ArtikelAccurately predicting transport properties of porous fibrous materials by machine learning methodsvon Taylr Cawte et al. · 13.02.2023 Physical features from a set of generated porous fibrous materials were used to train seven machine learning algorithms to accurately predict the material diffusivity and permeability. The best performing models were found to be gradient boosting re...
ArtikelTrade‐off between energy density and fast‐charge capability of lithium‐ion batteries: A model‐based design study of cells with thick electrodesvon Michael Quarti et al. · 13.02.2023 Abstract Lithium-ion batteries exhibit a well-known trade-off between energy and power, which is problematic for electric vehicles which require both high energy during discharge (high driving range) and high power during charge (fast-charge ca...
ArtikelImpact of dopant ratio on the energy harvesting activity of polyaniline modified counter electrodes for Pt‐free dye‐sensitized solar cellsvon Shehna Farooq et al. · 13.02.2023 Polyaniline based platinum free dye sensitized solar cell Abstract Counter electrode (CE) is an essential part of dye-sensitized solar cells (DSSCs) in determining their efficiency. Ultimately, the high catalytic activity and conductivity of a CE...
ArtikelInfluence of carbon binder domain on the performance of lithium‐ion batteries: Impact of size and fractal dimensionvon Anshuman Chauhan et al. · 13.02.2023 The following study establishes a link between the various possibilities of CBD cluster size and fractal dimension that may eventualize during the mixing process of slurry preparation to the resulting microstructural properties and hence to the perf...
ArtikelExploration of operating conditions on oxygen mass transport resistance and performance of PEM fuel cells: Effects of inlet gas humidificationvon Tatyana V. et al. · 13.02.2023 Abstract This work presents comprehensive studies of inlet gas humidification on O2 mass transport and proton exchange membrane fuel cell performance to obtain a better understanding of transport processes at a cathode gas diffusion electrode. The O...
ArtikelThe gas diffusion electrode setup as a testing platform for evaluating fuel cell catalysts: A comparative RDE‐GDE studyvon Sven Nösberger et al. · 13.02.2023 Abstract Gas diffusion electrode (GDE) setups have been recently introduced as a new experimental approach to test the performance of fuel cell catalysts under high mass transport conditions, while maintaining the simplicity of rotating disk electro...
ArtikelMembrane‐electrode assembly design parameters for optimal CO2 reductionvon Oyinkansola Romiluyi et al. · 13.02.2023 Abstract Commercial-scale generation of carbon-containing chemicals and fuels by means of electrochemical CO2 reduction (CO2R) requires electrolyzers operating at high current densities and product selectivities. Membrane-electrode assemblies (MEAs)...
ArtikelSimulation‐based guidance for improving CO2${\rm CO}_{2}$ reduction on silver gas diffusion electrodesvon Matthias Heßelmann et al. · 13.02.2023 Abstract The reduction of CO2${\rm CO}_{2}$ in an electrochemical reactor using electrical energy is a promising approach to implement a more sustainable carbon economy and to replace fossil fuels with renewable carbon sources. Conventionally used s...
ArtikelRole of porosity and diffusion coefficient in porous electrode used in supercapacitors – Correlating theoretical and experimental studiesvon Puja De et al. · 13.02.2023 Abstract Porous electrodes are fast emerging as essential components for next-generation supercapacitors. Using porous structures of Co3O4, Mn3O4, α-Fe2O3, and carbon, their advantages over the solid counterpart is unequivocally established. The imp...
ArtikelInvestigating the electrowetting of silver‐based gas‐diffusion electrodes during oxygen reduction reaction with electrochemical and optical methodsvon Fabian Bienen et al. · 13.02.2023 Graphical Abstract: The wetting behavior of silver-based gas-diffusion electrodes is the result of a complex interplay of inherent material properties, the electrodes' porous architecture, and applied electrochemical potential. In this work, the ele...
ArtikelCover Picture13.02.2023 The cover image is part of the special collection titled Porous Electrodes for Energy Applications, guest edited by Thomas Turek, Clausthal University of Technology, Germany and Ulrike Krewer, Karlsruhe Institute of Technology, Germany. Read the Edi...
ArtikelUnravelling the structural‐property relations of porphyrinoids with respect to photo‐ and electro‐chemical activitiesvon Gita Singh et al. · 13.02.2023 Porphyrins are a set of tetrapyrrolic macrocycles, and interestingly with this underlying structural theme, porphyrins lead to an expanded diversity of biochemical functions. Because of the structure of porphyrins, the chemistry widens broadly beyon...
