Air Cathode Built From Rice Husk Derived Air Plasma Exposed SiO 2 @Al‐Doped Cadmium Oxide Employed in Aluminum Air Batteries and Supercapacitor
Source abstract
Abstract
This study aims to enhance air cathodes in metal–air batteries by integrating aluminum‐doped cadmium oxide with plasma‐treated silicon dioxide. SiO 2 , extracted from rice husks, undergoes direct current glow discharge plasma treatment to improve surface properties, structural stability, and conductivity. Plasma treatment significantly enhances the SiO 2 surface, yielding a high specific capacitance of 640 F g −1 , improved catalytic activity, enhanced cyclic stability (coulombic efficiency of 99% and capacity retention of 94%), and increased hydrophilicity. When employed as the air cathode in an aluminum–air battery, the composite demonstrates efficient oxygen reduction reaction (ORR) kinetics, a discharge capacity of 33.33 mAh, and stable long‐term performance, successfully powering a light‐emitting diode (LED) for 5 days with an open‐circuit voltage of 1.12 V.
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Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Electrocatalysts for Energy Conversion · Ammonia Synthesis and Nitrogen Reduction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics Sri Vasavi College Erode India
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