Abstract:
Polar cyclicsiloxane materials with various functionalities are disclosed. When combined with lithium salts, such materials can be useful as electrolyte materials in lithium battery cells. They may be used alone as electrolytes or as additives in other polymer electrolytes. Various lithium battery cell configurations that can employ such polar cyclicsiloxane materials are also described.
Abstract:
Membrane assemblies for electrochemical devices are provided, along with methods and system for fabricating them. Membrane assemblies comprise anode layer(s) and cathode layer(s), separated by membranous separation layer(s) and all embedded in continuous polymerized ionomer material. In production, during continuous deposition of ionomer material on a substrate (e.g., by electrospinning or electrospraying), consecutive deposition stages of catalyst material and optionally binder material are performed. For example, anode particles, binder material and cathode particles may be deposited (e.g., by electrospraying or electrospinning, respectively) consecutively during the continuous deposition o the ionomer material. Self-refueling power-generating system are provided, which include reversible anion exchange membrane devices with disclosed membrane assemblies.
Abstract:
A membrane for fuel cells, such as PEM and/or AEM fuel cells and/or electrolyzers is disclosed. Such a membrane (e.g., an anion conducting membrane) may include: crosslinked ionomer comprising two types of functional groups: a first type of functional groups forming crosslinking bonds between two ionomer chains; and a second type of functional groups comprising ion conducting functional groups. In some embodiments, the crosslinking bonds may not include the ion conducting functional groups. A catalyst coated membrane (CCM) is also disclosed. In such case the membrane may further include at least one catalyst layer attached to at least one side of the membrane to form the catalyst coated membrane (CCM). The at least one catalyst layer may include catalyst nanoparticles and crosslinked ionomer of the catalyst layer comprising two types of functional groups.
Abstract:
La présente invention concerne un gel électrolyte comprenant : un liquide ionique de formule Z 1 X 1 , Z 1 étant un cation choisi dans le groupe comprenant les imidazoliums; les pyridiniums; les ammoniums cycliques; les ammoniums acycliques; et les phosphoniums, et XI étant un anion choisi dans le groupe comprenant le bis(trifluorosulfonyl)imidure (TFSI); bis(fluorosulfonyl)imidure (FSI); hexafluorophosphate (PF 6 ); tétrafluoroborate (BF 4 ); iodure (I-); dicyanamide (DCA); et tétraborocyanide (B(CN)4); CL - un réseau polymère RP d'au moins un polymère réticulé P CL ; le polymère réticulé P CL présentant au moins : ■ une unité de répétition A, et ■ une unité réticulante U CL ; l'unité de répétition A comprenant une chaine pendante C p contenant au moins un groupement cationique Z2 dont le contre ion X2 est choisi dans le groupe comprenant le bis(trifluorosulfonyl)imidure (TFSI); bis(fluorosulfonyl)imidure (FSI); hexafluorophosphate (PF6); tétrafluoroborate (BF 4 ); iodure (I-); dicyanamide (DCA); et tétraborocyanide (B(CN) 4 ); le polymère réticulé P CL comprenant 0.25 à 40% d'unité réticulante U CL , par rapport au nombre total d'unités A et UCL; le rapport massique P CL / Z 1 X 1 étant compris entre 0.1 et 4.
Abstract:
Improved membrane electrode assemblies, cation-associating components thereof, and methods of making and treating the same are provided. Membrane electrode assemblies may include an ionomer having a first pKa value, and a water-insoluble net polymer having a weakly-acidic functional group, wherein the weakly-acidic functional group has a second pKa value greater than the first pKa value.