ArtikelToward data‐ and mechanistic‐driven volcano plots in electrocatalysisvon Kai S. · 08.02.2023 Abstract The present application note summarizes an advanced methodology that allows for deriving potential-dependent volcano curves for energy storage and conversion processes. The conventional approach relies on the combination of density funct...
ArtikelRole of solvation model on the stability of oxygenates on Pt(111): A comparison between microsolvation, extended bilayer, and extended metal/water interfacevon Giovanni Di et al. · 06.02.2023 Abstract The activity of catalysts is mainly dictated by the adsorption strength of reaction intermediates at their surfaces. For electrocatalysts in solution, the adsorption strength is not only determined by the intrinsic properties of catalysts a...
ArtikelWhat is limiting the potential window in aqueous sodium‐ion batteries? Online study of the hydrogen‐, oxygen‐ and CO2‐evolution reactions at NaTi2(PO4)3 and Na0.44MnO2 electrodesvon Daniel Winkler et al. · 21.12.2022 The electrochemical potential window for aqueous sodium-ion batteries employing NaTi2(PO4)3 and Na0.44MnO2 is found to be significantly smaller than suggested by commonly employed cyclic voltammetry measurements. Differential electrochemical mass sp...
ArtikelPerspective on the electrochemical recovery of phosphate from wastewater streamsvon Nicholas A. et al. · 10.12.2022 Abstract The presently increasing global population demands increased food production. Consequently, phosphate – an indispensable fertilizer component – will be needed in ever greater amounts. Current levels of mining of phosphate's most important c...
ArtikelRole of oxide support in electrocatalytic nitrate reduction on Cuvon O. Quinn et al. · 29.11.2022 The rate and selectivity of the electrocatalytic reduction of nitrate relies on activation and cleavage of NO bonds. Here we investigate the role of oxygen-deficient metal oxide supports on the rate and selectivity of nitrate reduction on copper at...
ArtikelCalculation of the Tafel slope and reaction order of the oxygen evolution reaction between pH 12 and pH 14 for the adsorbate mechanismvon Denis Antipin et al. · 25.11.2022 We calculate Tafel slope and reaction order and identify unique combintations for the rate-limiting step of the oxygen evolution reaction for electrocatalysts with strong binding, weak binding and optimal binding of intermediates. Abstract Despit...
ArtikelElectrochemical and spectral studies of rhodanine in view of heavy metals determinationvon Ovidiu Teodor et al. · 28.10.2022 Abstract The electrochemical study of 2-Sulfanylidene-1,3-thiazolidin-4-one (rhodanine, R) was performed on a glassy carbon working electrode by using three methods: differential pulse voltammetry (DPV), cyclic voltammetry (CV), and linear sweep ...
ArtikelSurface microstructures and oxygen evolution properties of cobalt oxide deposited on Ir(111) and Pt(111) single crystal substratesvon Naoto Todoroki et al. · 12.09.2022 We investigated the structural and activity changes of cobalt oxide (CoO x ) thin films on Ir and Pt substrates during the oxygen evolution reaction (OER). After repeated OER measurements, CoO x on Ir showed remarkable activity enhancement du...
ArtikelUnprecedented formation of reactive BrO– ions and their role as mediators for organic compounds degradation: The fate of bromide ions released during the anodic oxidation of Bromophenol blue dyevon Camila Carvalho et al. · 05.09.2022 Unexpected autoelectrocatalytic reaction: The degradation and mineralization of bromophenol blue (BPB) dye is initiated by heterogeneous free •OH mediation, with the release of Br‒ electro(chemical)-transformed to secondary oxidants (BrO‒), which ca...
ArtikelDesigning multinary noble metal‐free catalyst for hydrogen evolution reactionvon Wissam A. et al. · 26.08.2022First-principles methods accelerated with artificial intelligence can describe interactions of hydrogen on high entropy alloys (HEAs) with high fidelity. We show that noble-metal free HEA that is made of earth-abundant elements Co, Mo, Fe, Ni, and Cu...
ArtikelFrom ion‐sensitive field‐effect transistor to 2D materials field‐effect‐transistor biosensorsvon Silvia Rizzato et al. · 19.07.2022 Abstract Field-effect transistors have strong applications in biosensing field from pH and glucose monitoring to genomics, proteomics, cell signaling assays, and biomedical diagnostics in general. Notable advantages are the high sensitivity (thanks ...
