The focus of this research is on the steady-state boundary layer that forms around a rotating iron hemispherical electrode in an electrochemical cell. Electrode’s material dissolution into the electrolyte solution, accompanied by the current passage through the circuit, generates a concentration boundary layer that is significantly thinner than the hydrodynamic boundary layer, primarily due to high

The Pitting Resistance Equivalent Number (PREN) is widely applied to assess pitting corrosion resistance of stainless steel, despite containing only a few compositional elements. A reformulation of the PREN was established by statistical analysis of a public pitting potential data set. Statistical pitfalls were identified and properly addressed by multiple imputation and principles from survival analysis

Li-O2 batteries(LOBs)have garnered substantial interest owing to their exceptional energy density. Nevertheless, the slow kinetics of discharge and recharge significantly hinder their commercial application. Herein, a one-step hydrothermal process was employed to anchor metal-organic framework (MOF)-derived CoFe-layered double hydroxides (CoFe-LDH) hollow nanocages onto carbon nanotubes, thereby improving

The present study reports the successful preparation of pure magnetite Fe3O4 (F), bismuth doped Fe3O4 (FB), reduced graphene oxide doped Fe3O4 (FR), and bismuth-rGO co doped Fe3O4 (FBR) using the simple co-precipitation process. The produced samples were subjected to morphological, optical, FTIR, and structural analyses. XPS- Photo electron spectroscopy indicates the presence of relevant elements and

Conducting polymers are among the most interesting materials due to their numerous applications ranging from sensing to energy storage devices. Among the different phenomena associated with the electric, electrochemical and optical properties of these macromolecules, charge trapping via σ-couplings remains highly controversial. This work studied the electrochemical generation of σ-couplings between

3,4-ethylenedioxythiophene (EDOT) based donor-acceptor-donor (DAD) type conjugated polymers generally have extraordinary electrochromic properties due to the excellent nature of the EDOT unit. This work investigates the electrochromic properties of such a system; EDOT-Carbazole-EDOT (ECE) based DAD type of conjugated polymer. Electrochemically synthesized homopolymer film (PECE) showed multichromic

A desirable material with high surface area and optimized electronic properties is urgently required to boost the supercapacitors performance. Herein, we develop a hierarchical heterogeneous electrode material of NiCo2O4@CoWO4/NF with nano-needles combined core-shell structure. This hierarchical heterogeneous electrode material features optimized interface charge distribution, which improves the electron

Mixed halide perovskite materials exhibited excellent optoelectronic, ionic, and electronic properties, extending the possibility of introducing them as an efficient electrode material for energy storage and conversion applications. In this work, we performed the synthesis of CsPbIBr2 in ambient conditions and investigated its characteristics for solar cells and energy storage devices. The X-ray diffraction

Under a particular geometrical arrangements of impedances of the type resistors and capacitors for the modeling of a transmission line, the voltage and current along the line are known to follow the standard partial differential equation of diffusion. In this work we propose a generalization of this circuit network by considering the non-ideal fractional capacitive element, also known as constant phase

Herein, an electrochemical channel flow cell setup that allows for conducting electrochemical investigations up to 80°C and pressurized gases up to 3 bar is presented in details, including technical drawings and list of parts, in an attempt to facilitate the adoption of such setup by the community for electrochemical/electrocatalytic kinetic studies. The oxygen reduction reaction (ORR) on a commercial

In the past decades, the proton exchange membrane fuel cell (PEMFC) components, cell/stack designs and system architecture have been significantly improved. However, despite great initial performance, PEMFC systems still suffer technological limitations, such as their initial cost, partly due to the use of expensive Pt-based electrocatalyst, which prevents widespread industrial deployment. Lowering

Electroporation often leads to electrochemical reactions at the electrode-electrolytic solution interface, particularly when using monophasic pulses of considerable duration (typically on the order of several microseconds or longer) that cause not only capacitive charging of the double-layer, but also faradaic charge transfer between the electrodes and the solution. Applications, where the electrochemical

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This paper critically evaluates three methods for determining metrics of the oxygen evolution reaction (OER) describing the performance and stability of low-loading iridium-based anode catalyst layers (CLs) in proton exchange membrane water electrolysis (PEMWE) cells. The methods applied are OER mass activity, voltage breakdown analysis (VBA), and constant Tafel slope VBA (CT-VBA). They are used to

Carbon-based materials are commonly used as anodes for potassium-ion batteries due to their high conductivity and stable cycling performance. However, their practical application is greatly hindered by their low capacity. Herein, we introduce facile sulfur chemistry including thioether bonds and CoS₂ into a nitrogen-oxygen co-doped partially graphitized carbon skeleton (NOGC), while the extra reconfiguration

