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Investigation of RC high-pass filter applications using a silver iodide-based electrochemical capacitor
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DOI：10.1039/D6NJ01862A.png)
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Abstract
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In this work; highly dispersed silver iodide particles were synthesized through a complexation-mediated route using hexamine; which played a dual role as a stabilizing and structure-controlling agent. Hexamine-stabilized silver iodide was systematically analyzed using a combination of microscopic; optical and surface characterization techniques to evaluate the morphology; spectral properties; structural features and elemental composition. The hybrid system was applied as an electrode material for electrochemical capacitor applications. For three electrode system; silver iodide-based electrode delivered a specific capacity of 223 and 164 C/g at the scan rate and current density of 4mV/s and 3 A/g; respectively. The asymmetric device; made with silver iodide as cathode and activated carbon (AC) as anode; delivered maximum specific power and energy density of 3361 W/kg and 21 Wh/kg; respectively. The device exhibited the capacity retention and Coulombic efficiency of 87 and 96%; respectively; after 5000 cycles. The fabricated capacitor was successfully implemented in a resistor-capacitor (RC) circuit for high-pass filter applications; where the device demonstrated the ability to selectively transmit high-frequency signals while suppressing low-frequency components.
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