scholarly journals Studies on surface modification of polypropylene composite bipolar plates using an electroless deposition technique

RSC Advances ◽  
2020 ◽  
Vol 10 (41) ◽  
pp. 24330-24342
Author(s):  
Rungsima Yeetsorn ◽  
Walaiporn Prissanaroon Ouajai ◽  
Kannika Onyu
Keyword(s):  
Surface Modification ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Electroless Deposition ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Combustion Engines ◽  
Bipolar Plates ◽  
Deposition Technique ◽  
Polypropylene Composite

The DMFC is predominantly noticeable because it can convert chemical energy directly into electrical energy with higher energy conversion efficiency (∼65%) compared to the efficiency of traditional combustion engines (40%) and with lower emissions.

Highly efficient functional GexPb1−xTe based thermoelectric alloys

2014 ◽  
Vol 16 (37) ◽  
pp. 20120-20126 ◽  
Author(s):  
Yaniv Gelbstein ◽  
Joseph Davidow
Keyword(s):  
Energy Conversion ◽  
Fuel Consumption ◽  
Conversion Efficiency ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
Electrical Power ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Efficient Implementation ◽  
Thermoelectric Devices

Methods for enhancement of the direct thermal to electrical energy conversion efficiency, upon development of advanced thermoelectric materials, are constantly investigated mainly for an efficient implementation of thermoelectric devices in automotive vehicles, for utilizing the waste heat generated in such engines into useful electrical power and thereby reduction of the fuel consumption and CO2 emission levels.

Strategies for extending charge separation in colloidal nanostructured quantum dot materials

2019 ◽  
Vol 21 (42) ◽  
pp. 23283-23300 ◽  
Author(s):  
Partha Maity ◽  
Hirendra N. Ghosh
Keyword(s):  
Solar Cell ◽  
Quantum Dot ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Charge Separation ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Colloidal Nanocrystals

Different processes are involved in a quantum dot sensitized solar cell (QDSC). This article reviews the probable ways to extend charge separation in colloidal nanocrystals for the elevation of solar to electrical energy conversion efficiency in QDSCs.

An Investigation of Energy Harvesting Using Electrostrictive Polymers

2005 ◽  
Vol 889 ◽  
Author(s):  
Kailiang Ren ◽  
Yiming Liu ◽  
Heath F Hofmann ◽  
Qiming Zhang
Keyword(s):  
Energy Density ◽  
Energy Harvesting ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Electromechanical Coupling ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Unique Property ◽  
Elastic Energy Density ◽  
Ac Field

ABSTRACTOwing to their low acoustic impedance, high elastic energy density, and relatively high electromechanical conversion efficiency, the electroactive polymers have begun to show the potential for energy harvesting or mechanical to electrical energy conversion. In addition, due to the electromechanical coupling in these materials the electric and mechanical properties of these polymers will depend on the imposed electrical and mechanical conditions. This paper discusses how to utilizing this unique property to maximum the energy conversion efficiency and the harvested electrical energy density in the electrostrictive polymers. As an example, we demonstrate that when a properly phased and externally applied electric AC field is superimposed on the mechanical cycle, an output electrical energy density of 39mJ/cm3 and mechanical-to-electrical conversion efficiency of about 10% can be obtained from the electrostrictive P(VDF-TrFE) based polymers.

scholarly journals Methods to Improve Energy Conversion Efficiency of Dielectric Elastomer Generators

2019 ◽  
Vol 804 ◽  
pp. 63-67
Author(s):  
Heng Tong Cheng ◽  
Zhen Qiang Song ◽  
Shijie Zhu ◽  
Kazuhiro Ohyama
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Input Voltage ◽  
Energy Conversion Efficiency ◽  
Stretch Ratio ◽  
Dielectric Elastomer ◽  
Conversion Performance ◽  
Ratio Range

Dielectric elastomer generators (DEGs) are based on the electromechanical response of the dielectric elastomer film sandwiched between the compliant electrodes on each side, which are capable of converting mechanical energy from diverse sources (e.g, ocean wave) into electrical energy. In essence, DEG is a voltage up-converter using mechanical energy to increase the electrical energy of the charge on a soft capacitor. We evaluated the effect of input voltage and the pre-stretch ratios on energy conversion efficiency of DEG. With a power supply of 2.2kV and pre-stretch ratio of 2, the maximum net electrical energy density and energy conversion efficiency in a single harvesting cycle were measured to be 413 J/kg and 15.8%, respectively. The experimental results showed that, with the higher input voltage and the larger stretch ratio range, higher the energy conversion performance of DEG can be achieved.

First-principles study on the electronic and optical properties of the orthorhombic CsPbBr3 and CsPbI3 with Cmcm space group

2021 ◽  
Author(s):  
Xianhao Zhao ◽  
Tianyu Tang ◽  
Quan Xie ◽  
like gao ◽  
Limin Lu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
First Principles ◽  
Energy Conversion Efficiency ◽  
Space Group ◽  
Absorbing Materials ◽  
Halide Perovskites ◽  
Lead Halide

The cesium lead halide perovskites are regarded as effective candidates for light-absorbing materials in solar cells, which have shown excellent performances in experiments such as promising energy conversion efficiency. In...

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