| 초록 |
Poly(dimethyl siloxane) (PDMS) has been widely used in various applications due to thermal, chemical stabilities and low price and reactive end groups, played a role as a linker to connect between sol-gel derived conducting compounds. It would drive phase separation and result in forming the proton conducting channels. Sol-gel reaction of 3-aminopropyl-triethoxysilane (3-APTES) and tetraethoxysilane (TEOS) was expected to form the nanopores by phase separation. This nanopores were successfully bonded with hydroxyl-terminated PDMS. Phosphorous oxychloride (POCl3) bestowed ion conductivity on this nano-porous ionomer. In the temperature ranges from -30 ℃ ~ 140 ℃, a nanoporous membrane showed high proton conductivity which was comparable with maximum conductivity of a Nafion®. It could be used for medium and high temperature proton conducting membranes at low humid conditions due to conducting mechanism of phosphorous groups at these conditions. |
