3 results about "Carbonic acid" patented technology

The invention relates to a battery technology, in particular to a solid sodium battery electrolyte and a preparation and an application thereof. The electrolyte is a carbonic ester polymer, a sodium salt and a porous support material, wherein the thickness of the electrolyte is 20-600 microns; the ionic conductivity is 1*10<-5>S/cm to 1*10<-3>S/cm; and an electrochemical window is greater than 3.6V. The preparation comprises the following steps: dissolving the carbonic ester polymer and the sodium salt into a solvent at a certain ratio; preparing a film on the porous support material; and carrying out vacuum drying to obtain the solid sodium battery electrolyte material. The assembled solid sodium battery is good in rate capability and has excellent long-cycle stability; and no electrolyte is added, so that the safety is high. The main body material is the carbonic ester polymer, so that the price is low; and the cost is low. The solid sodium battery electrolyte material is simple to prepare.

The invention discloses environment-friendly impermeable composite bentonite, and belongs to the field of green chemistry and environmental protection. The composite bentonite is prepared from the following components in parts by mass: 1000-1200 parts of bentonite, 90-120 parts of sodium carbonate, 300-500 parts of a biodegradable polyester material, 50-100 parts of a cross-linking agent, 30-50 parts of a drying agent and 30-50 parts of a preservative; wherein the bentonite is granular bentonite; the biodegradable polyester material is one of poly (trimethylene carbonate), polycaprolactone andpolyvalerolactone; the cross-linking agent is N-hydroxymethyl acrylamide; the drying agent is at least one of bamboo charcoal and quartz sand; and the preservative is copper sulfate. By adding the biodegradable material and the cross-linking agent, the composite bentonite has good anti-seepage performance, can be biologically degraded, and has a wind indicator effect on the development of green chemistry.