Parametric investigation ensures the optimal design and commercialization of high-quality products. This study employs numerical approach to evaluate the performance of a zinc-air fuel cell, focusing on the influence of design and operational parameters. A transient two-dimensional (2D) mathematical model, incorporating the effect of flowing potassium hydroxide (KOH) electrolyte is developed and verified

A one-step hydrothermal method is employed to synthesize a composite of nickel-cobalt sulfide (NiCo2S4) integrated with reduced graphene oxide (rGO) as an electrode for energy storage applications in the supercapcitor. The distribution of NiCo2S4 nanoparticles on the rGO surface is optimized to be enhance the supercapacitor performance. The resulting NiCo2S4/rGO composite showed impressive electrochemical

Anion exchange membrane fuel cells (AEMFCs) have emerged as a promising alternative to commercialized proton exchange membrane fuel cells because they can enable much lower costs by using cheaper materials, especially non-precious metal electrocatalysts. However, the commercialization of AEMFCs faces several technical challenges, including water management during operation. More specifically, achieving

In the field of supercapacitors, carbide MXenes have recently received significant attention as pseudocapacitive electrode materials due to their unique multilayered structure, high metallic conductivity, pseudocapacitive charge storage mechanism and tunable surface terminations. Herein, synthesis and electrochemical performance of 2D molybdenum carbide (Mo2C) MXene-based electrode is presented for

It has come to our attention that one of the curves was missing in Fig. 7d in the final published version of our paper. The correct Figure is below. Download: Download high-res image (726KB) Download: Download full-size image Figure 7. Comparison of the calculated and experimentally determined pH distributions for 8 rectangular pulses with a duration of 10 ms and a pulse repetition rate of 1 s-1. The

In this study, we demonstrate that localized electrochemical impedance spectroscopy (LEIS) can successfully probe the solid-liquid interface of a model gold surface in low-concentrated aqueous electrolytes. The approach utilizes scanning electrochemical microscopy (SECM) under potential control of the sample, marking a notable improvement over previous SECM-based LEIS studies, which were conducted

Ti/IrO2-Ta2O5 electrode is widely used in the electrochemical industry with oxygen evolution, however, the knowledge is still limited about the passive film structure and its variation in the processes of deactivation. In this work, the evolution of passive film under the catalytic coating during accelerated life test has been studied using FIB-TEM and other methods. The results show that the as-prepared

A well-known problem of lead acid batteries (LABs) is the limited charge efficiency and cyclability, due to the heavy electrode degradation during the discharging-charging process. Specifically, grid corrosion remains a detrimental issue to solve in flooded LAB. In this regard, it was observed that the addition of carbons in the positive active mass (PAM) of LABs improves the battery performances specifically

The synergistic effects of Al on Cr(III) passivation in a family of (FeCoNi)100-x-y-Crx-Aly (at.%) complex concentrated alloys (CCAs), where x = (0, 4, 10, 13, 16) and y = (0, 3, 6, 9, 13) were investigated. Homogenized solid solution alloys containing 10 at.% Cr intentionally selected below the stainless steel threshold of 12 at.% achieved excellent passivation by forming a Cr(III) rich film containing

Structural defects and heteroatoms play a key role in electrochemical reactions. However, there is still no common understanding of what has a greater impact on electrochemical processes: defects or the type of heteroatoms. To clarify these factors, defective carbon nanowalls treated by reactive etching in different atmospheres, such as argon and mixtures of argon with nitrogen, chlorine, hydrogen

Fosamprenavir (FPV) is combined with other drugs to manage human immunodeficiency virus infection patients. This prodrug was created to address the solubility issue of the parent protease inhibitor medication, amprenavir. Based on photopolymerization (PP) with p-aminophenol (PAP) functional monomer and electropolymerization (EP) with p-aminobenzoic acid (PABA) functional monomer, this work reported

Biomass-derived carbon materials present significant economic advantages alongside environmental sustainability, owing to their renewable nature and distinctive structure. They have been extensively studied for applications in energy storage. However, the low specific capacity over prolonged cycling periods impedes their progress. Activation of salt templates and heteroatom doping have been proven

The low energy density and capacity fading of δ-MnO2 electrode limit the practical applications for supercapacitors. Herein, Li doped δ-MnO2 electrode (δ-Li0.17Mn0.83O2) is successfully synthesized to improve the electrochemical performance. It is found that Li doping (δ-Li0.17Mn0.83O2) dramatically enhances the specific capacitance(40 % enhancement at 0.2 A g-1) and cycling stability(15 % enhancement

In the context of the global water shortage, the need for sustainable, energy-efficient desalination is paramount. Capacitive deionization (CDI), an emerging technology for water desalination, offers promise for addressing this issue. In this study, we introduce a new approach to reusing spent activated carbon (AC-spent) from water treatment plants through regeneration via acidic, neutral, and alkaline

The development of stable and buffered reference electrodes (REs) is crucial for molten salt electrochemistry, particularly in pyrochemical processing, such as electrorefining. These REs must maintain a stable potential to ensure precise control over electrorefining processes by preventing unwanted shifts in the potential that could lead to impurity deposition. This study evaluated metal chlorides

This study presents an innovative approach to the sputtering of 316 stainless steel on nickel foam (SS/NF) for use as an electrode in supercapacitors. A range of spectral and analytic techniques verified the structure of the electrode as SS/NF. Scanning electron microscope images revealed the presence of three-dimensional nanopyramid-shaped SS structures on the NF. Water contact angle measurements

The regulation of bubble dynamics on the photoelectrode surface through the application of external physical fields significantly influences the efficiency of photoelectrocatalytic reactions. This study investigates the evolution and detachment characteristics of bubbles on the photoelectrode surface under varying flow velocities and laser powers, focusing on the impact of shear flow on mass transfer

Catalysts based on Pt nanoparticles supported on carbon (Pt/C) are widely used in proton-exchange membrane fuel cell (PEMFC) cathodes. The Pt weight percent (wt%) and the type of carbon used influence the PEMFC performance and durability, but the mechanism of this influence remains poorly understood. Herein, we systematically investigated the effect of catalyst metal content and the type of carbon