Abstract: Provided are integrated processes for the conversion of ethylene oxide to polypropiolactone. Systems for the production of polypropiolactone are also provided.

Abstract: Provided are integrated processes for the conversion of ethylene oxide to polypropiolactone. Systems for the production of polypropiolactone are also provided.

Abstract: The present disclosure provides compounds useful as electrolyte materials, and lithium sulfur batteries comprising the same.

Abstract: Exemplary cathode materials include a mixture of an electroactive sulfur material (e.g., S8) and a blended non-sulfur electroactive material comprising two or more non-sulfur electroactive materials, wherein the blended non-sulfur electroactive material is selected such that a discharge voltage profile of the blend of intercalation materials—considered apart from the sulfur electroactive material—has a discharge voltage profile that has substantial overlap with the discharge voltage profile of the sulfur electroactive material. For example, in typical ether electrolytes commonly used in sulfur batteries the discharge voltage profile of S8-Li2S conversion has multiple plateaus (e.g., two plateaus) due to the multistep conversion of sulfur to soluble/intermediate polysulfides (PS) followed by progression to solid or quasi-solid products (e.g., Li2S2/Li2S).

Abstract: Presented herein is a cathode material for a carbon-free (including relatively carbon-free) cathode, the cathode material comprising (i) sulfur and/or a lithium sulfide and (ii) a different, non-carbon electroactive material such as a metal chalcogenide. In certain embodiments, it is found that the carbon-free cathode material facilitates improved ion transport while maintaining satisfactory mechanical stability and electrical connection of the cathode without use of conductive carbon additives.

Abstract: Provided herein are systems, and methods of using such systems, for producing acrylic acid from ethylene oxide and carbon monoxide on an industrial scale. The composition includes: polypropiolactone having a concentration of at least 90 wt %; cobalt or cobalt ions in an amount greater than 0 ppm to 100 ppm; beta propiolactone in an amount greater than 0 ppm to 100 ppm; and tetrahydrofuran and/or methyl-tert-butyl ethery in amount greater than 0 ppm to 100 ppm.

Abstract: Disclosed are compositions, systems and methods related to a polypropiolactone composition comprising polypropiolactone polymers. Such polymers include polypropiolactone chains of Formula (I): where n is an integer from 10 to about 1,000 and Y is either —H or a cation.

Abstract: The present invention provides biodegradable projectiles for toy launchers that contain viable seeds. When lost outdoors the projectiles do not pollute the environment but instead degrade naturally and the seeds grow into plants that enhance the landscape.

Abstract: Provided are integrated processes for she conversion of ethylene oxide to polypropiolactone. Systems for the production of polypropiolactone are also provided.

Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.

Abstract: Provided are integrated processes for the conversion of ethylene oxide to polypropiolactone. System for the production of polypropiolactone are also provided.

Abstract: This application relates to nanostructured materials having selectively permeable structures that separate a liquid phase contained within the nanostructure from a volume outside of the nanostructure, and methods of making same. Such materials may be used in the manufacture of lithium anode compositions for secondary batteries or other energy storage devices.

Abstract: This application relates to nanostructured materials having selectively permeable structures that separate a liquid phase contained within the nanostructure from a volume outside of the nanostructure, and methods of making same. Such materials may be used as electrode materials for secondary batteries or other energy storage devices.

Abstract: Provided herein are systems, and methods of using such systems, for producing acrylic acid from ethylene oxide and carbon monoxide on an industrial scale. The composition includes: polypropiolactone having a concentration of greater than at least 90 wt %; a residual cobalt or ions thereof from a carbonylation catalyst in an amount of 10 ppm or less; acetic acid in an amount of 10 ppm or less; and tetrahydrofuran in amount of 10 ppm or less.

Abstract: This application relates to nanoparticles having improved electroactive cores comprising polythionate molecules (e.g. compounds with a structure ?O3S—(S)n—SO3?) encapsulated in shells, such as those that may be used as electrode materials for secondary batteries or other energy storage devices, and methods of making same.

Abstract: Described herein are methods of preparing poly(alkylene carbonate) polymers comprising an increased ratio of primary hydroxyl end groups to secondary hydroxyl end groups, and compositions thereof.

Abstract: Described herein are methods of preparing poly(alkylene carbonate) polymers comprising an increased ratio of primary hydroxyl end groups to secondary hydroxyl end groups, and compositions thereof.

Abstract: In one aspect, the present invention encompasses compositions of sustainable polycarbonate polymers, methods of producing such polymers, and methods for evaluating whether certain constituents of a polymer chain are derived from biomass or a fossil carbon source.

Abstract: The present invention provides biodegradable projectiles for toy launchers that contain viable seeds. When lost outdoors the projectiles do not pollute the environment but instead degrade naturally and the seeds grow into plants that enhance the landscape.

Abstract: The present invention encompasses polymer compositions comprising aliphatic polycarbonate chains containing functional groups that increase the polymer's ability to wet or adhere to inorganic materials. In certain embodiments, chain ends of the aliphatic polycarbonates are modified to introduce silicon-containing functional groups, boron-containing functional groups, phosphorous-containing functional groups, sulfonic acid groups or carboxylic acid groups.