A solid-state integrated photo-supercapacitor based on ZnO nanorod arrays decorated with Ag2S quantum dots as the photoanode and a PEDOT charge storage counter-electrode.

A planar solid-state photocapacitor with two electrodes has been prepared for the first time using a passivated film of ZnS with Ag2S quantum dots deposited on ZnO nanorods, which were electrochemically grown on ZnO seed layers, as the photoanode. The supercapacitor part is composed of a electrodeposited poly(3,4-ethylene-dioxythiophene) PEDOT film as the counter-electrode and an ionic liquid-based electrolyte between them deposited by the dip coating method. The different nanostructures and electrodes were morphologically and structurally characterized, and the device was electrochemically characterized and could reach a potential of 0.33 V during photocharge and a storage efficiency of 6.83%.

A new concept of a transparent photocapacitor.

A solid-state transparent photocapacitor has been prepared for the first time by the use of two transparent electrodes (TiO2 and LiFeO2) and also a transparent ion gel-based electrolyte between them, reaching a transmittance of 57% at λ = 555 nm, a specific capacitance of 2.98 µF cm-2 and a specific energy of 0.54 µJ cm-2.

Polagraphic determination of some metal diethyldithiocarbamates.

The polarographic behaviour of Cu, Pb, Zn, Mn, Cd, Ni and Bi diethyldithiocarbamates in benzene-methanol media was examined. A separation method was developed which allowed polarographic determination of all of these complexes without mutual interferences. Good precision and accuracy were obtained in the analysis of artificial mixtures and standard samples.