3results about How to "Strong surface adsorption" patented technology

The present invention discloses a microporous membrane and a preparation method and application thereof, wherein the microporous membrane comprises a polytetrafluoroethylene fiber membrane body and nano-oxide particles loaded with platinum group metals; the nano-oxide particles loaded with platinum group metals are uniformly distributed in the pores of the polytetrafluoroethylene fiber membrane body. The microporous membrane of the present invention has good wettability and self-humidification properties, and is used in a proton exchange membrane to reduce the hydrogen permeability of the proton exchange membrane, improve the anti-electrochemical degradation performance, and thus improve the life of the proton exchange membrane.

This invention provides a polymer electrolyte, its preparation method, and its application. The raw materials of the polymer electrolyte, by mass, include the following components: 8-12 parts of an olefin polymer, 4-8 parts of a sodium salt, 0.4-1.2 parts of hydrophobic fumed silica (SiO2), 7-30 parts of a fluorinated small-molecule plasticizer, and 35-85 parts of a solvent. The polymer electrolyte of this invention uses a fluorinated small-molecule plasticizer with weak solvation ability as the plasticizer in the electrolyte, which improves the mechanical properties of the electrolyte membrane. Simultaneously, it forms a competitive coordination effect with the residual solvent with strong solvation ability, which is beneficial for inhibiting the corrosion effect of sodium salt on the current collector. The hydrophobic fumed silica filler reduces the crystallinity of the polymer matrix and enhances the mobility of the polymer matrix segments, thereby improving the ionic conductivity.

The invention provides an MOFs-porous microsphere composite material as well as a preparation method and application thereof. The composite material comprises amino-modified porous microspheres and MOFs formed on the surfaces of the amino-modified porous microspheres, the amino-modified porous microspheres comprise porous microspheres with fumed silica, cellulose and phthalocyanine as main raw materials, and the cellulose is reacted with urea to introduce amino; the MOFs are mainly formed by performing in-situ growth on the surfaces of the amino modified porous microspheres by taking picolinic acid ligands and metal salts as raw materials, and metal ions in the metal salts are immobilized on the amino modified porous microspheres through amino groups introduced on the cellulose. The specific surface area of the composite material is 200-650 m < 2 > / g, the pore volume is 0.120-0.342 cm < 3 > / g, the average pore size is 6.5-8 nm, and the composite material has relatively strong physical adsorption and chemical adsorption performance on environmental smoke components such as nicotine and 3-vinylpyridine and can be used as an adsorption material for nicotine and 3-vinylpyridine.