Rare Earth Based Nanocomposite Materials for Prominent Performance Supercapacitor: A Review

Abstract

Rare-earth-based nanocomposites are currently attracting extensive research interest in biology, medicine, physics, chemistry and material science owing to their optical, electrical and electronic properties, their stability and novel applications. Rare-earth based nanomaterials, especially rare earth oxides (Yttrium oxide, Gadolinium oxide, lanthanum oxide, cerium dioxide, etc.) have fascinated people's devotion owing to their good environmentally friendly and redox properties characteristics. Rare-earth based nanomaterials with exceptional electrochemical properties can be attained by simple, low-cost, environmentally friendly approaches such as hydrothermal/solvothermal method, electrodeposition method, atomic layer deposition method, etc. The electrochemical and microstructures properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, galvanostatic charge/discharge cycling, potentiostatic electrochemical impedance spectroscopy and cyclic voltammetry, in this review, we present a wide-ranging explanation of synthesis methods, morphology and electrochemical performance of numerous rare-earth based nanomaterials used in supercapacitors. We present in this review a brief overview of the recent and general progresses in their functionalization and synthesis.

Piezoelectric approaches to organic polymeric materials

“…Dielectric properties, encompassing various characteristics, with permittivity being one of the key parameters, describe how these materials respond to the application of an electric field. 109 Permittivity, denoted by ε, depicts a material's ability to store electrical energy under the application of an electric field. It also quantifies the ratio between the electric displacement field (D) and electric field (E) applied to the material.…”

“…Permittivity can be divided into relative permittivity (ε r ) and absolute permittivity (ε 0 ), where the former compares a material's ability to store charge with that of a vacuum, while the latter represents the material's intrinsic ability independent of any other material. 109,110 Dielectric materials can be distinguished from insulating materials, although the terms are occasionally used interchangeably. Dielectrics are designed to possess favorable dielectric properties, such as high ε and low electrical conductivity.…”

“…Unlike conductors, which readily allow the flow of charges, dielectric materials serve as electrical insulators due to their limited conductivity. Dielectric properties, encompassing various characteristics, with permittivity being one of the key parameters, describe how these materials respond to the application of an electric field 109 . Permittivity, denoted by ε , depicts a material's ability to store electrical energy under the application of an electric field.…”

“…It also quantifies the ratio between the electric displacement field ( D ) and electric field ( E ) applied to the material. Permittivity can be divided into relative permittivity ( ε r ) and absolute permittivity ( ε 0 ), where the former compares a material's ability to store charge with that of a vacuum, while the latter represents the material's intrinsic ability independent of any other material 109,110 …”

Unveiling a novel terpolymer-metal complex: A detailed exploration of synthesis, characterization, and its potential as an antimicrobial and antioxidant agent

“…Owing to the significant pharmacological activity of transition metal complexes as well as the possibility of employing them as functional materials, the construction of terpolymers using such complexes has progressed rapidly in recent years. The terpolymers have adverse applications in biological activity, thermally stable materials, wastewater disinfecting agents, antifouling paints, antimicrobial and therapeutic materials, gels and ointments for medical use, and treatment of wastewater for metal recovery [ 1 , 2 ]. The potential biological evaluation of compounds containing sulphur, oxygen and nitrogen received great attention.…”