5 results about "Bismuth fluoride" patented technology

The present application relates to the field of biological medicine nanomaterials, and particularly relates to a kind of nanocomposite material and its preparation method and application.The preparation method of nanocomposite material provided by the present application, first, by a kind of room temperature fast, green method is synthesized hollow sodium bismuth fluoride carrier, and doping makes it have excellent upconversion luminescence performance, then using the excellent surface area of hollow sodium bismuth fluoride is successfully loaded photosensitizer MC540, clothing mould toxin, finally using DSPE-PEG-FA is modified, obtains nanocomposite material.It can effectively activate tumor cell endogenous calcium overload, induce tumor cell pyroptosis, realize the effect of efficient cancer treatment.

The invention discloses a metal negative electrode with a solid electrolyte interface layer, a preparation method of the metal negative electrode and a battery, and belongs to the technical field of batteries. A solid electrolyte interface layer is attached to the surface of the metal negative electrode; the interface layer is a composite interface layer containing bismuth alloy and metal fluoride. The preparation method of the metal negative electrode comprises the following steps: performing in-situ reaction on bismuth fluoride on at least one surface of the metal negative electrode to generate bismuth-containing alloy and metal fluoride; and the bismuth-containing alloy and the metal fluoride form a composite interface layer on the surface of the metal negative electrode, so that the metal negative electrode with the bismuth-based artificial solid electrolyte interface layer is obtained. The solid electrolyte interface layer on the surface of the metal negative electrode can effectively block direct contact between the metal negative electrode and electrolyte, and the problems of side reaction, dendritic crystal growth and the like are solved; the bismuth alloy in the bismuth-based artificial solid electrolyte interface layer provides high ionic conductivity, and the fluoride enhances the mechanical strength and interface stability.

The application relates to the field of laser technology, in particular to a bismuth fluoride-based fiber laser amplifier, which comprises a pump source for emitting pump light, a dichroic mirror, a bismuth fluoride-based fiber, a coupling lens and a second collimating lens, the coupling lens is located on the first side of the bismuth fluoride-based fiber, the second collimating lens is located on the second side of the bismuth fluoride-based fiber, the pump light transmitted through the dichroic mirror is focused and coupled into the bismuth fluoride-based fiber through the coupling lens, a seed source for emitting seed light, the seed light is focused and coupled into the bismuth fluoride-based fiber through the coupling lens or the second collimating lens, and the seed light is output from the end of the bismuth fluoride-based fiber far away from the seed source after being amplified by the bismuth fluoride-based fiber. The application is at least beneficial to providing a fiber laser amplifier for the 4.0-4.3-micron wave band, which has good stability, a simple structure, low cost and high output power.

The invention discloses a preparation method of an oxygen-ion-doped bismuth fluoride positive electrode material, and the electronic conductivity of the bismuth fluoride material is improved. The preparation method of the positive electrode material comprises the following steps: putting commercial bismuth fluoride powder into a tubular furnace, introducing oxygen, calcining at high temperature for a certain time until the oxygen ions are successfully doped into the bismuth fluoride material, and drying to obtain the bismuth fluoride positive electrode material. And mixing and ball-milling the successfully prepared doped bismuth fluoride material, sulfide solid electrolyte and conductive carbon in proportion to prepare a positive electrode material, and finally assembling the positive electrode material into an all-solid-state battery for performance analysis and test.

The invention discloses a negative-electrode-free sodium metal battery negative electrode current collector coating and a preparation method thereof, relates to a sodium battery negative electrode and a preparation method thereof, and aims to solve the technical problems of high nucleation overpotential and poor stable circularity of an existing negative-electrode-free sodium battery. The negative current collector coating of the negative-electrode-free sodium metal battery is prepared from an active substance, a conductive carbon material and an adhesive, wherein the active substance is bismuth fluoride, ferric fluoride, tin fluoride, bismuth oxide, antimony oxide, bismuth phosphate, antimony phosphate, bismuth acetate, lead acetate or antimony acetate. The active substance, the conductive carbon material and the adhesive are prepared into slurry, and the slurry is coated on the fluid and then dried. The half cell assembled by using the negative electrode current collector and sodium realizes the average coulombic efficiency of more than 99.5%, and realizes stable circulation for 300 circles in a sodium battery without a negative electrode. The method can be used in the field of sodium batteries or sodium metal batteries.