Abstract: The disclosed invention relates to a composition comprising a crosslinked blend of polyphosphazene polymers. The composition comprises a first polyphosphazene and a second polyphosphazene, where the first polyphosphazene and the second polyphosphazene being bound by a thiol bearing crosslinking agent. Such compositions are useful as a membrane material for the separation of gasses in a gaseous mixture.

Abstract: The disclosed invention relates to a composition comprising a crosslinked blend of polyphosphazene polymers. The composition comprises a first polyphosphazene and a second polyphosphazene, where the first polyphosphazene and the second polyphosphazene being bound by a thiol bearing crosslinking agent. Such compositions are useful as a membrane material for the separation of gasses in a gaseous mixture.

Abstract: A method of recovering active materials from a rechargeable battery comprises placing an active material of a rechargeable battery in a cathode chamber comprising a cathode of an electrochemical cell comprising the cathode chamber, an anode chamber comprising an anode, and a membrane separating the cathode chamber from the anode chamber, contacting the active material in the cathode chamber with an electrolyte comprising an acid, ferric ions, and ferrous ions, and dissolving at least one of lithium and cobalt from the active material into the electrolyte. Related apparatuses for recovering metals from active materials of rechargeable batteries are also disclosed.

Abstract: A method of recovering a rare earth element. The method comprises dissolving a rare earth element magnetic material in a dissolution organic solvent and a ?-diketone compound to form a dissolved rare earth element mixture. A rare earth element of the rare earth element magnetic material and the ?-diketone compound are reacted to form a ?-diketonate chelate complex and the dissolution organic solvent is removed. The ?-diketonate chelate complex is removed using a separation organic solvent, and the ?-diketonate chelate complex is recovered. Additional methods are also disclosed.

Abstract: A phosphoranimine compound comprising a cationic portion bonded to a nitrogen atom of the phosphoranimine compound, a phosphorus atom bonded to the nitrogen atom, pendant groups bonded to the phosphorus atom, and a counterion. An electrolyte solution comprising at least one phosphoranimine compound is also disclosed, as is an energy storage device including the electrolyte solution.

Abstract: A method of recovering a rare earth element. The method comprises dissolving a rare earth element magnetic material in a dissolution organic solvent and a ?-diketone compound to form a dissolved rare earth element mixture. A rare earth element of the rare earth element magnetic material and the ?-diketone compound are reacted to form a ?-diketonate chelate complex and the dissolution organic solvent is removed. The ?-diketonate chelate complex is removed using a separation organic solvent, and the ?-diketonate chelate complex is recovered. Additional methods are also disclosed.

Abstract: A phosphoranimine compound comprising a cationic portion bonded to a nitrogen atom of the phosphoranimine compound, a phosphorus atom bonded to the nitrogen atom, pendant groups bonded to the phosphorus atom, and a counterion. An electrolyte solution comprising at least one phosphoranimine compound is also disclosed, as is an energy storage device including the electrolyte solution.