5results about How to "Improved pore distribution" patented technology

The invention relates to the technical field of batteries, in particular to a negative electrode material preparation method based on a negative electrode aged hard carbon material, which comprises the following steps: firstly, crushing and grading an aged hard carbon precursor to obtain particles with a preset particle size; the preparation method comprises the following steps: performing pretreatment such as acid washing, alkali washing, water washing and ethanol washing, mixing a purified precursor with a coating material in proportion to form a uniform coating layer, pre-sintering in a protective atmosphere, and preliminarily stabilizing a material structure by controlling parameters such as a heating rate; and carrying out specific surface area detection on the pre-sintered primary product, and dynamically adjusting pre-sintering process parameters according to the specific surface area detection to ensure that the pore structure of the material reaches the standard. And performing high-temperature carbonization treatment on the material meeting the standard so as to repair the carbon layer structure and improve the conductivity. And finally, performing quality judgment by detecting the first coulombic efficiency of a finished product. According to the invention, the first coulombic efficiency, the specific capacity and the cycling stability of the regenerated hard carbon material are improved, and the recycling of the aging material is realized.

The application discloses a preparation method of a self-template nitrogen-doped sugarcane residue biochar electrode material and application thereof, and the preparation comprises the following steps: placing repeatedly cleaned sugarcane residue in a tubular furnace, and performing low-temperature carbonization under a nitrogen atmosphere. Then, the product after low-temperature carbonization is uniformly mixed with potassium hydroxide with a certain mass ratio in a mortar, and then the uniformly mixed sample is placed in the tubular furnace to perform activation under a nitrogen atmosphere. Finally, the obtained activated product is neutralized with hydrochloric acid to neutralize excessive alkali, then washed with deionized water until neutral, and vacuum dried to obtain the self-template nitrogen-doped sugarcane residue biochar electrode material. In the application, cheap and easily obtained sugarcane residue is used as a raw material to prepare a tubular structure biochar for electric adsorption, and no additional template is needed. Compared with similar technologies, the electrode is more excellent in effect and lower in cost, achieves the purpose of waste treatment with waste, and is an effective technical approach to realize the double carbon.

The invention discloses a calcium-based desulfurizing agent and a preparation method thereof. The calcium-based desulfurizing agent is prepared from the following raw materials in percentage by mass: 53-61% of modified calcium hydroxide, 22-27% of modified activated carbon, 4-8% of an alkali metal compound, 3-5% of a metal oxide and 7-10% of a composite adhesive, the modified calcium hydroxide is obtained by carrying out multi-stage hydrothermal reaction on calcium hydroxide and treating and modifying silicon dioxide and sodium silicate; the modified activated carbon is oxidized activated carbon loaded with iron oxide and magnesium oxide. The calcium-based desulfurizing agent prepared by the method has very high activity, the removal efficiency of SO2 in flue gas can be improved, and the utilization rate of the calcium-based desulfurizing agent can also be improved.

The invention relates to the technical field of coating preparation, and discloses a preparation method for preparing an inorganic gel coating based on iron-ore slag, which comprises the following steps: sieving coarse iron ore sludge to obtain fine iron ore sludge, and mixing fly ash with a dispersing agent to obtain a fly ash mixture; adding the liquid gel and water into a reaction container, and stirring at a high speed to obtain a mixture IV; sequentially adding titanium dioxide, fine iron ore sludge and a fly ash mixture into the mixture IV to obtain a mixture V; slowly adding a potassium silicate solution with the solid content of 25-35% to obtain a mixture VI; and adding a flatting agent and an alkali-resistant defoaming agent into the mixture VI, slowly dropwise adding deionized water, and continuously stirring to obtain the inorganic gel coating. According to the method, industrial solid waste resources are utilized, the production cost is reduced, meanwhile, high-added-value utilization is achieved, and the method has environmental protection benefits and practical value.

This invention provides a method for processing raw materials for enzymatic hydrolysis to produce lignocellulose, comprising the following steps: (1) heat-treating the lignocellulose-containing raw material; (2) selectively oxidizing and refining the heat-treated raw material; and (3) drying the selectively oxidized and refined raw material. This invention can increase the porosity of lignocellulose without increasing the refining intensity, and reduce pore closure caused by cellulose cutinization during the drying process after refining. It can produce lignocellulose materials with higher porosity, thereby producing lignocellulose materials with higher accessibility and reactivity.