Delafossite type CuCo0.5Ti0.5O2 composite structure: A futuristic ceramics for supercapacitor and EMI shielding application
Source abstract
Abstract
Abstract Cu-based delafossite type CuCo0.5Ti0.5O2 composite structure has been synthesized via a simple chemical synthesis technique followed by a high-temperature sintering process. Structural investigations on the synthesized sample have been carried out by using XRD, FT-IR, and Raman spectroscopy techniques. Optical spectroscopy (UV–Vis and photoluminescence) study reveals beneficial information about the bandgap (Eg) and defect state density of CuCo0.5Ti0.5O2 composite structure, explaining the superior electrochemical and microwave shielding performance of the composite structure. Cyclic voltammetry and galvanostatic charge-discharge measurement within the potential window of −0.5 V to +0.4 V illustrate the pseudocapacitive nature of the sample with a specific capacitance value of ~ 283 F g-1 at a current density of 0.5 A g-1 which can retain up to ~ 86% of its original value after 2000th cycle. A 400 μm thin sample made of CuCo0.5Ti0.5O2 composite structure is capable to shield up to ~ 58 dB of incident electromagnetic (EM) wave energy at 16.5 GHz wavelength with absorption efficiency of ~ 52.5 dB. The electromagnetic interference (EMI) shielding effectiveness (SE) is found to be ~ 99.999% against the harmful electromagnetic interference in the 8–12 GHz frequency region.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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