3results about How to "Retain performance" patented technology

This application relates to the field of solar cell technology and discloses a method for recycling the bottom cell in a perovskite tandem solar cell. The perovskite tandem solar cell includes a top cell, an inorganic functional layer, and the bottom cell stacked sequentially. The top cell includes a perovskite light-absorbing layer disposed on the side of the inorganic functional layer facing away from the bottom cell. The inorganic functional layer and the perovskite light-absorbing layer have different coefficients of thermal expansion. The recycling method includes the following steps: cooling the perovskite tandem solar cell; and heating the cooled perovskite tandem solar cell to peel the perovskite light-absorbing layer off from the inorganic functional layer. Using the recycling method provided in this application, the performance of the bottom cell can be effectively preserved, ensuring its stability during secondary use.

The application relates to the technical field of high polymer materials, and particularly discloses a bio-based polyether ether ketone as well as a preparation method and application thereof. The bio-based polyether ether ketone is prepared by the following steps: mixing a bio-based diphenol monomer, alkali, 4,4'-difluorobenzophenone, a water-carrying agent and a polar organic solvent, refluxing the water-carrying agent at 30-150 DEG C, evaporating the water-carrying agent at 40-150 DEG C, performing a final polymerization reaction at 150-260 DEG C, and then sequentially performing precipitation, washing and drying to obtain the bio-based polyether ether ketone. The bio-based polyether ether ketone provided by the application uses renewable biomass as a raw material to construct a core molecular structure, retains the core properties of traditional polyether ether ketone, such as high-temperature resistance and chemical corrosion resistance, and optimizes and improves the solubility and processing fluidity.

This application discloses a composite high-flowability, high-conductivity conductive masterbatch and its preparation method, relating to the technical field of conductive materials. The masterbatch uses a fiber-forming polymer as a matrix, compounded with conductive carbon black, graphene, silver nanosheets, carbon nanotubes, and modified MXene nanosheets, along with coupling agents, dispersants, antioxidants, and lubricants. The modified MXene nanosheets are modified with an amino-functionalized modifier and a polysaccharide mixture of sodium alginate and agar. Amino grafting improves interfacial compatibility, while polysaccharide coating inhibits filler agglomeration and oxidation, optimizing the dispersion of the conductive filler in the matrix. This masterbatch constructs a multi-level continuous conductive network, significantly improving melt flowability, conductive stability, and mechanical properties, effectively solving the problems of easy agglomeration, poor flowability, and insufficient spinnability of traditional conductive masterbatches.