| 摘要 |
<p>There is described a fuel cell or electrolytic cell comprising an ion-conductive polymeric material which includes a first repeat unit of formula (I): - (O-Ph?1-CO-Ph1-O-Ph1-CO-Ph1¿) -, and a second repeat unit of formula (II): - (O-Ph?2-O-Ph3-CO-Ph4¿) -, or of formula (III): (O-Ph?2-O-Ph3-SO¿2-Ph4) -; wherein Ph?1, Ph2, Ph3 and Ph4¿ independently represent phenyl moieties and wherein said second repeat unit is provided with ion-exchange sites. The polymeric material may include a third repeat unit which is amorphous.</p> |