ArtikelElectrochemical, EPR, and quantum chemical study of reductive cleavage of cone‐Calix[4]arene nosylates – New electrosynthetic approachvon Alan Liška et al. · 29.05.2022 Abstract The mechanism of electrochemical reduction of a series of six cone-calix[4]arene-bis-nosylates (4-nitrophenylsulfonate aryl esters) was investigated on mercury electrodes using DC-polarography and cyclic voltammetry (CV) combined with in si...
ArtikelVoltammetric study of new psychoactive substance 3‐fluorophenmetrazinevon Eliška Jiroušková et al. · 10.05.2022 Electrochemical oxidation of new psychoactive substance 3-fluorophenmetrazine was studied in phosphate buffers by cyclic voltammetry, in-situ infrared spectroelectrochemistry, and differential pulse voltammetry on glassy carbon electrode, and a meth...
ArtikelAmmonia electrocatalytic synthesis from nitratevon Dimitra Anastasiadou et al. · 10.05.2022 Abstract The interest in electrochemical processes to produce ammonia has increased in recent years. The motivation for this increase is the attempt to reduce the carbon emissions associated with its production, since ammonia is responsible for 1...
ArtikelNumerical analysis on influence of surface structures of cathode catalyst layers on performance of polymer electrolyte fuel cellsvon Kayoung Park et al. · 27.04.2022 Abstract Because it is time-consuming to optimize the design of a cathode catalyst layer (CCL), a numerical simulation to predict the reaction and mass transport characteristics without trial and error is desirable. This study used numerical analysi...
ArtikelElectrochemical redox properties of bridged and non‐bridged annulenedionesvon Aviv Gazit et al. · 14.04.2022 Abstract The present article is fully confined to cyclic voltammetric measurements of a series of bridged and non-bridged annulenediones (quinones of large conjugated rings of aromatic character). The evaluation of their electrochemical redox proper...
ArtikelSynthesis and electrochemical performance of in‐situ and ex‐situ carbon‐ coated Na2Ti3O7, as a promising anode for sodium‐ion batteriesvon Anwesa Mukherjee et al. · 11.04.2022 Abstract Insertion-type layered Na2Ti3O7 has attracted the attention of the researchers and is considered to be one of the promising low-voltage anode materiasl for sodium-ion batteries. In spite of its fascinating electrochemical properties, the lo...
ArtikelA CuOx/Cu/C electrocatalyst‐based gas diffusion electrode for the electroreduction of CO2 with high selectivity to C2H4von Vimanshu Chanda et al. · 03.04.2022 Abstract Electrochemical conversion of CO2 (CO2RR) has received significant attention since it could provide pathways for renewable energy storage to energy-dense chemicals and synthetic fuels. We developed a novel CuOx/Cu/C type electrocatalyst via...
ArtikelState‐of‐the‐art electrochemistry for the assessment of oxidative stress and integral antioxidant activity of biological environmentsvon Khiena Z. et al. · 31.03.2022 • Oxidative stress (OS) is caused by an imbalance between (pro)oxidants and antioxidants in living organisms • This phenomenon is related to the fundamental redox reactions that underlie health signaling and life processes • Modern electrochemical m...
ArtikelPhoto‐electrochromic salt composed by viologen cation and diarylethene anion derivativesvon Hugo Cruz et al. · 31.03.2022 Abstract A multi-responsive photo and electrochromic salt based on a viologen derivative ([(C10)2Bpy]2+) as organic cation combined with diarylethene anion ([DTE]2−) is synthesized and characterized for the first time. The coloration of this functio...
ArtikelAdsorption of ionomer and ionic liquid on model Pt catalysts for polymer electrolyte fuel cellsvon Kensaku Kodama et al. · 28.03.2022 The ionic liquid of [C4C1im][NTf2] is preferentially adsorbed on the step sites of Pt surface through the anionic moieties and mitigates the adsorption of ionomer on the Pt surface. Abstract The adsorption of the perfluoro-sulfonic acid polymer o...
ArtikelDesign of tubular high‐temperature proton exchange membrane fuel cells (HT‐PEM‐FCs): Development, challenges, and perspectivesvon María Catalina et al. · 23.03.2022 Abstract Fuel cells (FCs) have gained a prominent position in recent years within the scientific community and the energy market as an alternative to mitigate the inherent problems in the energy production based on fossil fuels such as the cons...
