A dielectric elastomer and electret hybrid ocean wave power generator with oscillating water column

Du, Xiaozhen; Du, Lixiang; Li, Pengkai; Liu, Xiaotong; Han, Yi; Yu, Hong; Tao, Kai; Tang, Lihua

doi:10.1016/j.nanoen.2023.108417

Cited by 11 publications

(1 citation statement)

References 75 publications

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“…This brings about several advantages, including lightweight, good flexibility, high energy density, and high electromechanical coupling efficiency. Benefiting from these advantages, DEG can stably and efficiently recover mechanical energy from unstable dynamic sources characterized by oscillation or time variation, such as wave energy converters (WECs) and human movement converters (HMCs), − which makes it an excellent choice for emerging as portable and wearable electronic devices or distributed harvesting equipment and achieving green and sustainable development for human society, as shown in Figure a. , …”

Section: Introductionmentioning

confidence: 99%

Largely Enhanced Energy Harvesting Performance of Silicone-Based Dielectric Elastomer Generators through Controlling the Uniaxial Device Structure

Wu,

Dong,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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Dielectric elastomer generators (DEGs) offer a novel and sustainable energy solution that can efficiently convert mechanical energy from natural motion into electricity. Among various structures, uniaxial DEGs are particularly promising due to their simplicity. However, the ideal uniaxial configuration remains unclear, and a performance-enhancing principle has not been proposed. In this study, a silicone-based composite with exceptional dielectric and mechanical properties was fabricated, and a uniaxial DEG was designed with an adjustable aspect ratio (L/W) and its harvesting performance was systematically studied and improved. In addition, a three-dimensional finite element model is constructed to reveal the underlying mechanism by investigating the nonuniform deformation of the dielectric elastomer (DE) film and its effect on energy harvesting. The results indicate that DEGs with larger L/W exhibit more uniform and extensive deformation, which increases the electric field strength and is beneficial for performance enhancement. On the other hand, an excessively large L/W can lead to a rapid reduction in the permittivity of DE and an increase in charge leakage, which hinder performance enhancement. As a result, a well-designed DEG with a moderate L/W achieves the up-to-date highest power conversion efficiency of 40.5% and a high energy density (54.4 mJ/g), surpassing previously reported uniaxial DEGs.

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Section: Introductionmentioning

confidence: 99%

Largely Enhanced Energy Harvesting Performance of Silicone-Based Dielectric Elastomer Generators through Controlling the Uniaxial Device Structure

Wu,

Dong,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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Self‐Sustained Artificial Internet of Things Based on Vibration Energy Harvesting Technology: Toward the Future Eco‐Society

Li,

Sun,

Huang

et al. 2024

Adv Energy and Sustain Res

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Clean energy has emerged as the focal point of global energy and power development. With the advancement of 5G technology and the Internet of Things (IoT), the demand for sustainable energy supply has become more pressing, leading to widespread attention to vibration energy harvesting technology. This technology enables the conversion of vibrational energy from natural phenomena such as ocean waves and wind, as well as machinery operation and human activities, into electrical energy, thus supporting the expansion of self‐sustained IoT systems. This review provides an overview of the progress in vibration energy harvesting technology and discusses the integration of this technology with self‐powered sensors and artificial intelligence. These integrations are reflected in the enhanced accuracy of environmental monitoring, increased efficiency in intelligent transportation and industrial production, and improved quality of life through intelligent healthcare and smart home. Such applications demonstrate the significant potential of self‐sustained artificial IoT in promoting environmental sustainability and elevating the level of intelligent living. In summary, exploring and applying vibration energy harvesting technology to support the autonomous operation of IoT devices is key to building a more sustainable, intelligent, and interconnected world.

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Dielectric Elastomer Generators: Recent Advances in Materials, Electronic Circuits, and Prototype Developments

Gurjar,

Sadangi,

Kumar

et al. 2024

Adv Energy and Sustain Res

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The ongoing climate crisis requires innovative methods to maximize renewable and sustainable energy resources. There have been advancements in harvesting energy from ambient motions such as wind, ocean waves, and human movements. Dielectric elastomer generators (DEGs) are a promising option for energy harvesting due to their high energy density and compatibility with low‐frequency oscillations. This review provides an in‐depth overview of DEGs, including electroactive materials, electromechanical characterization, electronics for harvesting, interfacing circuits, prototypes, and challenges. DEGs have the potential to play a significant role in decarbonizing energy for both small‐ and large‐scale applications using ambient energy sources.

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A dielectric elastomer and electret hybrid ocean wave power generator with oscillating water column

Cited by 11 publications

References 75 publications

Largely Enhanced Energy Harvesting Performance of Silicone-Based Dielectric Elastomer Generators through Controlling the Uniaxial Device Structure

Largely Enhanced Energy Harvesting Performance of Silicone-Based Dielectric Elastomer Generators through Controlling the Uniaxial Device Structure

Self‐Sustained Artificial Internet of Things Based on Vibration Energy Harvesting Technology: Toward the Future Eco‐Society

Dielectric Elastomer Generators: Recent Advances in Materials, Electronic Circuits, and Prototype Developments

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