3results about How to "Reduce complexation" patented technology

This invention discloses an acid-triggered hydrogel plugging agent and its preparation method, comprising polyacrylamide, carboxylated tannic acid, and slow-release iron, wherein the mass ratio of polyacrylamide, carboxylated tannic acid, and slow-release iron is 10:0.03-0.06:0.005-0.01. This invention solves the problems of existing gel plugging agents being unable to remain stable in acidic environments for extended periods and being difficult to inject.

This invention discloses a pH-responsive slow-release calcium fertilizer compatible with potassium dihydrogen phosphate and its preparation method, belonging to the field of agricultural fertilizer technology. Each liter of the slow-release calcium fertilizer comprises the following components: 1000-1200 g of calcium nitrate tetrahydrate; 50-100 g of small peptide amino acid solution, wherein the free amino acid content in the small peptide amino acid solution is not less than 100 g / kg, and the small peptide amino acid content is not less than 330 g / kg; 60-100 g of erythritol; 3-10 g of sodium alginate; 10-50 g of citric acid; 10-40 g of mannitol; appropriate amount of triethanolamine for adjusting the pH value to 4.5-5.8; and water to a final volume of 1 L. This invention also provides a method for preparing the calcium fertilizer. This calcium fertilizer, through a unique synergistic stabilizing system of erythritol-small peptide-weak acid, not only can be mixed with potassium dihydrogen phosphate without precipitation, solving the problem of calcium-phosphorus antagonism, but also possesses pH-responsive release characteristics, intelligently releasing calcium ions in the acidic environment of plant rhizosphere, significantly improving calcium absorption and utilization.

This application relates to the field of batteries, providing a battery cell and its preparation method, a battery device, an electrical device, and an energy storage device. The preparation method of the battery cell includes: providing a cell assembly, wherein the cell assembly is formed by stacking or winding a positive electrode sheet, a separator, and a negative electrode sheet; providing a housing, and placing the cell assembly inside the housing; providing an electrolyte and injecting the electrolyte into the housing; and performing a formation step; wherein the negative electrode sheet includes a current collector, a negative electrode active material, a conductive agent, and a binder, and the binder includes a functional polymer, wherein the functional polymer is formed by chemically bonding a first reaction unit, a second reaction unit, and a third reaction unit to form a molecular network structure. This application can significantly improve the cycle life of the negative electrode, significantly improve the cycle stability and structural integrity of the silicon negative electrode, and provide effective technical support for the practical application of high-capacity lithium-ion batteries.