Systems and methods are provided for receiving a first media content item associated with a first interactive object of an interactive message, receiving a second media content item associated with a second interactive object of the interactive message, generating a third media content item based on the first media content item and second media content item, wherein the third media content item comprises combined features of the first media content item and the second media content item, and causing display of the generated third media content item.

Systems and methods are provided for receiving a first media content item associated with a first interactive object of an interactive message, receiving a second media content item associated with a second interactive object of the interactive message, generating a third media content item based on the first media content item and second media content item, wherein the third media content item comprises combined features of the first media content item and the second media content item, and causing display of the generated third media content item.

An aspect of the present disclosure provides time and energy-efficient synthesis of catalysts for water electrolysis. An exemplary synthesis method includes dissolving amounts of Fe(NO.sub.3).sub.3.9H.sub.2O and Na.sub.2S.sub.2O.sub.3.5H.sub.2O in deionized water at ambient temperature to form a solution, placing Ni foam into the solution where the Ni foam serves as a substrate and a Ni source for growth of sulfur-doped (Ni,Fe)OOH (S—(Ni,Fe)OOH) catalysts, leaving the Ni foam in the solution at ambient temperature for a duration between one minute and five minutes to provide a treated foam where the S—(Ni,Fe)OOH catalysts grow on the substrate during the duration, and removing the treated foam from the solution after the duration.

An aspect of the present disclosure provides time and energy-efficient synthesis of catalysts for water electrolysis. An exemplary synthesis method includes dissolving amounts of Fe(NO.sub.3).sub.3.9H.sub.2O and Na.sub.2S.sub.2O.sub.3.5H.sub.2O in deionized water at ambient temperature to form a solution, placing Ni foam into the solution where the Ni foam serves as a substrate and a Ni source for growth of sulfur-doped (Ni,Fe)OOH (S—(Ni,Fe)OOH) catalysts, leaving the Ni foam in the solution at ambient temperature for a duration between one minute and five minutes to provide a treated foam where the S—(Ni,Fe)OOH catalysts grow on the substrate during the duration, and removing the treated foam from the solution after the duration.

A coated electrode assembly (CEA) comprising: i) a gas diffusion layer (GDE); and ii) a coating. The GDE comprises a gas diffusion layer (GDL) and a catalyst layer. The catalyst layer is disposed between the coating and the GDL. The catalyst layer comprises a hydrophobic polymer and/or an ionomeric polymer and the coating comprises a hydrophobic polymer and/or an ionomeric polymer. A method for making a CEA is provided. The CEA may have improved performance and stability compared to a membrane electrode assembly (MEA).

A method for performing an electrolysis using an electrolysis stack having multiple electrolysis cells, wherein each of the electrolysis cells has: an anode space with an anode, a cathode space with a cathode, a membrane that separates the anode space and the cathode space from each other, and a recombination catalyst. The method includes feeding an electrolysis medium to the electrolysis stack and determining a flow rate at which the electrolysis medium is fed to the electrolysis stack, providing electrical energy to the electrolysis stack for performing the electrolysis with the electrolysis medium fed to the electrolysis stack, and determining a degree of degradation of the membranes based on the determined flow rate of the electrolysis medium.

A method for performing an electrolysis using an electrolysis stack having multiple electrolysis cells, wherein each of the electrolysis cells has: an anode space with an anode, a cathode space with a cathode, a membrane that separates the anode space and the cathode space from each other, and a recombination catalyst. The method includes feeding an electrolysis medium to the electrolysis stack and determining a flow rate at which the electrolysis medium is fed to the electrolysis stack, providing electrical energy to the electrolysis stack for performing the electrolysis with the electrolysis medium fed to the electrolysis stack, and determining a degree of degradation of the membranes based on the determined flow rate of the electrolysis medium.

An electrode catalyst for a water electrolysis cell includes a catalyst, and a polymer of intrinsic microporosity having a Tröger's base skeleton containing a quaternary ammonium group. A water electrolysis cell includes an anode, a cathode, and an electrolyte membrane. The electrolyte membrane is disposed between the anode and the cathode. At least one selected from the group consisting of the anode and the cathode includes the electrode catalyst.

An electrode catalyst for a water electrolysis cell includes a catalyst, and a polymer of intrinsic microporosity having a Tröger's base skeleton containing a quaternary ammonium group. A water electrolysis cell includes an anode, a cathode, and an electrolyte membrane. The electrolyte membrane is disposed between the anode and the cathode. At least one selected from the group consisting of the anode and the cathode includes the electrode catalyst.

Disclosed herein are methods and systems that relate to oxidizing a metal ion of a metal oxyanion or a non-metal ion of a non-metal oxyanion from a lower oxidation state to a higher oxidation state at an anode and generate hydrogen gas at the cathode. The metal oxyanion with the metal ion in the higher oxidation state or the non-metal oxyanion with the non-metal ion in the higher oxidation state may be then subjected to a thermal reaction or a second electrochemical reaction, to form oxygen gas as well as to regenerate the metal oxyanion with the metal ion in the lower oxidation state or the non-metal oxyanion with the non-metal ion in the lower oxidation state, respectively.