5results about How to "High electrical conductivity" patented technology

The invention relates to the technical field of sodium ion battery positive electrode materials, in particular to a high-voltage positive electrode material, a preparation method thereof, a positive electrode plate and a sodium ion battery. The high-voltage positive electrode material comprises an O3-phase layered oxide matrix material and a coating layer coating the surface of the O3-phase layered oxide matrix material, the chemical formula of the O3-phase layered oxide base material is NaaNixAyMnpGqO2, A comprises a metal element with the valence of + 2 and / or + 3, and G comprises a metal element with the valence of + 4; and modification elements in the coating layer comprise at least one of Al, B, Ca, Co, Ce, La, Mg, Mo, Nb, Sr, Sn, W, Y, Zr, Zn, Bi and Ti. The material has reversible phase change under high voltage, can work under high voltage, and has excellent cycle performance.

A method for preparing a capacitive deionization anode for phosphate adsorption and desorption, and its application, belong to the field of inorganic phosphorus wastewater adsorption and enrichment. This invention aims to solve the problems of existing adsorption materials, such as low phosphate adsorption capacity, difficulty in reusing the adsorbent, or poor conductivity. Method: 1. Preparation of a PEDOT / YMOF-NH2 composite material; 2. Preparation of a capacitive deionization anode. Application: It is used for the adsorption and desorption of phosphates in phosphate-containing water. This invention is used for the preparation of a capacitive deionization anode for phosphate adsorption and desorption.

This application discloses a method for preparing a graphene / carbon nanotube composite slurry and its application, relating to the field of electrochemical sensing. The method includes: S1, placing multi-walled carbon nanotubes in concentrated sulfuric acid, reacting, washing with deionized water until neutral, and drying to obtain carboxylated carbon nanotubes; S2, adding the carboxylated carbon nanotubes to thionyl chloride, stirring the reaction, rinsing with tetrahydrofuran, and drying to obtain acyl chloride-based carbon nanotubes; S3, mixing the following components: 4.0-6.0% multi-walled carbon nanotubes, graphene microsheets... 0.2-1.0%, dispersant 0.5-1.0%, melamine 3.0-6.0%, balance NMP; S4, add graphene oxide / carbon nanotube filter material to dilute hydrochloric acid solution for acid washing and purge with nitrogen bubbles, stir evenly, filter, dry, and repeat 4 times. Mix and disperse each component in N-methylpyrrolidone to improve the uniformity of the mixture. Carbon nanotubes and graphene microsheets are uniformly dispersed in NMP to reduce the possibility of agglomeration and break up the already agglomerated groups.

The utility model relates to the technical field of ferrite processing, in particular to a resistance measuring device for ferrite processing, which comprises a base, a pressing piece and two conductive contacts, and is characterized in that the base is provided with a placing plane for placing ferrite; the pressing piece is movably arranged above the base in the vertical direction perpendicular to the containing plane. The two conductive contacts are arranged on the pressing piece in a spaced mode in the transverse direction perpendicular to the vertical direction, the two conductive contacts are connected through a double-end lead screw made of non-conductive materials so that the distance between the two conductive contacts in the transverse direction can be adjusted, and the two conductive contacts can be connected with two probes of a universal meter respectively. According to the utility model, through the cooperative use of the base, the pressing piece and the two conductive contacts, multiple groups of resistance data of the ferrite can be measured and obtained, and the average resistance value of the ferrite can be obtained by integrating the multiple groups of resistance data, so that the measurement precision is effectively improved.

The present application discloses a titanium niobate material, a preparation method thereof and a battery, comprising the following steps: dispersing a niobium source and a titanium source in a solvent to obtain a first suspension; dispersing a compound containing fluorine ions and transition metal ions or a fluorine ion compound and a transition metal ion compound in a solvent to obtain a second suspension; mixing and calcining the first suspension and the second suspension to obtain a titanium niobate material, and then using the titanium niobate material to make a battery. The present invention uses fluorine and transition metal ions to synergistically dope and modify the titanium niobate material. Fluorine ions are doped into oxygen sites to improve electrical conductivity; doping with transition metal ions with larger radii increases the unit cell volume and improves the diffusion rate of lithium ions. The synergistic effect of fluorine and transition metal ion doping improves the electronic and ionic conductivity of the titanium niobate material simultaneously without sacrificing compaction density and energy density, so that the titanium niobate material exhibits excellent electrochemical properties.