Fluorine-doped carbon nitride-polymer composite solid electrolyte as well as preparation method and application thereof

• Main Authors: FEI GUIQIANG, MA YONGNING, WANG HAIHUA, LIU XUAN, SUN LIYU, HU GUANGYU
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a fluorine-doped carbon nitride polymer composite solid electrolyte and a preparation method and application thereof, and the method comprises the following steps that: 20 parts by weight of a carbon nitride precursor and 1-10 parts by weight of a fluorine source are uniformly mixed to obtain mixed powder A; the mixed powder A is heated to 450-600 DEG C for heat treatment,heat preservation is conducted for 2-5 hours, and fluorine-doped carbon nitride powder B is obtained; 0.02-0.6 part of the powder B, 0.2-1 part of salt, 2 parts of a polymer matrix and an organic solvent are mixed in sequence, and stirred to obtain a mixed solution C; and film forming treatment is carried out on the mixed solution C, and vacuum drying is carried out to obtain the fluorine-doped carbon nitride polymer composite solid electrolyte. According to the prepared fluorine-doped carbon nitride, the ionic conductivity, the ionic mobility and the electrochemical stability window of the composite solid electrolyte