Qingyin Wu

Synthesis and high proton conductive performance of indium-substituted Keggin-type quaternary heteropoly acid The synthesis and characterization of indium-substituted Keggin structure quaternary heteropoly acid, H4[In(H2O)PW9Mo2O39]·11H2O (PMo9W2In), is reported. At 18 °C with 80% relative humidity, PMo9W2In displays the protonic conductivity as 2.32 ×10-4 S·cm-1, with 35.52 kJ·mol-1 as the activation energy, indicating it as a potential solid protonic conductor following Vehicle mechanism.

‘Proton Escalator’ PEI and Phosphotungstic Acid Constructing a Nanofiber Membrane with Remarkable Proton Conductivity Xiuwei Sun, Shumei Liu, Qingyin Wu, Shan Zhang, Hong-Rui Tian, Xue Bai, Zhuo Li, Ying Lu and Shuxia Liu Abstract Polyethyleneimine (PEI) is expected to become a new type of proton conduction booster due to its high density amine and extremely high flexibility.

A new vanadium- and molybdenum-substituted quaternary silicon-containing heteropoly acid H6SiW9MoV2O40•15H2O has been synthesized in this paper by the stepwise acidification and the stepwise addition of element solutions. The structure feature and hydration of this product were characterized by IR, UV, XRD and TG-DTA, and its proton conductivity was measured by electrochemical impedance spectroscopy (EIS).