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Charge Storage Behavior of β-FeSi2 Nanoparticles
Energy shortage has always been a hot topic for decades. New industries' development and more significant concern over environmental pollutions require high energy density and clean energy resources. Among all the energy sources, renewable clean energies have developed dramatically in recent years, however, they require storage systems such as batteries and supercapacitors. Their utilization along with the fast-growing market of portable electronic devices and electric vehicles provide a promising solution for the utilization of renewable energies. Usually, electrochemical energy storage devices such as batteries and supercapacitors work with liquid electrolytes, either organic or inorganic, which is usually toxic and harmful to the environment. However, we present a non-toxic, environmentally friendly, and cost-effective capacitor based on β-FeSi2 nanoparticles that work in air-saturated water vapor. Unlike traditional parallel double plate capacitors, an innovative interdigitated capacitor structure is employed. The device is electrically robust, can be reused many times, even after applying high voltage. The active material β-FeSi2 nanoparticles are spin-coated onto the gold interdigitated structure printed on the SiO2 substrate (4×4 mm2) using lithography. The interdigitated structure enables easier access for water molecules to the β-FeSi2 nanoparticles, compared to conventional double plate capacitors. The active material β-FeSi2 nanoparticles are produced via direct gas-phase synthesis and enable mass production at a low price. The β-FeSi2 nanoparticles-coated interdigitated capacitor tested in the air-saturated water vapor shows a specific capacitance, which is three orders of magnitude higher than the capacitance of the β-FeSi2 interdigitated capacitor tested under dry air. The interdigitated capacitor without β-FeSi2 thin film exhibits a negligible capacitance, compared to the interdigitated capacitor with nanoparticles. In this work, the effect of water vapor and β-FeSi2 nanoparticles during the ...
Charge Storage Behavior of β-FeSi2 Nanoparticles
Energy shortage has always been a hot topic for decades. New industries' development and more significant concern over environmental pollutions require high energy density and clean energy resources. Among all the energy sources, renewable clean energies have developed dramatically in recent years, however, they require storage systems such as batteries and supercapacitors. Their utilization along with the fast-growing market of portable electronic devices and electric vehicles provide a promising solution for the utilization of renewable energies. Usually, electrochemical energy storage devices such as batteries and supercapacitors work with liquid electrolytes, either organic or inorganic, which is usually toxic and harmful to the environment. However, we present a non-toxic, environmentally friendly, and cost-effective capacitor based on β-FeSi2 nanoparticles that work in air-saturated water vapor. Unlike traditional parallel double plate capacitors, an innovative interdigitated capacitor structure is employed. The device is electrically robust, can be reused many times, even after applying high voltage. The active material β-FeSi2 nanoparticles are spin-coated onto the gold interdigitated structure printed on the SiO2 substrate (4×4 mm2) using lithography. The interdigitated structure enables easier access for water molecules to the β-FeSi2 nanoparticles, compared to conventional double plate capacitors. The active material β-FeSi2 nanoparticles are produced via direct gas-phase synthesis and enable mass production at a low price. The β-FeSi2 nanoparticles-coated interdigitated capacitor tested in the air-saturated water vapor shows a specific capacitance, which is three orders of magnitude higher than the capacitance of the β-FeSi2 interdigitated capacitor tested under dry air. The interdigitated capacitor without β-FeSi2 thin film exhibits a negligible capacitance, compared to the interdigitated capacitor with nanoparticles. In this work, the effect of water vapor and β-FeSi2 nanoparticles during the ...
Charge Storage Behavior of β-FeSi2 Nanoparticles
Li, Fangfei (Autor:in) / Wiggers, Hartmut
05.08.2021
Hochschulschrift
Elektronische Ressource
Englisch
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