4results about How to "Short diffusion path" patented technology

The present application relates to the technical field of molecular sieve, in particular to a kind of self-supporting MFI nanosheet molecular sieve and its preparation method and purposes, the preparation method of the self-supporting MFI nanosheet molecular sieve includes the following steps: 1) after mixing silicon source, aluminium source, alkali source, template agent and water, obtain gel mixture;2) the gel mixture obtained in step 1) is crystallized, i.e. the self-supporting MFI nanosheet molecular sieve is obtained;Wherein, the template agent is imidazolyl quaternary ammonium salt compound.The self-supporting MFI nanosheet molecular sieve prepared in the present application does not need expensive surfactant, no phosphorus species is left in channel after calcination, the range of silicon-aluminum ratio is wide, and it is simple and easy to repeat.

A lithium-mediated electrochemical method for ammonia synthesis, relating to the field of ammonia synthesis technology, solves the technical problems of severe side reactions, limited nitrogen mass transfer, and poor interfacial stability in existing lithium-mediated ammonia synthesis systems. Tetra(4-formylphenyl)porphyrin iron and an amino-containing multifunctional organic ligand are added to a mixed solvent of n-butanol and o-dichlorobenzene. An acid catalyst is added, and after stirring until homogeneous, the mixture is degassed and sealed for reaction. The solid product is collected by centrifugation, washed, and dried to obtain COF powder. This powder is then added to an ethanol-water solution, followed by ultrasonic dispersion with Nafion solution. The powder is then drop-coated / sprayed onto the surface of a carbon paper current collector and dried. This powder is used as the working electrode, with a platinum mesh as the counter electrode, a platinum wire as the quasi-reference electrode, and a LiBF4 tetrahydrofuran solution as the electrolyte. Ethanol is used as the proton donor, and electrolysis is performed under a nitrogen atmosphere using a constant current. This invention can be applied to the field of ammonia synthesis technology.

The utility model discloses a single battery and relates to the technical field of batteries, the single battery comprises a shell, a first cover plate assembly, a second cover plate assembly, a first inner core, a second inner core and a separation structure, a liquid injection hole is formed in the side wall of the shell, the separation structure is arranged in the shell, and a first containing space is defined by the separation structure, the shell and the first cover plate assembly; the separation structure, the shell and the second cover plate assembly define a second containing space, the first inner core and the second inner core are arranged in the first containing space and the second containing space respectively, the separation structure is provided with a liquid passing channel, and the liquid injection hole communicates with the first containing space and the second containing space through the liquid passing channel; according to the technical scheme provided by the embodiment of the invention, the liquid injection hole is formed in the side wall of the shell, so that the electrolyte can uniformly permeate into the two inner cores, the consistency of the battery is improved, the output performance of the battery is optimized, and moreover, the diffusion path of the electrolyte is shorter and the liquid injection speed can be increased by forming the liquid injection hole in the middle of the shell.

The invention discloses a high-rate lithium ion battery graphite negative electrode material and a preparation method thereof. The high-rate lithium ion battery graphite negative electrode material is prepared by the steps of crushing petroleum coke particles, calcining at low temperature, graphitizing at high temperature, cooling, demagnetizing and the like. Through the synergistic effect of multiple processes of raw material crushing, low-temperature calcination and high-temperature graphitization, a large number of micropores and defects are introduced into a carbon matrix, and a shorter diffusion path and an isotropic ion transmission channel are provided for lithium ions; and the lithium ion battery graphite negative electrode material with better rate capability, cycling stability and dynamic performance is prepared.