| 摘要 |
<p>Composite, nanoporous, proton membrane, comprising a polymer matrix compatible with proton ambient with ceramic particles of micrometric and submicrometric dimension, and having a proton-conducting gelified solution immobilized therein is disclosed. In said membrane, said polymer is preferably a PVdF-CTFE copolymer and said ceramic consists of SiO<SUB>2</SUB> particles. The membrane according to the invention provides high proton conductivity, low methanol dispersion, satisfactory stability and good behaviour of direct methanol fuel cells, using said system as separator at ambient temperature and especially at intermediate temperatures. A further advantage of this system is low cost, which is convenient in the fabrication of direct methanol fuel cells.</p> |
