Synthesis of F-containing coordination polymer, and application of F-containing coordination polymer to lithium ion battery cathode materials
A technology of coordination polymers and ions, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as low specific capacity, poor stability, and poor conductivity, and achieve the effects of convenient characterization, good stability, and high output
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Embodiment 1
[0026] 1) Weigh cobalt nitrate hexahydrate Co(NO 3 ) 2 ·6H 2 O (29.0mg, 0.1mmol), tetrafluoroterephthalic acid (H 2 tfbdc) (11.9 mg, 0.05 mmol) was dissolved in 4 mL of absolute ethanol, and the mixture was obtained after stirring evenly;
[0027] 2) The above mixed solution was placed in a 25mL autoclave and heated to 90°C for 3 days to react. After the reaction was completed, it was cooled to room temperature and filtered to obtain a pink-purple block crystal, which was the F-containing coordination polymer.
Embodiment 2
[0029] 1) Weigh cobalt nitrate hexahydrate Co(NO 3 ) 2 ·6H 2 O (14.5mg, 0.05mmol), tetrafluoroterephthalic acid (H 2 tfbdc) (11.9mg, 0.05mmol) was dissolved in 2mL of absolute ethanol, and the mixture was obtained after stirring evenly;
[0030] 2) The above mixed solution was placed in a 25mL autoclave and heated to 80°C for 2 days. After the reaction was completed, it was cooled to room temperature and filtered to obtain a pink-purple block crystal, which was the F-containing coordination polymer.
Embodiment 3
[0032] 1) Weigh cobalt nitrate hexahydrate Co(NO 3 ) 2 ·6H 2 O (43.5mg, 0.15mmol), tetrafluoroterephthalic acid (H 2 tfbdc) (11.9mg, 0.05mmol) was dissolved in 6mL of absolute ethanol, and the mixture was obtained after stirring evenly;
[0033]2) The above mixed solution was placed in a 25mL autoclave and heated to 100 degrees Celsius for 4 days. After the reaction was completed, it was cooled to room temperature and filtered to obtain a pink-purple block crystal, which was the F-containing coordination polymer.
[0034] Three, the determination of the structure of the coordination polymer containing F:
[0035] Get the crystal obtained in Example 1 of the above step 2 on a glass slide, select a suitable crystal under a microscope, test it on a Supernova type X-ray single crystal diffractometer, and use the Mo-Kα ray monochromated by a graphite monochromator is the incident radiation source, with Diffraction points were collected by scanning, and their coordinates and ...
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