Incorporating Gadolinium Oxide (Gd₂O₃) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application

Abstract

In this study, we synthesized gadolinium oxide nanoparticles (Gd2O3 NPs) incorporated heteroatom‐doped microporous carbon nanofibers (CNF) to serve as electrode materials for enhancing supercapacitive energy storage. Our primary focus is on elucidating the impact of these hybrid electrode materials on key supercapacitor performance properties such as specific capacitance, specific energy, and specific power. To comprehensively assess the structural and chemical attributes of Gd2O3 NPs‐incorporated heteroatom‐doped microporous CNFs (CNF/Gd2O3) we employed an array of advanced characterization techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy (RAMAN), X‐ray diffraction (XRD), and X‐ray photoelectron spectroscopy (XPS). Our research has yielded impressive results, demonstrating a significant increase in supercapacitive performance. Specifically, the CNF/Gd2O3‐1 symmetric supercapacitor cell (SSC) has demonstrated a good specific capacitance of 162.3 F/g and a high specific energy of 8.12 Wh/kg at a specific power of 300 W/kg. These findings could be a new pathway to prepare composite electrodes for use in energy storage applications and promote further development for other rare‐earth nanostructures.

In situ synthesis of europium oxide (Eu2O3) nanoparticles in heteroatom doped carbon nanofibers for boosting the cycling stability of supercapacitors

“…These structural features demonstrated that the synthesis of Eu 2 O 3 NPs with CNFs greatly enhanced the surface area compared to the pure CNFs, as also shown in our previous study. 57,58 Table 3 provides all data including the surface area ( S BET ), total pore volume ( V t ), pore volume fractions (%), and micropore diameter ( D ) for the synthesized CNF/Eu 2 O 3 -1 and CNF/Eu 2 O 3 -2 materials.…”

Sulfur-Enriched Nanoporous Carbon: A Novel Approach to CO2 Adsorption

“…This heightened attention is a result of their advantageous characteristics, which encompass a remarkable specific surface area, robust thermal and chemical stability, mild adsorption conditions, cost-effective production methods, facile regeneration processes, minimal energy consumption, and environmentally friendly attributes. These combined qualities underline the potential usefulness of porous carbons in tackling CO 2 collection difficulties, putting them as a focus point in continuing research initiatives. − Recent investigations have indicated that the insertion of nitrogen (N), sulfur (S), or oxygen (O) into the carbon framework of porous carbons may have a detectable influence on the surface chemical composition and the electron cloud density encircling the carbon skeleton. This, in turn, improves the interaction between CO 2 and the carbon surface, hence boosting the overall effectiveness of CO 2 capture. − S- and N-doped porous carbon materials have recently been widely investigated for the CO 2 uptake. ,,− Although N-doped porous carbon materials have advantages, such as thermal stability, chemical binding, and enhancing uptake capacity in CO 2 capture, they also have disadvantages.…”