ArtikelPolarography with non‐mercury electrodes: A reviewvon Ivan Švancara et al. · 22.03.2022 Abstract This article reviews non-mercury configurations that have hitherto been reported in the literature as the working electrodes applicable in polarographic measurements. The individual types, namely gallium, liquid amalgams, dropping electroly...
ArtikelElectrochemical reduction of quinones in ethaline chosen as an example of deep eutectic solventvon Fangchen Zhen et al. · 17.03.2022 Abstract The electrochemical reduction of a series of substituted benzoquinone have been examined in ethaline chosen as an example of ionic deep eutectic solvent. Experiments show the importance of hydrogen-bonding interactions between the quinones ...
ArtikelElectrochemical hydrogen generation technology: Challenges in electrodes materials for a sustainable energyvon Carlos V. et al. · 16.03.2022 Abstract Foresee advanced and innovative strategies is a key approach and constitutes a cornerstone for accessing clean, affordable, and reliable energy to satisfy the world's increasing prosperity and economic growth. To this end, hydrogen e...
ArtikelISFET‐based sensors for (bio)chemical applications: A reviewvon Shengli Cao et al. · 15.03.2022 ISFET sensing system for biochemical detection of different analytes and applications of miniaturization and wearability Abstract Ion-sensitive field effect transistor (ISFET) sensor is a hot topic these years, playing the combined roles of signa...
ArtikelElectrochemical interfaces in ionic liquids/deep eutectic solvents incorporated with water: A reviewvon Shuai Liu et al. · 13.03.2022 Abstract Ionic Liquids (ILs) and deep eutectic solvents (DESs) are promising candidate electrolytes in electrochemical fields due to their excellent properties. They can absorb water from the environment quickly, the existence of water in ILs/DESs b...
ArtikelAqueous electrochemistry: The toolbox for life's emergence from redox disequilibriavon Wolfgang Nitschke et al. · 11.03.2022 Abstract The second law of thermodynamics leaves no doubt that life on planet Earth and its inherent substantial decrease in entropy is fundamentally based on mechanisms converting environmental free energy into the spatial and temporal order of met...
ArtikelAdvances in micro‐supercapacitors (MSCs) with high energy density and fast charge‐discharge capabilities for flexible bioelectronic devices—A reviewvon Maria Hepel · 08.03.2022 Novel nanoengineered flexible electrochemical supercapacitors can fulfill the new demanding requirements of energy storage devices by combining the ultra-high energy density storage with super-fast charging/discharging capabilities. Recent discoveri...
ArtikelThin film microfluidic reactors in electrochemical advanced oxidation processes for wastewater treatment: A review on influencing parameters, scaling issues, and engineering considerationsvon Faidzul Hakim et al. · 06.03.2022 Flow chart presenting the influencing parameters with the associated advantages (blue) and drawbacks (red) in microfluidic electrochemical reactor for the treatment of water and wastewater. Abstract The use of microfluidic electrochemical reactor...
ArtikelA new programmable dipping robotvon Lena Harms et al. · 02.03.2022 Tedious handling of substrates for dip-coating in layer-by-layer procedures is greatly simplified by a robot at the price of a simple three-dimensional printer as demonstrated by the preparation of a nickel hexacyanoferrate layer, whose morphologica...
ArtikelRole of imidazolium cations on the interfacial structure of room‐temperature ionic liquids in contact with Pt(111) electrodesvon Björn Ratschmeier et al. · 28.02.2022 Abstract Room-temperature ionic liquids (ILs) have gained considerable attention as an important addition to conventional electrolytes because they exhibit large electrochemical windows and can reduce existing overpotentials in electrocatalys...
ArtikelOxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanismsvon Viktor Gueskine et al. · 27.02.2022 Abstract Practical interest in oxygen reduction reaction (ORR) has traditionally been due to its application at fuel cells’ cathode following its complete 4e route to the water. In search of new electrode materials, it was discovered that conducting...
ArtikelMesoporosity and nitrogen doping: The leading effect in oxygen reduction reaction activity and selectivity at nitrogen‐doped carbons prepared by using polyethylene oxide‐block‐polystyrene as a sacrificial templatevon Marco Mazzucato et al. · 24.02.2022 Abstract Four mesoporous carbons (MCs) with tunable pore size were synthesized by soft template synthesis, employing a resorcinol-formaldehyde resin as a carbon precursor and a polyethylene oxide-block-polystyrene block copolymer as a sacrificial te...
