On February 4, 2005, Yamada, Masanori; Honma, Itaru published an article.Formula: C5H5NO3S The title of the article was Proton conductivity of zwitterionic-type molecular solids under intermediate temperature and anhydrous conditions. And the article contained the following:
Anhydrous proton conducting material for polymer electrolyte membrane fuel cell (PEFC) was prepared by the mixing of zwitterionic-type mol. solid 3-pyridinesulfonic acid (PS) and organic acid methylenediphosphonic acid (MP). As a result, PS mol., which has a sulfonic acid and a pyridine group in its structure, showed the proton conductivity of 4 × 10-5 S cm-1 at 160°C under anhydrous condition. Surprisingly, by the mixing of MP to PS material, the PS-MP composite material exhibited a conductivity of 2 × 10-3 S cm-1. Also, the conductivity of PS-MP composite material did not decrease under the heating at 160° for 50 h. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Formula: C5H5NO3S
The Article related to proton conductivity sulfonic phosphonic zwitterionic solid electrolyte fuel cell, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Formula: C5H5NO3S