Atomically dispersed M-N-C catalysts are a promising, cost-effective class of materials for reducing CO2 to value-added products through the CO2 reduction reaction (CO2RR). However, complex multi-objective optimization of several properties including catalyst stability, activity, and selectivity for target products are necessary to make CO2RR more efficient with this class of catalysts. We systematically

Graphene as conductive additives for enhancing the electrochemical performance of commercial cathode materials (e.g., LiFePO4, LiCoO2, and LiMn2O4) in advanced Li-ion batteries (LIBs) has attracted great attention in recent years. However, the LiFePO4 and LiCoO2 electrodes usually show a poor rate capability when using graphene as the conductive additive, since its planar structure hinders ion transmission

In this study, various mixed-linker metal-organic frameworks (MOFs) based on Zn-MOF were successfully synthesized using different ratios of 1,3,5-benzenetricarboxylic acid (BTC) and 1,4-benzenedicarboxylic acid (BDC) as modulator ligands. The characterization results indicated that a lower percentage of BDC ligand effectively enhances the specific surface area of the MOFs while maintaining their microporous

Polyelectrolytes (PEs) serve as the critical medium for electrochemical reactions in membrane-based electrochemical devices, such as fuel cells and membrane electrolyzers. To optimize membrane-based electrochemical device performance and elucidate reaction mechanisms, there is a pressing need for detailed microscopic molecular information at gas diffusion electrode/PE interfaces. In this work, we designed

Ion diffusion and electron transfer are hindered by commonly used hydrophobic binders, which directly affect the electrochemical performance of the electrodes. Hydrophilic binders are selected to efficaciously solve the problem of relatively low actual specific capacitance and rate performance in the field of nickel cobalt sulfide electrode materials. In the paper, RuCoNiS electrodes were prepared

The study investigated the evolution of LNMO (LiNi0.5Mn1.5O4) morphology and surface orientation as a function of increasing temperature. The results show that at an initial calcination temperature of 750 °C, LNMO exhibits spherical polyhedral with (111), (110), and (100) facets and relatively small particle sizes. In response to increasing temperatures, the particle size increases, the number of crystal

Cl-rich Li-argyrodites are one type of sulfide solid electrolytes (SSEs) with a high ionic conductivity and suitable mechanical properties for practical application. However, their tolerance against moisture in air and compatibility with metallic Li need further improvements. Here, we demonstrate that Nb-O dual-doping can be a good strategy for advanced Cl-rich Li-argyrodite SSEs, prepared by high

Herbicide-metolachlor (MA) residue seriously pollutes the environment and endangers human health. A novel electrochemical immunosensor featuring the surface-adhered nanofiber-particle films has been developed for the specific detection of metolachlor. The three-dimensional nanofiber-particle films, fabricated through the combination of nanomaterial modification techniques, including alkali treatment

Organic electrode materials (OEMs) are increasingly replacing conventional inorganic counterparts in metal ion batteries (MIBs) due to their cost-effectiveness and environmental compatibility. Porphyrin-based materials, particularly metalloporphyrins (M-Porph), have garnered significant attention for electrochemical energy storage systems (EESS) owing to their bipolar electrochemical reactivity, making

Referred to as potential options for anodes in sodium-ion batteries, transition metal chalcogenides (TMCs) exhibit unique electronic and structural characteristics. However, the limited electrical conductivity inherent in them poses a hindrance to electron transport, while their tendency to undergo volumetric expansion during cycling exacerbates structural instability, thereby imposing constraints

Organic silicone coatings added with varying Zn content were developed to enhance heat and corrosion resistance in different corrosive environments. Zn was revealed to affect the adhesion strength between the coating and the substrate, and the 40% Zn-added coating demonstrated the best heat and corrosion resistance. In high-temperature environments, the volume expansion and melting deformation of Zn

This study explores the enhancement of dye-sensitized solar cells (DSSCs) through the modification of porous TiO2 photoanodes by incorporating two-dimensional graphitic carbon nitride (g-C3N4) synthesized from urea. The combination of wide-bandgap TiO2 with narrow-bandgap g-C₃N₄ extends the optical response range of the TiO2 heterostructure composites from ultraviolet to visible light. The introduction

The battery's high energy density, economical price, and ecological sustainability of the Zn-air battery make it a bright future battery technology. However, parasitic reactions, which can diminish the battery's life cycle and efficacy, are the key challenges for potential development of Zn-air batteries. Glycyrrhiza glabra roots extract (GGRE) has been investigated as an alternative hydrogen gas evolution