5results about How to "Improve surface wettability" patented technology

This invention relates to the field of ion sieve technology, providing a titanium-based lithium-ion adsorbent, its preparation method, and its applications. The invention involves pyrolyzing NH2-MIL-125(Ti), then mixing it with lithium carbonate for calcination, granulating it using an ethylene-vinyl alcohol copolymer as a binder, and finally acid washing to obtain the titanium-based lithium-ion adsorbent. This invention integrates metal-organic framework (MOF)-derived carbon intercalation, nitrogen doping, and polymer-assisted granulation into a single process, preparing a particulate adsorbent with a hierarchical porous structure, strong hydrophilicity, and abundant active sites, showing great potential for industrial applications. Example results show that the adsorbent of this invention, under conditions of pH=12 and 25℃, exhibits a high Li-ion concentration of 24 h. + The adsorption capacity reached 33.95 mg / g. After five cycles of adsorption and desorption, the adsorption capacity could still reach 96.9% of the initial adsorption capacity, and the titanium dissolution loss in each cycle was only about 0.4%.

This application relates to a hole transport layer, a solar cell, a photovoltaic module, and a photovoltaic system. The hole transport layer includes: a hole transport polymer; and a coordination polymer, which is intertwined with the hole transport polymer to form a self-assembled mixed-phase structure. The hole transport layer provided in this application, on the one hand, allows the structural units of the coordination polymer to capture metal ions at the interface of the perovskite layer, improving the surface wettability of the perovskite solution in the hole transport layer and enhancing the crystallinity of the perovskite film, thereby improving the photoelectric conversion efficiency of the solar cell; on the other hand, the self-assembled mixed-phase structure formed by the intertwining of the coordination polymer and the hole transport polymer achieves lattice contact with the perovskite layer at the hole transport layer / perovskite layer interface, reducing the direct contact area between the hole transport layer and the perovskite layer, thereby reducing non-radiative recombination losses of charge carriers caused by contact and improving the device performance of the solar cell.

The invention provides a silver-based micro-nano structure protective quick-dry cleaning agent and a preparation and use method thereof, and belongs to the technical field of preparation and use of molded board cleaning agents. The cleaning agent is composed of isopropanol, ethyl acetate, a nonionic surfactant and a chelating agent. Wherein the mass ratio of the isopropanol to the ethyl acetate is 70: (10-30), the mass of the nonionic surfactant accounts for 5%-15% of the mass of the cleaning agent, and the mass of the chelating agent accounts for 5%-10% of the mass of the cleaning agent. According to the cleaning agent, a basic organic solvent system is reasonably constructed, and a proper amount of nonionic surfactant and complexing agent are introduced, so that organic dirt, adhesive residues and oxide layers are efficiently removed, and meanwhile, the surface appearance stability and reflection integrity of patterns of a silver-based micro-nano structure are maintained.

This invention relates to the field of solar cell technology, specifically to a hole transport layer containing betaine hydrochloride additive and its inverse wide-bandgap perovskite solar cell. The hole transport layer comprises a nickel oxide layer and a self-assembled molecular layer formed on its surface. The self-assembled molecular layer contains (4-(3,6-dimethyl-9H-carbazole-9-yl)butyl)phosphonic acid and betaine hydrochloride. The introduction of betaine hydrochloride improves the conductivity of the hole transport layer through the interaction of its carboxylic acid groups with nickel oxide, and inhibits its clustering behavior through interaction with the self-assembled molecules, thereby improving film uniformity and effectively passivating buried interface defects in the perovskite light-absorbing layer. The inverse wide-bandgap perovskite solar cell fabricated based on this hole transport layer exhibits significantly improved open-circuit voltage and fill factor, ultimately achieving a photoelectric conversion efficiency exceeding 21.7%. This invention provides an effective interface engineering strategy for fabricating efficient and stable wide-bandgap perovskite solar cells and tandem devices.