Fluorine-doped covalent triazine skeleton polymer and sulfur-containing compound thereof, and preparation method and application of fluorine-doped covalent triazine skeleton polymer and sulfur-containing compound
A covalent triazine skeleton and polymer technology, applied in structural parts, lithium batteries, electrical components, etc., can solve problems such as poor cycle stability and sulfur loss, and achieve small polarization, high specific surface area, and enhanced interaction Effect
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Embodiment 1
[0045] Example 1 Synthesis of FN-CTF (1:0.2):
[0046] Synthesis process such as figure 1 As shown, tetrafluoroterephthalonitrile (TFTN, 100.5 mg, 0.5 mmol), terephthalonitrile (DCB, 12.8 mg, 0.1 mmol) and ZnCl were combined 2 (ZnCl 2 , 0.57g) mixed and ground and transferred to a quartz ampoule (3cm×12cm) under an inert atmosphere. It was then evacuated, sealed, and heated at 400°C for 40 hours. After the reaction was complete, the ampoule was cooled to room temperature and opened. The reaction mixture was then triturated and washed thoroughly with water to remove most of the ZnCl 2 . Stir in dilute hydrochloric acid for a further 24 hours to remove residual salts. The solid product was collected by filtration and washed sequentially with tetrahydrofuran and water. The black powder was then vacuum dried at 120°C for 12 hours. The isolated yield was approximately 76.1%.
Embodiment 2
[0047] Example 2 Synthesis of FN-CTF (1:0.5):
[0048] Synthesis process such as figure 1 As shown, tetrafluoroterephthalonitrile (TFTN, 60.3 mg, 0.3 mmol), terephthalonitrile (DCB, 19.2 mg, 0.15 mmol) and ZnCl were combined 2 (ZnCl 2 , 0.40g) mixed and ground and transferred to a quartz ampoule (3cm×12cm) under an inert atmosphere. It was then evacuated, sealed, and heated at 400°C for 40 hours. After the reaction was complete, the ampoule was cooled to room temperature and opened. The reaction mixture was then triturated and washed thoroughly with water to remove most of the ZnCl 2 . Stir in dilute hydrochloric acid for a further 24 hours to remove residual salts. The solid product was collected by filtration and washed sequentially with tetrahydrofuran and water. The black powder was then vacuum dried at 120°C for 12 hours. The isolated yield was approximately 69.8%.
Embodiment 3
[0049] Example 3 Synthesis of FN-CTF (1:1):
[0050] Synthesis process such as figure 1 As shown, tetrafluoroterephthalonitrile (TFTN, 40.2 mg, 0.2 mmol), terephthalonitrile (DCB, 25.6 mg, 0.2 mmol) and ZnCl were combined 2 (ZnCl 2 , 0.33g) mixed and ground and transferred to a quartz ampoule (3cm×12cm) under an inert atmosphere. It was then evacuated, sealed, and heated at 400°C for 40 hours. After the reaction was complete, the ampoule was cooled to room temperature and opened. The reaction mixture was then triturated and washed thoroughly with water to remove most of the ZnCl 2 . Stir in dilute hydrochloric acid for a further 24 hours to remove residual salts. The solid product was collected by filtration and washed sequentially with tetrahydrofuran and water. The black powder was then vacuum dried at 120°C for 12 hours. The isolated yield was approximately 67.5%.
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