3results about How to "Increase capillary force" patented technology

The invention discloses a leakproof composite phase change material and application of the leakproof composite phase change material in wide temperature range operation of a lithium battery, and belongs to the technical field of battery thermal management. Boron nitride nanosheet modified ceramic fibers are used as an internal supporting framework to enhance thermal conductivity and provide capillary constraint, and a core material is a phase change medium such as paraffin or n-octadecane; the invention further discloses a preparation method of the composite material and application of the composite material in lithium battery thermal management, the composite material solves the problems that a traditional phase change material is prone to leakage, poor in heat conduction and single in function, the battery can be rapidly heated at low temperature, heat can be efficiently absorbed and diffused at high temperature / normal temperature and high rate, and the service life of the battery is prolonged. The safe, efficient and stable operation of the lithium battery in a wide temperature range is realized, the leak-proof performance is high, the cycling stability is good, the preparation cost is controllable, and the application prospect is wide.

The application discloses a composite aerogel and a preparation method and application thereof, and belongs to the technical field of functional materials and environmental treatment. In the application, delignified cotton stalk cellulose is compounded with MXene to prepare a suspension, directional freezing self-assembly is carried out by using n-heptane as a heat transfer medium, and after freezing drying and polydimethylsiloxane dip coating, a PDMS / CMNF / MXene composite aerogel is obtained. The aerogel has an ultra-fine scale, high-density vertically arranged pore channels and a multi-level pore structure, and the pore channel diameter is 20-40 mu m. Under the driving of solar energy, the surface temperature of the aerogel can reach above 120 DEG C, the rapid in-situ viscosity reduction and efficient adsorption of high-viscosity crude oil are realized, the adsorption capacity is more than 56 times of the weight of the aerogel, and the performance retention rate is greater than 90% after 10 cycles. The application provides an efficient, green and recyclable solution for the treatment of marine high-viscosity crude oil leakage.

This invention belongs to the field of low-carbon alkane energy value-added and carbon neutrality technology, specifically involving nickel-based physicochemically confined functional catalysts and their large-scale preparation and applications. The catalyst of this invention is prepared using a microemulsion method and is a hollow nanotube-shaped coated shell anchoring intermetallic compound Ni-MO. x A physical-chemical dual-confined catalyst (M is La, Ce, Mg or V) combines the physical confinement effect of nanoreactors, the electronic structure of intermetallic compound nanoparticles, and the nano-quantum effect of intermetallic compounds (including single atoms, clusters or sub-nano islands) to promote the synthesis of syngas from low-carbon alkanes in conjunction with CO2 reforming.