scholarly journals Mathematical and Computer Modeling of Piezoelectric Generator for Energy Harvesting Devices

2019 ◽  
pp. 1-14
Author(s):  
A. N. Soloviev ◽  
D. A. Ermakov
Keyword(s):  
Energy Storage ◽  
Energy Harvesting ◽  
Computer Modeling ◽  
Numerical Experiments ◽  
Three Dimensional ◽  
Inertial Mass ◽  
Storage Device ◽  
Energy Storage Device ◽  
Piezoelectric Generator ◽  
Energy Harvesting Devices

The paper deals with modeling a Piezoelectric Generator (PEG) that includes piezoactive elements, inertial mass, plate and rack. The PEG under consideration can be an element of the energy storage device in the capacity of the source of energy provided from vibrations of elements of structures and machines.The main objective of the paper is to gain the PEG efficiency by finding the optimal geometric parameters for finding the highest output potential.The elastic and piezoceramic media are modeled within the framework of the linear theory of electroelasticity. As a research tool, CAE package ACELAN is used in which three-dimensional and axisymmetric device models are built. The numerical experiments performed a modal and harmonic analysis that enabled us to identify the most effective operating frequencies.

A novel cord-shaped supercapacitor with high stretchability

2019 ◽  
Vol 89 (19-20) ◽  
pp. 4265-4271
Author(s):  
Wenqi Nie ◽  
Shu Zhang ◽  
Xin Ding ◽  
Jiyong Hu ◽  
Xudong Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
Three Dimensional ◽  
Storage Device ◽  
High Porosity ◽  
Energy Storage Device ◽  
High Capacitance ◽  
Capacitive Performance ◽  
Integration Technology

Cord-shaped stretchable supercapacitors have received much attention due to their high stretchability and three-dimensional flexibility. For coaxial supercapacitors, lower capacitive performance and the inextensibility of the separation layer have been the important factors hindering further developments. In this work, we developed an integration technology to fabricate multiple yarn-electrodes by a layer-to-layer braiding. Between the inner and outer electrodes there is a braided elastic separator by braiding multiple spandex yarns. The braided separator features not only a reliable separation of the inner and outer electrodes, but also a high stretchability and high porosity. The cord-shaped supercapacitor shows an excellent capacitive performance of 60.1 mF/cm2 with energy density of 5.4 μWh/cm2, power density of 0.52 mW/cm2 and extremely high capacitance retention of 99.8% under the strain of 100%, demonstrating the application value of this stretchable energy storage device.

Design and validation of MEMS based micro energy harvesting and thermal energy storage device

2019 ◽  
Vol 6 (11) ◽  
pp. 115511 ◽  
Author(s):  
S Indirani ◽  
Sridhar P Arjunan ◽  
Y Jeyashree ◽  
G Naga Sai Ram ◽  
B Manoj Krishna ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Harvesting ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Storage Device ◽  
Energy Storage Device

scholarly journals Wind-induced vibration piezoelectric energy collection in ventilation tunnels

2021 ◽  
Vol 267 ◽  
pp. 01039
Author(s):  
Daiyong Zhou ◽  
Yin Lin ◽  
Gaojian Ren ◽  
Yan Shao
Keyword(s):  
Energy Storage ◽  
Wind Speed ◽  
Energy Harvesting ◽  
Electrical Energy ◽  
Storage Device ◽  
Maximum Output ◽  
Energy Storage Device ◽  
Piezoelectric Vibrator ◽  
Piezoelectric Energy ◽  
Wind Induced Vibration

Ventilation tunnel wind-induced vibration piezoelectric energy collection MFC as vibration energy in the ventilation tunnel and stores it in the energy storage device to provide the electrical energy required by the wireless sensor in the tunnel. According to the piezoelectric effect of piezoelectric materials, the instantaneous accumulated positive and negative charges generated at both ends of the piezoelectric vibrator at the instantaneous wind speed and wind vibration in the tunnel are collected. By establishing a piezoelectric energy collection model, the irregular transient charges are captured and stored as Available direct current. The piezoelectric energy harvesting model uses wind speed rotation as the traction force to drive the piezoelectric vibrator to vibrate, thereby converting wind energy into instantaneous electrical energy, and using the electrical energy harvesting device to store the electrical energy in the energy storage device. Experiments verify that when the wind-induced vibration piezoelectric energy collection model of the ventilation tunnel is at a wind speed of 8m/s, the maximum output voltage of the energy storage device is 42.2V, which can meet the power supply requirements of wireless sensors in the ventilation tunnel.

Dual Hybrid Energy Storage Device with a Battery–Electrochemical Capacitor Hybrid Cathode and a Battery-Type Anode

2021 ◽  
Author(s):  
Bincy Lathakumary Vijayan ◽  
Amina Yasin ◽  
Izan Izwan Misnon ◽  
Gopinathan M. Anilkumar ◽  
Fathalla Hamed ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Capacitor ◽  
Storage Device ◽  
Energy Storage Device ◽  
Hybrid Energy ◽  
Hybrid Energy Storage

scholarly journals Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4000
Author(s):  
Eunhwan Kim ◽  
Juyeon Han ◽  
Seokgyu Ryu ◽  
Youngkyu Choi ◽  
Jeeyoung Yoo
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
Lithium Ion ◽  
Electrochemical Energy Storage ◽  
Storage Device ◽  
Energy Storage Device ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Storage Ability ◽  
Electrochemical Energy

For decades, improvements in electrolytes and electrodes have driven the development of electrochemical energy storage devices. Generally, electrodes and electrolytes should not be developed separately due to the importance of the interaction at their interface. The energy storage ability and safety of energy storage devices are in fact determined by the arrangement of ions and electrons between the electrode and the electrolyte. In this paper, the physicochemical and electrochemical properties of lithium-ion batteries and supercapacitors using ionic liquids (ILs) as an electrolyte are reviewed. Additionally, the energy storage device ILs developed over the last decade are introduced.

Sign in / Sign up

Export Citation Format

Share Document