摘要:
An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
摘要:
An electrolyte material for polymer electrolyte fuel cells, which is made of a polymer containing repeating units based on a fluoromonomer having a radical polymerization reactivity, wherein the repeating units contain a 5-membered ring (which may contain 1 or 2 oxygen atoms), of which at least one carbon atom is contained in the main chain of the polymer, and an ionic group such as a sulfonic acid group which is bonded to the 5-membered ring directly or via a perfluoroalkylene group having a linear or branched structure; and the polymer has a softening temperature of at least 120° C.
摘要:
A cathode having high durability and low hydrogen overvoltage comprising an electrode substrate and an alloy layer formed thereon, characterized in that said alloy layer is made of an alloy comprising Component X selected from the group consisting of nickel, cobalt and a mixture thereof, Component Y selected from the group consisting of aluminum, zinc, magnesium and silicon, and Component Z selected from the group consisting of a noble metal and rhenium, and having a composition of Components X, Y and Z falling within the range defined by the following points A, B, C and D with reference to the diagram of FIG. 1:A: X=99.6 wt. %, Y=0 wt. %, Z=0.4 wt. %B: X=79.6 wt. %, Y=20 wt. %, Z=0.4 wt. %C: X=10 wt. %, Y=20 wt. %, Z=70 wt. %D: X=12.5 wt. %, Y=0 wt. %, Z=87.5 wt. %.
摘要:
An electrode comprises a thin net type sheet having 50 to 3 mesh and a wire diameter of 0.15 to 2 mm and an elastic deformation factor of up to 1 mm under load of 1 Kg/cm.sup.2 which is covered with an electrode active material and a foraminous planner electrode support with which said thin net is closely brought into contact.
摘要翻译:电极包括薄膜网片,其具有50至3目,线直径为0.15至2mm,弹性变形系数为1Kg / cm 2,负载为1Kg / cm 2,被电极活性材料和有孔材料覆盖 所述细网与所述电极支撑件紧密接触。
摘要:
An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
摘要:
To provide an electrolyte membrane for a polymer electrolyte fuel cell, capable of generating power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of generating stable power over a long period of time. A membrane used as an electrolyte membrane for a polymer electrolyte fuel cell, which comprises a cation exchange membrane made of a fluorinated polymer having cation exchange groups and having an ion exchange capacity of from 1.0 to 2.5 meq/g dry polymer, wherein some of the cation exchange groups are ion-exchanged with at least one type of ions selected from the group consisting of cerium ions and manganese ions.
摘要:
A polymer electrolyte membrane which comprises a polymer electrolyte having sulfonic acid groups, and contains any one of the following (a) to (c):(a) cerium ions and an organic compound (X) capable of forming an inclusion compound with cerium ions;(b) an inclusion compound (Y) comprising the organic compound (X) including cerium ions; and(c) at least one of cerium ions and the organic compound (X), and the inclusion compound (Y).
摘要:
An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains manganese ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with manganese ions so that manganese ions are contained preferably in an amount of from 0.5 to 30% of —S03− groups contained in the cation exchange membrane. A membrane for a polymer electrolyte fuel cell capable of power generation in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of stable power generation over a long period of time, can be provided,
摘要:
An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains cerium ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with cerium ions so that cerium ions are contained preferably in an amount of from 0.3 to 20% of —SO3− groups contained in the cation exchange membrane. A membrane for a polymer electrolyte fuel cell capable of power generation in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of stable power generation over a long period of time, can be provided.
摘要:
A membrane-electrode assembly for a polymer electrolyte fuel cell, which comprises an anode and a cathode each having a catalyst layer containing a catalyst powder and an ion exchange resin, and an electrolyte membrane made of an ion exchange membrane disposed between the anode and the cathode, characterized in that the catalyst layer of the anode contains a catalyst powder having a platinum-cobalt alloy supported on a carbon carrier.