Why is H3PO4 used as anhydrous proton conductor?

Although recent research demonstrate that phosphate species could be adsorbed on the platinum catalyst surface , , leading to the loss of a cell voltage, H3 PO 4 is still widely employed as anhydrous proton conductor because of its merits on high proton conductivity, low cost, and thermal stability.

Can PAAM-g-starch form hydrogen bonds with H 3 Po 4 molecules?

Therefore, there is a probability that the functional groups such as –NH 2, O–H, C O, and C–N in PAAm-g-starch can form hydrogen bonds with H 3 PO 4 molecules and serve as pathways for proton transfer as illustrated in Fig. 1. The potential mechanism has been described in our previous report .

What happens if PAAM-g-starch membranes are swollen in H3 Po 4 aqueous solution?

The swollen of PAAm-g-starch membranes in H 3 PO 4 aqueous solution results in gradual decrease in osmotic pressure, and a swelling equilibrium will be obtained at equal value of expansibility and contractility of PAAm-g-starch (i.e., the osmotic pressure across the membrane is zero).

What is the AC-impedance spectroscopy of H3 Po 4 incorporated PAAM-g-starch membrane?

Electrochemical characterizations The proton conductivity of the H3 PO 4 incorporated PAAm-g-starch membranes in either hydrous or anhydrous state were characterized with ac-impedance spectroscopy using a CHI660E Electrochemical Workstation in a frequency range of 0.01 Hz–2 MHz and an ac amplitude of 10 mV in temperature range of 25–165 °C.