摘要:
A polyelectrolyte membrane includes at least one syndiotactic styrenic polymer or copolymer in its clathrate form. The syndiotactic styrenic polymer or copolymer in its clathrate form is syndiotactic polystyrene. The polyelectrolyte membrane has a good electrical conductivity as well as good mechanical properties. This type of membrane is used for fuel cells and similar electrochemical applications.
摘要:
A proton exchange membrane for electrolyte cells includes a polyelectrolyte polymer membrane comprising a sulfonated copolymer based on the following formula (I): wherein n is an integer between 1 and 1,000,000, and m is an integer between 1 and 1,000,000. A membrane-electrode assembly includes such a membrane.
摘要:
An electrocatalytic polymer-based powder has particles of at least one electronically conductive polymer species in which particles are dispersed of at least one catalytic redox species, in which the particles of the polymer species and of the catalytic species are of nanometric dimension.
摘要:
A composite product is for an electrode of a fuel cell including a catalyst, an electrically conductive phase which supports such catalyst, a protonically conductive phase, and a porous phase. At least the contact between the catalyst and the electrically and protonically conductive phases, and preferably also the contact of the porous phase with the catalyst and with the electrically and protonically conductive phases, is improved or maximized. Each of the phases is individually continuous, and such phases are continuous with each other.
摘要:
A composite product is for an electrode of a fuel cell including a catalyst, an electrically conductive phase which supports such catalyst, a protonically conductive phase, and a porous phase. At least the contact between the catalyst and the electrically and protonically conductive phases, and preferably also the contact of the porous phase with the catalyst and with the electrically and protonically conductive phases, is improved or maximized. Each of the phases is individually continuous, and such phases are continuous with each other.
摘要:
An electrocatalytic polymer-based powder has particles of at least one electronically conductive polymer species in which particles are dispersed of at least one catalytic redox species, in which the particles of the polymer species and of the catalytic species are of nanometric dimension.
摘要:
A polyelectrolyte membrane may include at least one styrene polymer or copolymer having a syndiotactic configuration and having sulfonic groups. The at least one styrene polymer or copolymer may be made in the form of a film in clathrate form. The film may include less than about 0.1% sulfonate groups of —SO3−Y+ general formula, in which Y may be a monovalent metal cation.