An enzymatic biofuel cell is integrated on a screen-printed electrode as basis for self-powered biosensor. A glucose/O2 consisting of pyrroloquinoline quinone-dependent glucose dehydrogenase embedded within an Os-complex modified redox polymer bioanode to oxidize and non-limiting bilirubin oxidase-based gas diffusion biocathode in the direct-electron transfer regime reduction O2 showed glucose-...

Designing optimal microstructures for solid oxide fuel cell (SOFC) electrodes is complicated due to the multitude of electro-chemo-physical phenomena taking place simultaneously that directly affect working conditions of a SOFC electrode and its performance. In this study, a new design paradigm is presented to obtain a balance between electrochemical sites in the form of triple phase boundary (...

The influence of lateral adsorbate diffusion on the dynamics of the first-order phase transition in a two-dimensional Ising lattice gas with attractive nearest-neighbor interactions is investigated by means of kinetic Monte Carlo simulations. For example, electrochemical underpotential deposition proceeds by this mechanism. One major difference from adsorption in vacuum surface science is that ...

Portable electronic devices are negatively impacted by energy and power density limitations of current lithium-ion batteries (LIBs). Architectures or materials for faster ion and electron transport are required. Since the diffusion time of ions is somewhat proportional to the square of the diffusion distance, the use of a nanoporous 3D nanocarbon-based electrode that is characterized by short d...

Injection-detection experiments have been performed to study quasiparticle diffusion and quasiparticle losses in Nb strips using a series array of Nb/AI junctions. The I-Vcurve of the detector junction was measured as a function of the spacing between the (high-quality) detector junction and the simultaneously biased injector junction. For our sample geometry, the quasiparticle gas is described...

Ni- and Co-oxide materials have promising electrocatalytic properties towards the oxygen evolution reaction (OER) reduction (ORR), attract with low cost, availability, environmental friendliness. The stability of these in alkaline media has made them most studied candidates for practical applications such as a gas diffusion electrode (GDE) rechargeable metal-air batteries. In this work, we prop...

The possibility of substituting Pt/C with the hydrogen storage alloy MlNi3.6Co0.85Al0.3Mn0.3 as the anode active material of a proton exchange membrane fuel cell system has been analyzed. The electrochemical properties indicate that a much more electrochemically active anode is obtained by impregnating the active material loaded anode in a Nafion proton conducting polymer. Such performance impr...

The pre-pilot scale synthesis of 1-phenylethanol was carried out by the cathodic hydrogenation of acetophenone in a 100 cm 2 (geometric area) Polymer Electrolyte Membrane Electrochemical Reactor. The cathode was a Pd/C electrode. Hydrogen oxidation on a gas diffusion electrode was chosen as anodic reaction in order to take advantage of the hydrogen evolved during the reduction. This hydrogen ox...

This study presents a flow injection system for the sequential determination of free (CN(-)) and total (CN(-)+ HCN) cyanide using a potentiometric method which employs two different processes for the determination of these two chemical species. The first process is based on direct detection of CN(-) using an ion-selective electrode for cyanide. In the second process, the sample is mixed with ac...

The deconvolution of physicochemical processes in impedance spectra SOCs with nickel/ceria fuel electrodes is challenging as gas diffusion strongly overlaps the electrochemical at and air electrode. To overcome this issue, symmetrical cells were applied process electrode was quantified by altering inert component (nitrogen/helium) a ternary mixture. An effective transport parameter considering ...