Flexible piezoelectric energy harvester with an ultrahigh transduction coefficient by the interconnected skeleton design strategy

Hao, Yijin; Hou, Yudong; Fu, Jing; Yu, Xiaole; Gao, Xin; Zhu, Ming‐Qiang

doi:10.1039/d0nr03056b

Cited by 23 publications

(21 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…98 showed that this structure had a high Young's modulus compared to pure PDMS and 0-3 type PZN-PZT/PDMS composite due to the existence of the interconnected skeleton structure that greatly improves stress transfer. 138 Therefore, porous ceramic-based ferroelectric composites with aligned structure can exhibit improved mechanical properties.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Porous ferroelectric materials for energy technologies: current status and future perspectives

Yan

Xiao

et al. 2021

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

Section: Mechanical Propertiesmentioning

confidence: 99%

Porous ferroelectric materials for energy technologies: current status and future perspectives

Yan

Xiao

et al. 2021

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…The flexible nature of the polymer‐based energy harvester makes it suitable for the appropriate technique for providing power to the flexible wearing electronic devices. [ 3 ] The simple production technique or cost‐effective method is highly required to reduce the overall cost of the flexible energy harvester. [ 4 ] Because of some of the electronic instruments depend on wireless operations, the use of flexible energy harvester is one of the essential techniques.…”

Section: Introductionmentioning

confidence: 99%

Investigation of high temperature vulcanized and room temperature vulcanized silicone rubber based on flexible piezo‐electric energy harvesting applications with multi‐walled carbon nanotube reinforced composites

et al. 2021

View full text Add to dashboard Cite

Flexible energy harvester can be able to produce continuous voltage output under the mechanical deformations. High temperature vulcanized (HTV) and room temperature vulcanized (RTV) silicone rubbers are used for making the flexible piezo‐electric energy harvester. A total of 1 and 2 phr of multi‐walled carbon nanotube (MWCNT) are used as the electrode material mixed with the rubber solution for the preparation of flexible electrode. Cyclic loading machine is used for the application of 2 Hz of bi‐axial load and uniaxial compression load in the specimen. One centimeter depth of displacement is applied during the bi‐axial cyclic loading and 4 mm amplitude of displacement is applied during the compression loading. Tensile and compression tests are performed to determine the engineering properties of the material. Tensile load withstanding value of the silicone rubber is increasing as increasing the MWCNT filler in the rubber. Tensile value of the pure HTV silicone rubber is 10.020 N and for 2 phr MWCNT reinforced rubber is 22.106 N. Compressive withstanding load of pure HTV rubber is 189.565 N and for 2 phr MWCNT reinforced rubber is 287.066 N. HTV silicone rubber is the highly stiffness material on compares with RTV rubber based on the tensile and the compressive value. Transmission electron microscopy, optical micrographs, and scanning electron microscope show the morphology of MWCNT and surface image of specimen. A total of 2 mm substrate based 2 phr MWCNT reinforced HTV flexible energy harvester undergo decrease in voltage during the cyclic loading due to breakage of electrode. A total of 2 phr MWCNT electrode‐based sample can be able to produce more output voltage than 1 phr MWCNT electrode‐based sample during bi‐axial and compression loading. More voltage is produced in the compression specimen than bi‐axial one.

show abstract

“…There is only a little enhancement of the V OC of the BCTZ/0.04Ag PEH compared to that of the BCTZ PEH, while the I SC of BCTZ/0.04Ag PEH significantly increases to 100 μA (peak–peak), which is 25% higher than that of BCTZ PEH (79 μA). As shown in Figure c and Table , the obtained power generation performance in BCTZ/0.04Ag PEH is much higher than that of other widely reported PEHs made of flexible and bulk piezoelectric materials. ,,,,,− Figure d shows the charging curve of the BCTZ and BCTZ/0.04Ag PEHs charging an electrolytic capacitor (22 μF, 25 V) under continuous vibration conditions (91 Hz and 1 g). While charging for 25 s, the capacitor was charged to a voltage of 6 V using the BCTZ PEH as a power supply; however, a much larger voltage of 10 V can be reached using the BCTZ/0.04Ag PEH as a power supply benefiting from the large current performance.…”

Section: Resultsmentioning

confidence: 88%

Tailored Ceramic–Metal Piezocomposite Energy Harvester with High Current Output by Controlling the Electrical Impedance

Zhao

Zheng

Hou

2022

ACS Appl. Electron. Mater.

Self Cite

View full text Add to dashboard Cite

The electrical energy obtained by the piezoelectric energy harvesters (PEHs) exhibits high voltage and low current (i.e., high impedance); thus, the electrical impedance needs to be converted to a sufficiently low level. In this work, an intuitive yet logical approach that can decrease the electrical impedance has been proposed by introducing Ag particles with high conductivity into Ba0.85Ca0.15Ti0.90Zr0.10O3 (BCTZ) ceramics to form ceramic–metal piezocomposites. The results show that the formed intragranular structure allows the piezocomposites to withstand a high poling electric field; meanwhile, the addition of Ag particles significantly reduces the electrical impedance. Thus, the BCTZ/0.04Ag piezocomposite simultaneously exhibits a high piezoelectric charge constant (d 33) and low electrical impedance. Furthermore, the BCTZ/0.04Ag PEH achieves a much larger current and power output at a smaller matching impedance compared to the BCTZ counterpart. This work provides an insight into solving the low-current problem of PEHs.

show abstract

Flexible piezoelectric energy harvester with an ultrahigh transduction coefficient by the interconnected skeleton design strategy

Abstract: The freeze-casted 2-2 type piezocomposite has an ultrahigh transduction coefficient of 58 213 × 10−15 m2 N−1, which is significantly better than those of previously reported composite materials.

Cited by 23 publications

References 34 publications

Porous ferroelectric materials for energy technologies: current status and future perspectives

Porous ferroelectric materials for energy technologies: current status and future perspectives

Investigation of high temperature vulcanized and room temperature vulcanized silicone rubber based on flexible piezo‐electric energy harvesting applications with multi‐walled carbon nanotube reinforced composites

Tailored Ceramic–Metal Piezocomposite Energy Harvester with High Current Output by Controlling the Electrical Impedance

Contact Info

Product

Resources

About