Cobalt-based binary metal sulfide as well as preparation method and application thereof
A binary metal and sulfide technology, applied in cobalt compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of poor cycle performance and low specific capacity, and achieve higher utilization rate, higher specific capacity, and abundant raw material sources. Effect
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Embodiment 1
[0028] A cobalt-based binary metal sulfide, the preparation method of which comprises the following steps:
[0029] (1) Take Co(NO 3 ) 2 ·6H 2 O and 2-methylimidazole were dissolved in methanol to obtain Co(NO 3 ) 2 ·6H 2 O molar concentration is the solution B of 0.16mol / L that the solution A of 0.04mol / L and 2-methylimidazole molar concentration;
[0030] (2) Add solution B in step (1) to solution A under stirring, stir evenly, let it stand at room temperature for 24 hours, then wash it with methanol for 3 times, and then vacuum dry it at 2MPa and 60°C for 12 hours to obtain zeolite Imidazolate skeleton compound ZIF-67;
[0031] (3) Add the zeolite-like imidazolate skeleton compound ZIF-67 in the step (2) to the methanol solution of copper nitrate in a stirred state, and then reflux at 50°C for 2h to obtain a mixed solution C; wherein, the copper nitrate The mass concentration of copper nitrate in the methanol solution is 2.3g / L, and the mass concentration of the zeol...
Embodiment 2
[0034] A cobalt-based binary metal sulfide, the preparation method of which comprises the following steps:
[0035] (1) Take Co(NO 3 ) 2 ·6H 2 O and 2-methylimidazole were dissolved in methanol to obtain Co(NO 3 ) 2 ·6H 2 O mass concentration is the solution B that the solution A of 0.04mol / L and the 2-methylimidazole molar concentration are 0.16mol / L;
[0036] (2) Add solution B in step (1) to solution A under stirring, stir evenly, let stand at room temperature for 30 hours, then centrifuge wash with methanol for 3 times, then vacuum dry at 1MPa and 60°C for 12 hours to obtain zeolite Imidazolate skeleton compound ZIF-67;
[0037] (3) Add the zeolite imidazolate skeleton compound ZIF-67 in the step (2) to the methanol solution of copper nitrate under stirring, and then reflux at 90° C. for 4 hours to obtain a mixed solution C; wherein, the copper nitrate The mass concentration of copper nitrate in the methanol solution is 2.5g / L, and the mass concentration of the zeol...
Embodiment 3
[0040] A cobalt-based binary metal sulfide, the preparation method of which comprises the following steps:
[0041] (1) Take Co(NO 3 ) 2 ·6H 2 O and 2-methylimidazole were dissolved in methanol to obtain Co(NO 3 ) 2 ·6H 2 O mass concentration is the solution B that the solution A of 0.04mol / L and the 2-methylimidazole molar concentration are 0.16mol / L;
[0042] (2) Add solution B in step (1) to solution A under stirring, stir evenly, let stand at room temperature for 24 hours, then centrifuge wash with methanol for 3 times, then vacuum dry at 3MPa, 60°C for 12 hours to obtain zeolite Imidazolate skeleton compound ZIF-67;
[0043](3) Add the zeolite imidazolate skeleton compound ZIF-67 in the step (2) into the methanol solution of copper nitrate under stirring, and then reflux at 65° C. for 2 hours to obtain a mixed solution C; wherein, the copper nitrate The mass concentration of copper nitrate in the methanol solution is 2.4g / L, and the mass concentration of the zeolit...
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