A PVC membrane Cr(III) ion selective electrode has been constructed using 2H-1,4-benzothioazine-2,3(4H)dione dioxime (BTD) as membrane carrier. The influence of membrane composition on the electroderesponse was studied. The electrode exhibits a Nernstian response over a Cr(III) concentration range of 1.0 x10 6 to 1.0>< 10-1 M (r = 0.99) with a slope of 19.5 ± 0.5 mV per decade of concentration,...

We have developed a new portable taste sensor with a lipid/polymer membrane and conducted experiments to evaluate the sensor's performance. The fabricated sensor consists of a taste sensor chip (40 mm × 26 mm × 2.2 mm) with working and reference electrodes and a portable sensor device (80 mm × 25 mm × 20 mm). The working electrode consists of a taste-sensing site comprising a poly(hydroxyethyl)...

Microstructure and electrochemical properties of the cathode catalyst layers (CCL) a polymer electrolyte membrane fuel cells (PEMFC) have great impact on performance durability cell. The aim this work is to establish link between CCL structure cell performance. To obtain CCLs with unique structures six types electrodes were prepared, each different coating technique but same Pt loading. techniq...

Electrocatalysts are nanomaterials of paramount importance within water electrolyzers, because they facilitate the electron transfer between reactants and electrode, enabling chemical transformation into hydrogen oxygen. In this Perspective, recent findings in electrocatalyst development for next generation polymer electrolyte membrane (PEM) electrolyzers at scale discussed. We discuss opportun...

In this study, a series of sulfonated hydrocarbon pentablock terpolymers (NEXAR® Polymers) with different ion exchange capacities (1.0, 1.5, and 2.0 meq g−1) were characterized investigated as membranes ionomers in hydrogen fuel cells. All NEXAR® Membranes exhibited higher proton conductivity (>0.2 S cm−1 at 80 °C, 90% RH) than Nafion (the most frequently used polymer membrane cells). The Membr...

Degradation of polymer electrolyte membrane fuel cells (PEMFC) is investigated through an accelerated stress test (AST) consisting load-induced humidity cycling combined with open circuit voltage. This stressor-AST was designed to mimic real operating conditions. Commercially available membrane-electrode assemblies initial voltage about 0.7 V at 0.5 A cm?2 showed a performance drop 900 ?V h?1. ...

S,S'-bis(2-aminophenyl)ethanebis(thioate), (APhET), is reported as N2S2 ligand which form chelate with copper of high stability as compared to the other metals. Two modification of APhET, simpler 1,2-di-(o-aminophenylthio)ethane (DAPhTE), and the complex one 1,2-di-(o-salicylaldiminophenylthio)ethane (SAPhTE), were examined as the active material for copper(II) ion selective PVC membrane electr...

in this work, electrocatalyst with core-shell structure (pd as core and pt as shell on vulcanxc-72r) was synthesis. not only this structure can reduce the amount of platinum but it also can increase the gas diffusion electrode (gde) performance in cathode reaction (oxygen reduction reaction or orr) of polymer electrolyte membrane fuel cell (pemfc). to this meaning, one series of electrocatalyst...

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...