Fatigue-resistant high-performance dielectric elastomer generator in alternating current method

Xu, Zisheng; Tan, Jianbo; Chen, Haojie; Di, Kui; Bao, Kunwei; Cheng, Jinzhan; Xie, Xinjun; Zheng, Shaodi; Lin, Shizhe; Cai, Jiancheng; Cheng, Tinghai; Liu, Liwu; Wang, Zhong Lin; E, Shi Ju

doi:10.1016/j.nanoen.2023.108314

Cited by 9 publications

(4 citation statements)

References 34 publications

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“…In which, C 0 and C 1 are the individual capacitances, and the maximum capacitance change, that is, the maximum charge production and transfer could be achieved at C 0 = 2 C 1 . [ 51 ] As continuous stretch‐relaxation, charges shuttle between the DEC and the pump circuit continuously switches between the C H and C L . Positive and negative charge carriers will be separated through the diode D 3 , causing the total charge in the AC‐DEG to rise.…”

Section: Resultsmentioning

confidence: 99%

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An Integrated Charge Excitation Alternative Current Dielectric Elastomer Generator for Joint Motion Energy Harvesting

Xie,

Zheng,

Tan

et al. 2024

Adv Materials Technologies

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Joint movement is a plentiful source of energy in living organisms; however, it is challenging to harvest due to its multidirectional nature, and effective technologies for harnessing this energy are lacking. In this study, a novel approach is presented to harvest joint motion energy by combining an alternating current dielectric elastomer generator (AC‐DEG) with an electret nanogenerator (ENG). The ACENG‐DEG, utilizing ion hydrogel electrodes and ENG, exhibits remarkable stretchability (860%) and efficiently converts mechanical energy into electrical energy through a stretch‐based mechanism. With only 37 cycles, the device reaches a saturation voltage of 1.18 kV and generates an output charge of 1.96 µC per cycle. Notably, the charge output response speed is approximately four times faster than that of traditional AC‐DEGs. The proposed strategy for harvesting human mechanical energy in this study represents a promising pathway for developing high‐performance energy harvesting devices and self‐powered systems.

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Section: Resultsmentioning

confidence: 99%

“…Positive and negative charge carriers will be separated through the diode D 3 , causing the total charge in the AC‐DEG to rise. Based on our previous work, [ 51 ] the transferred charge of AC ENG ‐DEG in the kth cycle, Δ Q k , can be expressed as:…”

Section: Resultsmentioning

confidence: 99%

An Integrated Charge Excitation Alternative Current Dielectric Elastomer Generator for Joint Motion Energy Harvesting

Xie,

Zheng,

Tan

et al. 2024

Adv Materials Technologies

Self Cite

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show abstract

“…Figure 1b displays a typical sleep architecture, which represents the cyclic pattern of sleep ( 21 ). Numerous energy harvesters were developed in the past decades ( 23 ). Wherein TENGs can convert mechanical energy in the environment into electrical energy for self-power supply, and obtain information regarding environmental changes by analyzing the generated electrical signals ( 24 , 25 ), even improve the overall performance of the system ( 26 ).…”

Section: Teng and Sleep Disordersmentioning

confidence: 99%

Sleep monitoring based on triboelectric nanogenerator: wearable and washable approach

Zhu

2023

Front. Psychiatry

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“…Dielectric elastomer (DE), as an intelligent soft materials with excellent actuation performance, has been extensively researched and applied in the soft robotics [1][2][3][4], controllable acoustic and optical devices [5][6][7], energy generators and transportation [8][9][10], flexible grippers [11][12][13], and biomedical treatment [14,15] due to its features of large deformation, fast response, and high energy density, and so on. Among diverse dielectric elastomer actuator (DEA) configurations [16], the pure shear deformation-based actuator structure has become one of the essential configurations thanks to its linear output as well as suppression of the electromechanical instability in DE [17,18].…”

Section: Introductionmentioning

confidence: 99%

Modeling of rigidly-constrained pure shear dielectric elastomer actuators: electromechanical coupling network method

Sun,

Liang,

Zhang

et al. 2024

Smart Mater. Struct.

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The rigidly-constrained pure shear dielectric elastomer actuator (PS-DEA) has become one of the critical configurations in linear soft actuator design due to its excellent uni-directional actuation performance and convenient preparation process. However, the theoretical analyses are primarily conducted by employing ideal models and lack consideration of the lateral necking deformation of PS-DEA, which has an essential impact on the performance evaluation and optimal design of PS-DEA. Therefore, in this paper, a user subroutine that describing the behavior of the electromechanical behavior of DE in terms of the Gent free-energy model is developed, and then a parametric model of the PS-DEA is established. Different combinations of actuator parameters are obtained by Latin hypercube sampling, and the actuator's performance under the parameters is simulated by the finite element method. The finite element results are taken as a sample set, and a BP neural network with three hidden layers is employed to train the samples and obtain a PS-DEA network prediction model, which is experimentally analyzed to validate its accuracy and effectiveness. The prediction model explores the influence of geometric and pre-stretching parameters on the actuator’s performance and obtains the difference between the ideal theoretical and the network prediction model under various parameters. The method in this paper provides a new design methodology and theoretical basis for developing high-performance dielectric elastomer actuators.

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Fatigue-resistant high-performance dielectric elastomer generator in alternating current method

Cited by 9 publications

References 34 publications

An Integrated Charge Excitation Alternative Current Dielectric Elastomer Generator for Joint Motion Energy Harvesting

An Integrated Charge Excitation Alternative Current Dielectric Elastomer Generator for Joint Motion Energy Harvesting

Sleep monitoring based on triboelectric nanogenerator: wearable and washable approach

Modeling of rigidly-constrained pure shear dielectric elastomer actuators: electromechanical coupling network method

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