Preparation and conductivity of tungstovanadogermanic heteropoly acid polyethylene glycol (PEG) hybrid material

Synthesis and conductivity of heptadecatungstovanadodiphosphoric heteropoly acid with Dawson structure

“…X-ray powder diffraction is widely used to study the structural features of HPAs and explain their properties [15]. The data of Xray powder diffraction are listed in Table 1.…”

Crystal Structures and Conductivities of Two Organic–Inorganic Hybrid Complexes Based on Poly‐Keggin‐Anion Chains

“…For the electrical conductivity study, the powdered crystalline samples were compressed to 0.7-1.0 mm in thickness and 12.0 mm in diameter under a pressure of 12-14 MPa. Alternating current (ac) impedance spectroscopy was performed with a chi660b (Shanghai chenhua) electrochemical impedance analyser with copper electrodes [15] (the purity of Cu was higher than 99.8 %) over the frequency range of 10 5 to 10 Hz. Samples were placed in a temperature/humidity controlled chamber (GT-TH-64Z, Dongwan Gaotian Corp.) The conductivity was calculated from σ = (1/R) ϫ (h/S) in which R is the resistance, h is the thickness and S is the area of the tablet.…”

Mapping the Design of Electrolyte Materials for Electrically Rechargeable Zinc–Air Batteries

“…The accumulation of the vehicle molecules on one side of the medium generates a concentration gradient in the electrolyte, which drives vehicular diffusion in the opposite direction, leading to the transfer of OH − through the electrolyte. [ 38 ] In the convective mechanism, a pressure gradient and an electrostatic potential gradient (e.g., the net motion of charged species) cause water molecules with OH − to be dragged through the electrolyte. [ 37 ] Therefore, aqueous electrolytes with large amounts of hydrogen bonds and regular arrangements of molecules facilitate the transport of active OH − ions and thus promote the reaction kinetics in ERZABs.…”