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Article
Green & Sustainable Science & Technology
Jianwen Zhou et al.
Summary: This paper proposes a cam frequency-increasing hybrid piezoelectric electromagnetic energy harvester with a center symmetric structure. The experimental results demonstrate the potential of this harvester for powering wireless sensor networks and low-power electronic devices.
Article
Green & Sustainable Science & Technology
Jian-Xu Wang et al.
Summary: This paper proposes a trapezoid piezoelectric cantilever beam to improve the output of rotational piezoelectric energy harvesters. The finite element simulation and experimental results demonstrate that the trapezoid beam harvester can bear higher stress and exhibit excellent electrical output properties. The harvester has the characteristics of up-conversion frequency and ring-down pattern. Experimental results show that the prototype trapezoid beam harvester can generate a high average output power density under the matching impedance.
Article
Chemistry, Physical
Renjie Zhang et al.
Summary: The study successfully enhances structural stability, electrical conductivity, and electrolyte-accessibility through the hierarchical nanohybridization of 3D FeNi-LDH arrays on 2D MXene nanosheets, significantly improving redox reaction kinetics and resulting in outstanding capacitance behavior and energy densities.
Article
Energy & Fuels
Yuan Cai et al.
Summary: A novel energy harvester has been developed to capture the kinetic energy of pedestrians. Experimental results showed that the harvester has a high output voltage and power. After optimization, the device showed improved working efficiency. Outdoor tests confirmed the feasibility of using the device to harvest ultralow frequency kinetic energy of pedestrians.
Article
Thermodynamics
Iman Mehdipour et al.
Summary: This study focuses on finding the best combination of bluff body shape and flag configuration to enhance the harvesting of low-speed wind energy using vortex-induced vibration. Wind tunnel experiments were conducted to investigate the performance of different combinations, and the results showed that bluff bodies with higher drag coefficients can excite longer full active piezoelectric flags to generate more energy in low wind speeds. However, shorter full active flags generate more energy in higher wind speeds.
ENERGY CONVERSION AND MANAGEMENT-X
(2022)
Article
Chemistry, Physical
M. Toyabur Rahman et al.
Summary: This study introduces MOF-derived nanomaterials to enhance the energy harvesting performance of TENG, paving the way for new tribomaterials.
Article
Engineering, Electrical & Electronic
Licheng Deng et al.
Summary: The novel frequency self-tuning Vibration Energy Harvester (VEH) adjusts two parameters simultaneously to achieve frequency self-matching under rotating excitation, enabling frequency self-matching in the range of 10-20 Hz with easy spring design.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2021)
Article
Thermodynamics
Yu Du et al.
Summary: This paper presents a new hybrid generator that can effectively harvest energy from ocean fluids, especially suitable for ocean in situ power generation.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Materials Science, Multidisciplinary
Huirong Zhang et al.
Summary: This paper presents a direction adaptive energy harvester that can scavenge energy from multiple wind directions, with experiments showing optimal power outputs of 5.19mW for piezoelectric generation and 0.32mW for electromagnetic generation in a specific wind speed range.
Article
Green & Sustainable Science & Technology
Shuyun Wang et al.
Summary: An amplitude-limiting rotational piezoelectric energy harvester was presented to avoid damage to the piezoelectric vibrator due to excessive deformation during resonance. The study showed that reasonable parameter matching can effectively improve the energy generation capability and bandwidth of the energy harvester.
Article
Green & Sustainable Science & Technology
Gang Yu et al.
Summary: A novel mirror-image rotating piezoelectric energy harvester with multiple resonant frequencies was proposed, broadening the bandwidth and establishing a mathematical model. Experimental results show that under certain parameters, the device has high power generation efficiency, and can quickly power other devices.
Article
Green & Sustainable Science & Technology
Ding Luo et al.
Summary: This work proposes a novel fluid-thermal-electric multiphysics numerical model to predict the performance of thermoelectric generator systems applied to fluid waste heat recovery by considering the multiphysics coupling effects. The output power predicted by COMSOL coupled solver is 8.52% higher than that predicted by COMSOL separate solver. The TEG system's output performance predicted by ANSYS is less affected by inlet air boundary conditions than by COMSOL.
Article
Energy & Fuels
E. F. Rojas et al.
Summary: A reduced-order model considering material structure, size dependency, and surface smoothness effects was developed to study the performance of piezoelectric and/or flexoelectric systems at different scale levels. The study showed that at nanoscale, the combined piezoelectric and flexoelectric configuration and the flexoelectric only configuration perform similarly, but at transition scales, from nano to micro, the combined system outperforms either configuration. A non-smooth surface was found to increase the harvested power levels of the system in all cases, indicating that a piezoelectric-flexoelectric system can generate more power than previously thought near the microscale.
