesting

Yoon

Shin

et al. 2022

Nano Convergence

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This study proposes a phononic crystal (PnC) with triple defects in an L-shape arrangement for broadband piezoelectric energy harvesting (PEH). The incorporation of defects in PnCs has attracted significant attention in PEH fields owing to properties such as energy localization and amplification near the defect. Several studies have been conducted to enhance output electric power of PnC-based PEH systems with single defects. However, it is susceptible to the limitations of narrow bandwidth. Recently, double-defect-incorporated systems have been proposed to widen the PEH bandwidth via defect-band splitting. Nevertheless, the PEH performance rapidly decreases in the frequency range between the split defect bands. The limitations of single- and double-defect-incorporated systems can be resolved by the incorporation of the proposed design concept, called the L-shape triple defects in a PnC. The isolated single defect at the top vertex of the letter ‘L’ compensates for the limitations of double-defect-incorporated systems, whereas the double defects at the bottom vertices compensate for the limitations of the single-defect-incorporated systems. Hence, the proposed design can effectively confine and harvest elastic-wave energy over broadband frequencies while enhancing the application of single and double defects. The effectiveness of the proposed design concept is numerically validated using the finite element method. In the case of a circular hole-type PnC, it is verified that the PnC with L-shape triple defects broadens the bandwidth, and improves the output voltage and electric power compared with those of single- and double-defect-incorporated systems. This study expands the design space of defect-incorporated PnCs and might shed light on other engineering applications of the frequency detector and elastic wave power transfer.

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“…Since 2006, the concept of piezoelectric energy harvesting, proposed by Wang et al, 1 using piezoelectric nanogenerator (PNGs) become a growing and a promising technology for converting random mechanical energy into electric energy through nanoscale piezoelectric materials. [2][3][4] Another biomechanical energy harvesting concept is the use of triboelectric nanogenerators. [5][6][7][8] However, despite their high electrical outputs, the impermanent nature of the triboelectric charges limits their long-term durability.…”

Section: Introductionmentioning

confidence: 99%

“…Fig 4. The simulated distribution by FEA of (a) mechanical stress and (b) piezoelectric potential under a compression of 2 N.…”

mentioning

confidence: 99%

The benefits of combining 1D and 3D nanofillers in a piezocomposite nanogenerator for biomechanical energy harvesting

et al. 2022

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Perspective on the development of high performance flexible piezoelectric energy harvesters

Abstract: Piezoelectric energy harvesting is the most effective technique to convert ubiquitous mechanical energy into electricity in comparison to other methods such as triboelectric and electromagnetic based mechanical energy harvesting. This...

Cited by 26 publications

References 177 publications

Natural bioproducts’ hybridization creates transient dynamic electret nanogenerators

Natural bioproducts’ hybridization creates transient dynamic electret nanogenerators

L-shape triple defects in a phononic crystal for broadband piezoelectric energy harvesting

The benefits of combining 1D and 3D nanofillers in a piezocomposite nanogenerator for biomechanical energy harvesting

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