Abstract: A shock absorber for an automobile with adaptive damping includes a cylinder barrel, a piston rod, a damping valve, a nitrogen container and a flute tube assembly. The flute tube assembly includes a core tube socket, an inner tube and an outer tube. A row of damping through holes is formed in each of two ends of the outer tube, a first check valve is arranged at one end of the outer tube and inserted into the piston rod, and the other end of the outer tube is arranged on the core tube socket and is connected to the nitrogen container through a first oil tube pipeline; the core tube socket is communicated with the first oil tube pipeline through a second check valve; the bottom end of the inner tube is fixed to the core tube socket and connected to the nitrogen container through a second oil tube pipeline.

Abstract: An interlayer material for a lithium-sulfur battery, and a lithium-sulfur battery, the interlayer material including electrically conductive MOF modified carbon fiber paper material between the separator and cathode accelerating electron transfer and having catalytic and barrier effect on lithium polysulfides. The paper material is prepared by: pretreatment of the paper by subjecting the carbon fiber paper to hydrophilic treatment; preparation of carbon fiber paper grown with Co3(HITP)2 including: complexing Co2+ and hexaiminotriphenylene on the paper surface, and allowing the product to grow in situ; and removal of structural impurities.

Abstract: A material with pine-branch like samarium oxide/graphene/sulfur gel structure, and a preparation method and use thereof. The material is reduced graphene oxide carrying pine-branch like samarium oxide on the surface to form a cross-linked gel structure, and sulfur is loaded on the gel structure. The preparation method includes: subjecting graphene oxide and a samarium salt to hydrothermal reduction to prepare a reduced graphene oxide/samarium precursor; under an inert atmosphere, thermolysing the reduced graphene oxide/samarium precursor to obtain a reduced graphene oxide/pine-branch like samarium oxide gel; and melting and diffusing the sulfur onto the reduced graphene oxide/pine-branch like samarium oxide gel. The material with pine-branch like samarium oxide/graphene/sulfur gel structure greatly improves the electrochemical performance of lithium-sulfur batteries.

Abstract: The present disclosure provides core-shell nickel ferrite, a nickel ferrite@C material and preparation methods and application thereof. The preparation method of the core-shell nickel ferrite includes: preparing nickel iron glycerate ball powder by a solvothermal method; and under an air condition, heating the nickel iron glycerate ball powder at a heating rate of lower than 1.5° C./min to not less than 350° C. for performing calcination to obtain the core-shell nickel ferrite. The preparation method of the nickel ferrite@C material includes: performing a phenolic resin condensation reaction on the core-shell nickel ferrite, resorcinol and formaldehyde to obtain a phenolic resin (RF) coated core-shell nickel ferrite@RF composite material; and in an inert atmosphere, calcining and carbonizing the nickel ferrite@RF composite material to obtain the nickel ferrite@C material.