Article
Chemistry, Physical
Yingchun Su et al.
Summary: This study introduces a 3D piezoelectric spring structure that functions as a multifunctional sensor and is connected with LED/capacitor for efficient environment energy harvest and storage, demonstrating the potential for scale-up of piezoelectric energy generators.
Article
Chemistry, Physical
Yan Wang et al.
Summary: The study introduces an underwater flag-like Triboelectric Nanogenerator (UF-TENG) based on flow-induced vibration, which shows a simpler structure and better low velocity performance compared to traditional generators. Through parametric studies, it is demonstrated that UF-TENG can effectively harvest energy from ocean currents to power sensors or micro electric appliances in Internet of Things.
Article
Engineering, Electrical & Electronic
Xiudeng Wang et al.
Summary: This article proposes a multi-input synchronous electric charge extraction (MI-SECE) interface based on buck structure for piezoelectric energy harvesting, and both theoretical analysis and experimental test results demonstrate its effectiveness in extracting energy from multi-PZTs simultaneously with any phase difference.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Multidisciplinary
Bin Bao et al.
Summary: This research introduces a hand-held piezoelectric energy-harvesting structure for portable human-motion energy harvesting, and analyzes the dynamic changes of electric and magnetic fields during rotation through simulation and treadmill experiments. The results demonstrate that the device can generate a certain voltage at specific speeds and charge a capacitor accordingly.
Article
Robotics
Suryansh Sharma et al.
Summary: Hermes is a novel, low-cost, wireless, batteryless energy harvesting system designed for sensing wind speed and Angle of Attack (AoA) simultaneously. Utilizing piezoelectric films that flutter due to incoming wind, Hermes is able to determine wind speed and AoA accurately. The system can harvest an average power of 440 micro Watts and has high accuracy in estimating wind speed and AoA over a wide range of angles.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2021)
Article
Green & Sustainable Science & Technology
Chika C. Maduabuchi et al.
Summary: In this paper, a model based on the first and second laws of thermodynamics is developed and utilized to optimize a bismuth telluride based solar thermoelectric generator, exploring the effects of operational parameters on the performance of the generator. Results show that a high exergy efficiency can be achieved, and a method to reduce system irreversibilities is presented.
Article
Chemistry, Physical
Huanxin Su et al.
Summary: The development of wearable piezoelectric nanogenerator (PENG) using lead-free piezoelectric materials like Barium Titanate (BTO) has attracted attention. By preparing porous piezoelectric fillers composed of specific materials and utilizing flexible electrodes, the output performance of the PENG has been improved significantly, with a maximum open-circuit voltage of 39V and short-circuit current of 2.9μA achieved.
Article
Thermodynamics
Kai Yang et al.
Summary: A new concept of a wind energy harvester based on galloping and stochastic vibration energy is proposed and comprehensively investigated through wind tunnel experiments and theoretical study, showing that strong stochastic excitation intensity is beneficial for broadband energy harvesting. The study also reveals that a low structural natural frequency and a large aerodynamic mass ratio can improve harvester performance.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Ge Shi et al.
Summary: This study introduces an ultra-low frequency vibration energy harvester using a zigzag piezoelectric spring oscillator, which offers efficient energy output under slight vibrations in the external environment. The performance of the energy harvester can be optimized by adjusting the length of the spring and the mass of the ball, and experimental results demonstrate its potential to power low-power electronic devices and wireless sensor nodes.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Zhong Li et al.
Summary: The encapsulated sulfur electrode effectively addresses the shuttle effect of internal polysulfides, improving the cyclic performance of the battery.
Article
Materials Science, Multidisciplinary
Lili Xue et al.
Summary: This work presents a novel strategy to prepare highly integrated PVDF/conductive nylon core-sheath structure piezoelectric yarns for wearable devices, combining electrospinning strategy with 2D braiding technology. The fineness and strength of the yarn are significantly improved, and the electrical performance is affected by the length and thickness of the yarn. Both the piezoelectric yarn and fabric can generate piezoelectric output signals through human movement, demonstrating significant improvements in electrical and mechanical performance for wearable piezoelectric devices based on yarns and fabrics.
ADVANCED FIBER MATERIALS
(2021)
Article
Thermodynamics
Wan Sun et al.
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Engineering, Electrical & Electronic
Xiaobo Rui et al.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2020)
Article
Energy & Fuels
Rui Guo et al.
Article
Computer Science, Information Systems
Mahbubur Rahman Kiran et al.
Article
Energy & Fuels
Jorge Silva-Leon et al.
Article
Green & Sustainable Science & Technology
Tinghai Cheng et al.
Review
Green & Sustainable Science & Technology
Maryam Hamlehdar et al.
Article
Materials Science, Multidisciplinary
Lijun Yang et al.
