ANOMALOUS ACID PROTON SELF-DIFFUSION IN N(CH3)4HSO4 - A CANDIDATE FOR PROTON SUPERIONIC CONDUCTIVITY

The appearance of a 'liquid-like' proton T//2 component above 100 degree C and the relatively high value of the proton self-diffusion coefficient D equals (5-8) multiplied by 10** minus **7 cm**2 sec** minus **1 between 175 degree C and 200 degree C demonstrate the onset of a super-ionic state in N(CH//3)//4HSO//4. The ratio between the 'liquid' and 'solid' like components shows that acid protons are responsible for the high ionic conductivity.