Electrode material based on sol-gel synthesized Ca-Mn-O nanostructures for electrochemical hydrogen storage application

Abstract

The growing demand for efficient and sustainable energy solutions has intensified the exploration of advanced materials for hydrogen storage1 . In this study, we investigate the potential of calcium-manganese oxide (Ca-Mn-O) nanostructured materials as a high-capacity hydrogen storage. Ca-Mn-O nanostructures are synthesized using a sol-gel method, yielding highly porous, high-surface-area materials, ideal for gas adsorption applications. Also, aminoacids is chosen as the best fuel and capping agent, resulting in the production of manganate materials. In order to compare the generated samples' surface area, magnetic properties, purity, and structural, chemical, and physical characteristics with one another. Including Structural and morphological analysis reveals the formation of well-defined nanoscale architectures, which enhance hydrogen adsorption through both physisorption and mechanisms. Through the use of the CV and CHP techniques in a three-electrode cell with a 2.0 M KOH electrolyte, the potential of Ca-Mn-O materials for electrochemical energy storage was examined. By applying advanced characterization techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD), this project will offer in-depth insights into the composition-structure-morphologyperformance relationships of hydrogen storage2 . The results demonstrate that Ca-Mn-O nanostructures exhibit improved hydrogen uptake compared to bulk materials, attributed to their surface chemistry and pore distribution. These findings suggest that Ca-Mn-O nanostructures hold promise as efficient, cost-effective hydrogen storage materials, contributing to the advancement of hydrogen-based energy systems.