摘要:
In a battery composed of methanol/air fuel cells which in turn are composed of a cathode, an anode and a CO.sub.2 -permeable anion exchanger membrane as electrolyte, a plurality of cathodes and anodes are in a parallel arrangement in a common cathode compartment and anode compartment respectively.
摘要:
The present disclosure relates to a technology of synthesizing an aromatic polyfluorene-based copolymer which has a cross-linked structure, does not have an aryl ether bond in a polymer backbone and has a piperidinium group introduced in a repeating unit, and applying an anion exchange membrane prepared therefrom to an alkaline fuel cell, water electrolysis, carbon dioxide reduction, a metal-air battery, etc. According to the present disclosure, an anion exchange membrane having a cross-linked structure has superior thermal and chemical stability and mechanical properties as well as high water-holding capacity, ionic conductivity and durability, and exhibits a superior dispersed phase.
摘要:
A continuous automated process and production line for preparing an acid doped polybenzimidazole, PBI, polymer membrane film for use in a fuel cell, the process comprising a washing stage, a drying procedure, and a doping stage.
摘要:
The present invention relates to a composite material comprising a porous solid matrix having interconnected channels, said matrix comprising sulfonate groups on at least a part of the surface of said channels, wherein a sulfonate group is in ionic interaction with a quaternary ammonium of a polymerizable molecule. The present invention also relates to a method for preparing such a composite material and applications thereof.
摘要:
The electrochemical energy conversion system include an anode, a cathode, and a proton exchange membrane disposed between the anode and the cathode. The proton exchange membrane includes a polymer having a hard block polymer, a soft block polymer, and one or more hydrophilic functional groups attached to the soft block polymer. The glass transition temperature of the hard block polymer is higher than a glass transition temperature of the soft block polymer, such that the hard block polymer is non-elastic and the soft block polymer is elastic at a desired operating temperature. The hydrophilic functional groups are attached to the soft block polymer via a thiol-ene reaction to modify double bonds in the soft block polymer. The swellable functional groups are selectively connected to the soft domains of the block copolymers, so that when the membrane swells (under hydration or gas adsorption), the stress is effectively absorbed by the soft domain and the impact on overall mechanical properties is minor, resulting in more durable membranes.
摘要:
A preparation process of composite membrane for fuel cells uses an expanded polytetrafluoroethylene microporous base membrane as a skeleton. The base membrane is subjected to an impregnation treatment of mixed solutions having different concentrations from low to high. Specifically, the treatment tank I is provide with a mixed solution of a 0.1 wt. %-1 wt. % perfluorosulfonic acid resin solution, a water-retaining agent and a free radical quencher, the treatment tank II is provided with a mixed solution of a 2 wt. %-6 wt. % perfluorosulfonic acid resin solution, a water-retaining agent and a free radical quencher, and the treatment tank III is provided with a mixed solution of a 7 wt. %-20 wt. % perfluorosulfonic acid resin solution and a sulfonated polyetheretherketone solution. The resulting proton exchange composite membrane does not generate pore residues and avoids hydrogen permeation when in use.
摘要:
A reinforced ion-conducting membrane comprises a planar reinforcing component which comprises a porous polymer material; an ion-conducting component embedded in at least a region of the planar reinforcing component, which ion-conducting component comprises an ion-conducting polymer material; and linking groups which are chemically bonded to both the planar reinforcing component and the ion-conducting component. The reinforced ion-conducting membrane is useful as the membrane in a membrane-electrode assembly for example as used in fuel cells.
摘要:
The present disclosure relates to a composition that includes a first layer that includes a polymer having a repeat unit with a structure that includes
where m is between 2 and 100, inclusively, the repeat unit is protonated at at least one of position A) and/or B) and/or sulfonated at at least one of rings 1) and/or 2), R1 includes at least one of a lone pair of electrons, a covalent bond, hydrogen, and/or a hydrocarbon functional group, R2 includes at least one of a lone pair of electrons, a covalent bond, hydrogen, and/or a hydrocarbon functional group, and is a covalent bond.
摘要:
A continuous automated process and production line for preparing an acid doped polybenzimidazole, PBI, polymer membrane film for use in a fuel cell, the process having a washing stage, a drying procedure, and a doping stage.