摘要:
This disclosure relates to electrochemical systems, e.g., a combination of an electrical energy source and an electrical energy storage system having a regenerative fuel cell system, that exhibit operational stability in harsh environments, e.g., both charging and discharging reactions in a regenerative fuel cell in the presence of an acid or a mixture of acids, or a halogen ion or a mixture of halogen ions. The electrochemical systems are capable of conducting both hydrogen evolution reactions (HERs) and hydrogen oxidation reactions (HORs) in the same system. The electrochemical systems have low cost, fast response time, and acceptable life and performance. This disclosure also relates to methods of operating the electrochemical systems containing a regenerative fuel cell system.
摘要:
This disclosure relates to electrochemical systems, e.g., a combination of an electrical energy source and an electrical energy storage system having a regenerative fuel cell system, that exhibit operational stability in harsh environments, e.g., both charging and discharging reactions in a regenerative fuel cell in the presence of an acid or a mixture of acids, or a halogen ion or a mixture of halogen ions. The electrochemical systems are capable of conducting both hydrogen evolution reactions (HERs) and hydrogen oxidation reactions (HORs) in the same system. The electrochemical systems have low cost, fast response time, and acceptable life and performance. This disclosure also relates to methods of operating the electrochemical systems containing a regenerative fuel cell system.
摘要:
This disclosure relates to electrochemical systems, e.g., a combination of an electrical energy source and an electrical energy storage system having a regenerative fuel cell system, that exhibit operational stability in harsh environments, e.g., both charging and discharging reactions in a regenerative fuel cell in the presence of an acid or a mixture of acids, or a halogen ion or a mixture of halogen ions. The electrochemical systems are capable of conducting both hydrogen evolution reactions (HERs) and hydrogen oxidation reactions (HORs) in the same system. The electrochemical systems have low cost, fast response time, and acceptable life and performance. This disclosure also relates to methods of operating the electrochemical systems containing a regenerative fuel cell system.
摘要:
To provide a membrane/electrode assembly for polymer electrolyte fuel cells, which is capable of providing high power generation performance even under a low humidity condition and has sufficient mechanical strength and dimensional stability, and which has an excellent durability even in an environment where moistening and drying are repeated, and a polymer electrolyte fuel cell which is capable of providing high power generation performance even under a low humidity condition. A membrane/electrode assembly 10 is used, which comprises a cathode 20 having a catalyst layer 22, an anode 30 having a catalyst layer 32, and a polymer electrolyte membrane 40 interposed between the catalyst layer 22 of the cathode 20 and the catalyst layer 32 of the anode 30, wherein at least one of the cathode 20 and the anode 30 further has a reinforcing layer 26 comprising a porous sheet-form reinforcing material made of a polymer, and an electrically conductive fiber.
摘要:
In a first aspect, a method for forming a ionic polymer membrane, comprises: (i) polymerising a mixture of one or more first monomers to form an ionic polymer membrane; (ii) soaking the polymer membrane of (i) into a mixture of one or more second monomers, for a sufficient length of time to allow the solution to penetrate through the entire polymer membrane; and (iii) polymerising the monomer-coated polymer of step (ii) to form an essentially homogenous ionic polymer. In a second aspect, a method for forming a catalyst-coated ionic polymer membrane, comprises: (i) polymerising a mixture of one or more first monomers to form an ionic polymer membrane; (ii) dipping the polymer of (i) into a mixture of one or more second monomers; (iia) depositing a catalyst onto the monomer-coated polymer; (iii) polymerising the monomer-coated polymer of step (iia). The present invention also includes membranes formed using these methods.
摘要:
The invention relates to a catalyst for fuel cells comprising a carrier, at least one catalytically active metal from the platinum group or an alloy comprising at least one metal from the platinum group, and at least one oxide of at least one metal selected from Ti, Sn, Si, W, Mo, Zn, Ta, Nb, V, Cr and Zr. The invention further relates to a method for producing such a catalyst and the use thereof.
摘要:
Provided is a gas diffusion layer for a fuel cell, wherein a reactive gas passage groove for distributing a reactive gas is formed in one principal surface of the gas diffusion layer, and a reinforcing member is provided along the reactive gas passage grooves. Thus, the deformation of the gas diffusion layer due to a fastening pressure can be suppressed to improve the power generation performance.
摘要:
The invention relates to a fuel cell comprising a stack (6) of electrochemical cells and end plates (8) applying a clamping force on the electrochemical cells, a heat-management system made up of a circuit (10) for circulating a heat-transfer fluid inside the stack (6), and a circuit (12) for circulating heat-transfer fluid on the outside of the stack, the inner circuit (10) and the outer circuit (12) connecting at one of the end plates (10), the outer circuit (12) comprising a first sub-circuit (12.1) provided with a heat exchanger (14) and a second sub-circuit (12.2) connected directly to the inlet of the inner circuit (10), a thermostatic valve built into said end plate (8) to control the circulation of the heat-transfer fluid in one and/or both of the sub-circuits (12.1, 12.2) according to the temperature of said fluid at the outlet of the inner circuit (10).