5results about How to "Increase ion concentration" patented technology

The application provides a carbon nanodot-based temperature sensor and a preparation method thereof. The carbon nanodot-based temperature sensor comprises, from bottom to top, a substrate layer, an interdigital electrode layer and a sensing layer. The sensing layer comprises hydrophilic carbon nanodot particles and an ionic salt. The sensing layer is formed by drop coating of a mixed aqueous solution of the hydrophilic carbon nanodot particles and the ionic salt. The preparation method is simple and easy to implement, and has low cost. The prepared temperature sensor has high sensitivity, high precision and high stability. The sensitivity of the temperature sensor reaches 345951.8%℃ ‑1 .

This utility model provides an electrolytic generator and hot water equipment for supplementing minerals. The electrolytic generator includes a shell, a mineral filter element, and an electrode module. The shell is connected to an inlet pipe and an outlet pipe. The electrode module is connected to the shell. The mineral filter element is disposed in the shell and includes a cover plate and a filter element body. The cover plate and the filter element body are detachably connected. The filter element body contains minerals and is connected to the shell. The detachable connection between the cover plate and the filter element body allows for adjustment of the type and quantity of minerals and facilitates replacement of minerals. While supplementing the mineral element content of the water, it also increases the ion concentration of the water. Electrolysis of the incoming water increases the hydrogen and oxygen content of the water.

This invention discloses a method and apparatus for extracting tellurium from tellurium-containing materials, comprising the steps of: mixing a sulfur-containing leaching agent with the tellurium-containing material to obtain a mixed slurry; subjecting the mixed slurry to cyclone electrolysis to obtain an anodic precipitate and a cathode product; and purifying the cathode product to obtain cathode tellurium. This invention combines selective leaching and electrowinning recovery of metallic tellurium into a single process, and utilizes the synergistic oxidation of anodic electro-oxidation and oxygen generation during electrolysis to destroy the difficult-to-leach elemental and alloy components in the tellurium-containing material, achieving one-step selective and efficient separation of tellurium-containing materials and preparation of high-purity tellurium products. By employing cyclone electrolysis to prepare cathode tellurium, this invention avoids the adverse effects of slow solution flow leading to reduced current efficiency and increased concentration polarization in traditional tellurium electrolysis, shortens the tellurium electrolysis cycle, and reduces the required concentration of impurity elements in the electrolyte, offering advantages such as high selectivity, high current density, and high product purity.

The invention relates to the technical field of magnesium phosphate cement materials, and particularly discloses a magnesium potassium phosphate cement-based material with high compactness and high salt corrosion resistance and application of the magnesium potassium phosphate cement-based material. The magnesium potassium phosphate cement-based material is prepared from the following components in parts by weight: 30 to 40 parts of dead burned magnesium oxide, 15 to 20 parts of monopotassium phosphate, 3 to 5 parts of retarder, 0.01 to 0.03 part of crystalline phosphate, 30 to 40 parts of fine aggregate and 8 to 13 parts of mixing water. Wherein the molecular formula of the crystalline phosphate is KNaMg2 (PO4) 2.14 H2O. By introducing the crystalline phosphate in a special structural form, the hydration evolution path and the microstructure of the magnesium potassium phosphate cement-based material in a salt erosion environment are effectively improved, and the salt erosion resistance is remarkably improved.

The invention discloses a method for regulating and controlling the migration rate of water in an alkaline zinc-iron flow battery. By selecting the alkali metal salt additives with different hydrophilic and hydrophobic characteristics (judged according to the size of free energy change combined with water molecules) of anions, the number and size of water molecule clusters in the negative electrode electrolyte can be regulated and controlled, so that the water migration rate in the battery circulation process is regulated. Meanwhile, a related prediction calculation model is provided, and the incidence relation between the free energy change of combination of anions and water molecules and the water migration rate of the zinc-iron flow battery is established. The alkali metal salt additive with the high-hydrophobicity anions can remarkably reduce the migration rate of the electrolyte, so that the cycle life of the battery is prolonged, and the maintenance cost of the electrolyte in the actual use process of the battery is greatly reduced.