This work demonstrates a new approach for building bioinorganic interfaces by integrating biologically derived silica with single-walled carbon nanotubes to create conductive matrix immobilization of enzymes. Such strategy not only allows simple integration into biodevices but presents an opportunity intimately interface enzyme and manifest direct electron transfer features. Biologically synthesized silica/carbon nanotube/enzyme composites are evaluated electrochemically characterized means...

Abstract The oxygen evolution reaction (OER) is an enabling process for technologies in the area of energy conversion and storage, but its slow kinetics limits efficiency. We performed electrochemical evaluation 14 different perovskites variable composition stoichiometry as OER electrocatalysts alkaline media. particularly focused on improved methods a reliable comparison catalyst activity. From initial results we selected most active samples further optimization electrode preparation...

The incorporation of Fe-Nx/C moieties into perovskites remarkably activates them for the oxygen reduction reaction (ORR) and also leads to notable improvement their activity towards evolution (OER) thus presenting a new route realizing high performance, low cost bifunctional catalysts reversible electrodes.

Electrically conductive and heteroatom doped, high-quality graphene oxide is prepared by electrochemical exfoliation without the use of any harsh chemicals.

This research introduces a cavity anode design based on new single-walled nanotube (SWNTs) papers, "bucky" used for the oxidation (and regeneration) of nicotinamide adenine dinucleotide (NADH) and l-malate. The materials designed are paper-like processed composites containing also additives: BP11 sample contains SWNTs isopropanol (IPA); BPMG SWNTs, IPA, methylene green (MG). NADH/NAD(+) is cofactor responsible l-malate by malate dehydrogenase (MDH), in Krebs' cycle. Because high...

Abstract NADH electrocatalysts have been an area of study for over 3 decades. Polyazines popular choice oxidation both sensors and biofuel cell applications. However, little is known about the structure function relationship between these polyazines their ability oxidation. In this paper, we utilize XPS, SEM, NMR to evaluate relate that electrochemical properties.

Abstract This paper investigates the utility of ‘cross–lab’ comparative analysis electrocatalytic electrode performance using standardized modular stack cells and test protocols. Using poly(methylene green)‐modified glassy carbon electrodes as model system, we characterized fabrication with respect to catalytic oxidation NADH at neutral pH low overpotential. Three sets experiments were duplicated across four independent laboratories experimental results from each set analyzed compared in...

A new concept for the localized characterization of gas evolving electrodes based on scanning electrochemical microscopy (SECM) is suggested. It offers information about spatial distribution predominant locations, which represent most active catalytic sites, and dynamic characteristics gas-bubble departure. The knowledge departure critical assessment development electrode materials energy applications.

Determination of the so-called onset potentials, i.e. lowest (for anodic reactions) or highest cathodic potentials at which a reaction product is formed given electrode and defined conditions, very important for evaluation catalytic activity even more comparison different catalysts. We present an approach determination based on scanning electrochemical microscopy (SECM) using "substrate generation–tip collection" mode. In proposed method, potential applied to catalyst sample changed...

Abstract Different modification procedures to stabilize and control the orientation of Myrothecium verrucaria bilirubin oxidase ( Mv BOD) on 3D carbon nanotube/carbon microfiber‐modified graphite electrode surfaces were evaluated for development biofuel‐cell cathodes. The surface properties different linkers covalent binding BOD investigated by using atomic force microscopy‐based techniques. For all immobilization strategies, maximal current response was obtained at a pH value 6.5 with...

Abstract Cavity microelectrodes were used as a binder‐free platform to evaluate oxygen evolution reaction (OER) electrocatalysts with respect gas bubble formation and departure. Electrochemical noise measurements performed by using RuO 2 benchmark catalyst the perovskite La 0.58 Sr 0.4 Fe 0.8 Co 0.2 O 3 non‐noble metal OER lower intrinsic conductivity. Changes in current during originate from variations electrolyte resistance of phase partial coverage active area. Fluctuations observed...

Abstract Glucose oxidase catalyzes the formation of metallic gold particles in immediate proximity protein from (III) chloride absence any other catalytic or reductive substrates. The protein‐mediated reduction reaction leads to size‐controllable particle and concomitant association enzyme an electrically conductive template. Such immobilization strategy provides a simple rapid method create intimate interface between glucose matrix, which can be joined electrode surface. Model electrodes...

The deployment of sustainable energy technologies such as photovoltaics and wind turbines, which have greatly grown in the past decades, is hindered by their intermittent nature. This has been one greatest motivators for scientists across globe investigating developing reliable storage systems that could offset this intermittency storing generated making it available upon demand. emergence electric vehicle (EV), including hybrids, plug-in all-electric cars, also resulted a remarkable...

Here, we investigate the effect of time constant on ED Au particles RVC substrates. Potentiostatic was performed two samples with electrochemical accessible surface areas 1.0 and . Progressive nucleation observed both At same applied potentials, large ohmic drop high area sample cannot be neglected results in a significantly reduced density larger mean diameter. Knowledge how cell (resistance–capacitance constant) affects particle coverage size allows one to optimize conditions substrates...

Abstract not Available.

Graphical Abstract Feeling positive: In this Editorial, new Editor-in-Chief Rosalba A. Rincón looks back at the highlights of past year Batteries & Supercaps.

In this Editorial, we look back at how celebrated the 10th anniversary of ChemElectroChem in 2024. 2024, its anniversary. As part our celebrations, launched special collection, which has already seen outstanding contributions from board members, top reviewers, and authors most cited read papers. You can check collection here stay tuned for more papers to come! We were also present many community events throughout year (Figure 1). these events, by supporting early career researchers awarded...

Perfect Ten: Happy birthday, ChemElectroChem! In this Editorial, we look back at the accomplishments of journal, reflect on recent changes, and forward to celebrating our 10-year anniversary with you! Ten years ago, ChemElectroChem published its first issue what a great ride it has been! Under leadership Greta Heydenrych then Kate Lawrence, journal really taken off become trusted forum for electrochemistry community worldwide. As November 1, 2023, I have role Editor-in-Chief am ready embark...