3results about How to "Small heat release" patented technology

This application relates to the field of electrolyte materials technology, and in particular to a method for preparing lithium selenide. The method includes: obtaining a precursor source, the precursor source including lithium nitride and a selenium source, and subjecting the precursor source to multiple calcination treatments to obtain lithium selenide. The present invention uses lithium nitride as a lithium source and a selenium source to undergo a redox reaction to generate lithium selenide and nitrogen gas. This method has a low cost, does not produce carbon impurities in the prepared product, and the prepared lithium selenide can be used directly as a high-purity raw material for solid electrolytes. In addition, the reaction between lithium nitride and selenium has low exothermic reaction, the reaction is easy to control, and the safety is higher, avoiding the problem of low safety caused by high exothermic reaction of elemental selenium and elemental lithium in the prior art.

This invention pertains to composite material manufacturing technology and relates to a method and structure for curing and stamping at the chamfered position of a honeycomb sandwich structure autoclave. A thermally conductive material is laid on the plane where the stamping position of the honeycomb sandwich structure is located, extending from the stamping position to the center of the plane; the thermally conductive material is positioned between the release film, the breathable felt, and the vacuum bag.

This invention belongs to the field of lithium-ion battery material technology, specifically relating to a high-nickel single-crystal ternary cathode modified material and its preparation method. The method includes: ball milling a high-nickel single-crystal ternary precursor, lithium hydroxide monohydrate, and a cerium-tantalum co-doped lithium molybdenum oxyfluoride compound, followed by pre-sintering and high-temperature calcination under an oxygen atmosphere to obtain single-crystal powder particles; then mixing the single-crystal powder particles with a calcium-doped lithium boron phosphorus oxynitride compound, drying, and holding under a nitrogen atmosphere before sieving. The cerium-tantalum co-doped lithium molybdenum oxyfluoride compound is prepared by ball milling, drying, and segmented sintering of lithium carbonate, cerium oxide, tantalum oxide, molybdenum oxide, and lithium fluoride in a protective powder; the calcium-doped lithium boron phosphorus oxynitride compound is prepared by ball milling, segmented sintering, and ball milling and sintering with lithium nitride under nitrogen protection. This invention significantly improves the structural stability and electrochemical performance of the high-nickel single-crystal ternary cathode material.