| abstract |
The invention discloses a preparation method of a high temperature-resistant P(VDF-TrFE) composite double-layer film with high energy storage density. First, Ba x Sr 1-x TiO 3 nanoparticles are prepared, and poly(vinylidene fluoride-trifluorocarbon) ethylene) and N, N-dimethylformamide to prepare the first film-forming solution; then Ba x Sr 1-x TiO 3 is dispersed in the first film-forming solution to form a stable suspension; the P (VDF-TrFE) composite single-layer film was used as the bottom film, and a mixture of polymethyl methacrylate and acetoethyl acetate was used to prepare the top film to obtain a high-temperature-resistant P(VDF-TrFE) composite double-layer film with high energy storage density finished product. By using the preparation method provided by the present invention, a P(VDF-TrFE) composite double-layer film with higher energy storage density, better high temperature resistance, higher breakdown electric field and better temperature stability of energy storage density can be obtained, Therefore, it has broad application prospects in the field of capacitors. |