6results about How to "Increase infiltration rate" patented technology

This invention provides a soil moisture infiltration structure for apricot forests in the Loess Plateau region. The structure includes a tree basin with a central pit where a tree is planted. Several infiltration pipes are evenly distributed around the pit. Each infiltration pipe has a tube body with openings at both ends, and the lower section of the tube wall has perforations. This soil moisture infiltration structure for apricot forests in the Loess Plateau region collects rainwater by excavating the tree basin and burying the infiltration pipes. The pit promotes rainwater infiltration along the sidewalls of the plant, while the pipes guide the rainwater into the deeper soil layers, promoting water absorption. Water and fertilizer regulation is achieved through these infiltration pipes. During rainfall, the structure collects rainwater and promotes deeper soil water absorption, accelerating the infiltration rate and reducing soil moisture evaporation. This effectively improves the soil moisture environment around the rhizosphere, promotes apricot tree growth, and increases fruit yield.

The application discloses a pole piece, an electrochemical device and an electronic device. The pole piece comprises a current collector and an active material layer. The active material layer is arranged on one surface of the current collector. The active material layer is provided with a first groove, a second groove and a third groove. The first groove extends along the length direction of the current collector. One end of the second groove is communicated with the first groove. The other end of the second groove is extended and arranged. A first included angle is formed between the extension direction of the second groove and the extension direction of the first groove. One end of the third groove is communicated with the second groove. The other end of the third groove is extended and arranged. A second included angle is formed between the extension direction of the third groove and the extension direction of the second groove. The pole piece aims to improve the transverse infiltration speed of the electrolyte in the battery and improve local lithium precipitation.

The application relates to a diaphragm and an electrochemical device and an electronic device comprising the same, and belongs to the technical field of electrochemical energy storage. The diaphragm provided by the application comprises a diaphragm base material and a solid-state ion source layer arranged on at least one side of the diaphragm base material, the solid-state ion source layer comprising lithium salt, a functional additive and an ion conductor composite, the ion conductor composite comprising a binder and an ion conductor; the lithium salt comprises at least one of lithium bisfluorosulfonylimide, lithium bis-trifluoromethanesulfonylimide, lithium difluoro(oxalato)borate, lithium tetrafluoroborate and lithium bis(oxalato)borate. The diaphragm provided by the application can be matched with a non-solute and low-viscosity electrolyte, the liquid injection time in preparation is reduced, the controllable release of lithium salt is realized, and the cycle stability and safety performance are improved.

A nonwoven fabric with longitudinal fluid conducting function, the nonwoven fabric comprises a first fiber web and a second fiber web, and each fiber web has a plurality of discrete longitudinal fiber bundles, the distribution density of the longitudinal fiber bundles is 1-50 bundles / cm 2 The fibers of the longitudinal fiber bundles are the same as the fibers in the fiber web, by arranging a plurality of discrete longitudinal fiber bundles in each fiber web, when the liquid reaches the fiber web with longitudinal fiber bundles, the liquid will quickly penetrate to the second fiber web along the longitudinal fiber bundles distributed therein or even be conducted to the absorbent core, realizing the rapid longitudinal fluid conducting of the liquid and improving the liquid infiltration speed.

The application discloses a lithium ion battery diaphragm with thermal stability and a preparation method thereof, and belongs to the technical field of lithium battery diaphragms. The method comprises the following steps: polyvinylidene fluoride is stirred and mixed in N-methyl pyrrolidone to obtain a preliminary slurry; boehmite powder is placed in the preliminary slurry, stirred and mixed, and ultrasonic treatment is conducted to obtain a final slurry; the final slurry is scraped and coated onto a glass plate and dried to form a shape; and the dried coating layer is peeled off from the glass plate to obtain the lithium ion battery diaphragm. The application can simply and economically obtain a novel diaphragm for a lithium ion battery and is easy to be mass-produced industrially. The diaphragm has effectively improved thermal stability, can effectively inhibit the thermal runaway risk of a lithium ion battery in the case of fire and the like, and reduces personnel casualties and property losses.

The application discloses a kind of negative electrode slurry, negative electrode sheet and preparation method thereof, belong to negative electrode slurry technical field;The negative electrode slurry includes: negative electrode active material 84.5~99 parts, water 80~140 parts, dispersing agent 0.1~1.5 parts, conductive agent 0.1~4 parts, binder 0.1~4 parts, electrolyte reserve storehouse emulsion 0.01~4 parts, the high molecular particle of core-shell structure is contained in the electrolyte reserve storehouse emulsion, the inner core of high molecular particle is acrylate, butadiene and styrene copolymer, shell is the copolymer of acrylic acid and acrylonitrile.In the present application, electrolyte reserve storehouse emulsion is added in negative electrode slurry, the inner core of high molecular particle contained therein can effectively adsorb electrolyte, can play the role of liquid preservation;And shell has certain rigidity, avoid the volume expansion of inner core after adsorbing electrolyte and then affect the performance of negative electrode sheet.