ArtikelEvolution of the analytical signal in electrochemistry from electrocapillary curve to a digital electrochemical pattern of a multicomponent samplevon Sergey Volodarovich · 24.02.2022 Abstract The number of publications on the electrochemical analysis of liquids increases year by year. The growth of publication activity is largely due to the development of new biosensors and the introduction of nanomaterials into the practice of ...
ArtikelElectrochemical conversion of CO2 in non‐conventional electrolytes: Recent achievements and future challengesvon Elizabeth Sargeant et al. · 24.02.2022 Abstract Electrochemical reduction of CO2 in traditional aqueous electrolytes suffers from low faradaic efficiency towards desired products which can be traced back to low CO2 solubility and strong competition from the hydrogen evolution reaction. T...
ArtikelUbiquinone electrochemistry in analysis and sensingvon Peter Ó et al. · 22.02.2022 Abstract Ubiquinone (UQ) is a lipophilic compound present in most living organisms, where UQ's interesting but complex electrochemistry serves an important role in the transfer of electrons and protons within and across the mitochondrial membrane. W...
ArtikelEnzyme based field effect transistor: State‐of‐the‐art and future perspectivesvon Lucia Sarcina et al. · 19.02.2022 xx Abstract The review discloses the historical and technological evolution of enzyme-based field-effect transistors (EnFETs) underlying the importance of gate electrode modification toward the implementation of novel FETs configurations such as ...
ArtikelRecent advances in ion‐sensitive field‐effect transistors for biosensing applicationsvon Xiaohao Ma et al. · 18.02.2022 . Abstract Over the past decades, considerable development and improvement can be observed in the area of the ion-sensitive field-effect transistor (ISFET) for biosensing applications. The mature semiconductor industry provides a solid foundat...
ArtikelIonic transport modeling for liquid electrolytes ‐ Experimental evaluation by concentration gradients and limited currentsvon Maximilian Schalenbach et al. · 17.02.2022 The ion movement in diluted liquid electrolytes leads to concentration gradients, which affect the parameterization of the molar conductivity, mutual diffusion coefficients, and ion transport number. Abstract A direct current in an electrochemica...
ArtikelTuning the moisture stability of multiphase β‐Li3PS4 solid electrolyte materialsvon Xin Lu et al. · 15.02.2022 Abstract Efficiently improving the moisture stability of β-Li3PS4 materials could significantly reduce production costs and eventually enable the mass application. Nanoporous multiphase β-Li3PS4 materials prepared via solvent-assistant routes usuall...
ArtikelGlycerol electro‐reforming in alkaline electrolysis cells for the simultaneous production of value‐added chemicals and pure hydrogen – Mini‐reviewvon Nazym Tuleushova et al. · 06.02.2022 Abstract Glycerol is a cheap, non-toxic, and renewable by-product of the rapid expansion of biodiesel and soap producers around the world. Glycerol electroforming is a method of oxidizing glycerol into valuable chemicals of interest to the pharmaceu...
ArtikelCu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reactionvon Senthil Velan et al. · 04.02.2022 Abstract Electrochemical synthesis of hydrogen peroxide (H2O2) via a two-electron (2e–) oxygen reduction reaction (ORR) has emerged as a sustainable synthesis route compared to the anthraquinone oxidation synthesis process. Ba0.5Sr0.5Fe(1- ...
ArtikelEnzyme based amperometric wide field biosensors: Is single‐molecule detection possible?von Angelo Tricase et al. · 02.02.2022 Abstract This review discloses the technological advances involving enzyme-based amperometric biosensors engaging challenging limits of detection as low as a single molecule. At first, we summarise the most recent findings concerning electrode modif...
ArtikelImpact of catalyst support morphology on 3D electrode structure and polymer electrolyte membrane fuel cell performancevon Peter Benedikt et al. · 18.01.2022 Abstract Porous carbon-based electrodes are frequently applied in electrochemical energy technologies, for instance in fuel cells and redox flow batteries. In previous work, we observed that the final structure of a fuel cell electrode is dominated ...
ArtikelConversion of a CO–CO2 co‐feed with a porous tubular copper catalyst at low potentialvon Anne Clara et al. · 13.01.2022 Abstract In the electrochemical reduction of CO2, copper electrodes are well known to be active and selective for a variety of products, depending on process conditions. However, the effect of feed composition on performance has not been ex...
