Protonic conducting organic/inorganic nanocomposites for polymer electrolyte membrane

I. Honma, S. Nomura, H. Nakajima

Research output: Contribution to journalArticlepeer-review

217 Citations (Scopus)


Protonic conducting membrane can be used in many energy technological applications such as fuel cells, water electrolysis, hydrogen separation, sensors and other electrochemical devices. However, polymer electrolyte membrane usually lack thermal stability, resulting in narrow operational temperature windows. So, a new class of polymer membrane with high temperature stability and protonic conductivity is desired for many industrial applications. In this paper, new synthetic routes have been investigated for organic/inorganic nanocomposites hybrid polymer membranes of SiO2/polymer (polyethylene oxides (PEO); polypropylene oxide (PPO); polytetramethylene oxide (PTMO)). Novel protonic conducting properties have also been investigated. The materials have been synthesized through sol-gel processes in flexible, ductile free-standing thin membrane form. The hybrid membrane has been found to be thermally stable up to 250°C and possess protonic conductivities of approximately 10-4S/cm at temperature windows from room temperature to 160°C and relative humidity.

Original languageEnglish
Pages (from-to)83-94
Number of pages12
JournalJournal of Membrane Science
Issue number1
Publication statusPublished - 2001 Apr 15


  • 12-Phosphotungstic acid (PWA)
  • Organic/inorganic nanocomposites
  • Protonic conducting membrane
  • Silica/PEO hybrid
  • Silica/PTMO hybrid
  • Sol-gel process
  • Solid polymer electrolytes


Dive into the research topics of 'Protonic conducting organic/inorganic nanocomposites for polymer electrolyte membrane'. Together they form a unique fingerprint.

Cite this