Abstract:
A thermostat includes a power stealing circuit selectively configured to provide power to the thermostat and to circuit(s) ancillary to the thermostat from power source(s) external to the thermostat, without requiring a common or neutral connection between the thermostat and the power source(s). Exemplary embodiments also are disclosed of a climate control system that includes such a thermostat. This thermostat can power-steal off of existing load wires (e.g., a W and/or Y terminal, etc.) and can provide power for a continuous backlight and/or other device (e.g., a remote sensor and/or low-power transceiver, etc.).
Abstract:
A thermostat includes a power stealing circuit selectively configured to provide power to the thermostat and to circuit(s) ancillary to the thermostat from power source(s) external to the thermostat, without requiring a common or neutral connection between the thermostat and the power source(s). Exemplary embodiments also are disclosed of a climate control system that includes such a thermostat. This thermostat can power-steal off of existing load wires (e.g., a W and/or Y terminal, etc.) and can provide power for a continuous backlight and/or other device (e.g., a remote sensor and/or low-power transceiver, etc.).
Abstract:
Polymer electrolyte membranes (PEMs), methods and use thereof in fuel cells and methods of preparing thereof are disclosed. A PEM may include at least one porous support film and a polysiloxane polymer bonded to the at least one porous support film, wherein the polysiloxane polymer includes at least one polysiloxane grafted to a heterocycle.
Abstract:
Embodiments of the present inventions are directed to fuel cell electrodes in membrane electrode assemblies, and methods of making same wherein the fuel cell electrodes comprise a catalyst layer and a gas diffusion layer. The catalyst layer comprises at least one catalyst, phosphoric acid and a binder comprising at least one triazole modified polymer.
Abstract:
Polymer electrolyte membranes (PEMs), methods and use thereof in fuel cells and methods of preparing thereof are disclosed. A PEM may include at least one porous support film and a polysiloxane polymer bonded to the at least one porous support film, wherein the polysiloxane polymer includes at least one polysiloxane grafted to a heterocycle.
Abstract:
Embodiments of the present anhydrous fuel cell electrodes comprise an anhydrous catalyst layer and a gas diffusion layer, wherein the anhydrous catalyst layer comprises at least one catalyst, about 5 mg/cm2 to about 100 mg/cm2 of phosphoric acid added as a catalyzing reagent during formation of the catalyst layer, and a binder comprising at least one triazole modified polymer, wherein the triazole modified polymer comprises a polysiloxane backbone and a triazole substituent.
Abstract translation:本发明的无水燃料电池电极的实施方案包括无水催化剂层和气体扩散层,其中无水催化剂层包含至少一种催化剂,约5mg / cm 2至约100mg / cm 2作为催化剂加入的磷酸 催化剂层的形成和包含至少一种三唑改性聚合物的粘合剂,其中三唑改性聚合物包含聚硅氧烷骨架和三唑取代基。
Abstract:
Embodiments of the present inventions are directed to fuel cell electrodes in membrane electrode assemblies, and methods of making same wherein the fuel cell electrodes comprise a catalyst layer and a gas diffusion layer. The catalyst layer comprises at least one catalyst, phosphoric acid and a binder comprising at least one triazole modified polymer.
Abstract:
Embodiments of the present anhydrous fuel cell electrodes comprise an anhydrous catalyst layer and a gas diffusion layer, wherein the anhydrous catalyst layer comprises at least one catalyst, about 5 mg/cm2 to about 100 mg/cm2 of phosphoric acid added as a catalyzing reagent during formation of the catalyst layer, and a binder comprising at least one triazole modified polymer, wherein the triazole modified polymer comprises a polysiloxane backbone and a triazole substituent.
Abstract translation:本发明的无水燃料电池电极的实施方案包括无水催化剂层和气体扩散层,其中无水催化剂层包含至少一种催化剂,约5mg / cm 2至约100mg / cm 2作为催化剂加入的磷酸 催化剂层的形成和包含至少一种三唑改性聚合物的粘合剂,其中三唑改性聚合物包含聚硅氧烷骨架和三唑取代基。
Abstract:
Water soluble catalysts, (M)meso-tetra(N-Methyl-4-Pyridyl)Porphinepentachloride (M=Fe, Co, Mn & Cu), have been incorporated into the polymer binder of oxygen reduction cathodes in membrane electrode assemblies used in PEM fuel cells and found to support encouragingly high current densities. The voltages achieved are low compared to commercial platinum catalysts but entirely consistent with the behavior observed in electroanalytical measurements of the homogeneous catalysts. A model of the dynamics of the electrode action has been developed and validated and this allows the MEA electrodes to be optimized for any chemistry that has been demonstrated in solution. It has been shown that improvements to the performance will come from modifications to the structure of the catalyst combined with optimization of the electrode structure and a well-founded pathway to practical non-platinum group metal catalysts exists.