A kind of preparation method of 3dpc/co/coo lithium battery negative electrode material
A technology of negative electrode material and composite material, applied in the field of preparation of 3DPC/Co/CoO lithium battery negative electrode material, can solve the problems of poor cycle performance, low conductivity, unstable structure, etc. The effect of structural collapse
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specific Embodiment approach 1
[0047] Embodiment 1: A method for preparing a 3DPC / Co / CoO lithium battery negative electrode material according to this embodiment is carried out according to the following steps:
[0048] 1. Synthesis of 3D porous carbon 3DPC
[0049] In a tube furnace, feed argon gas to carbonize edible rice flakes, the carbonization temperature is 850-950°C, and the heating rate is 8-12°C / min, to obtain three-dimensional porous carbon 3DPC;
[0050] 2. Synthesis of 3DPC / Co-MOFs precursor materials
[0051] Co(NO 3 ) 2 ·6H 2 O was dissolved in methanol solution and stirred for 10 min to obtain Co(NO 3 ) 2 ·6H 2 O methanol solution; Dimethylimidazole was dissolved in methanol solution and stirred for 10min to obtain dimethylimidazole methanol solution; Co(NO 3 ) 2 ·6H 2 O methanol solution and dimethylimidazole methanol solution were mixed and stirred at a constant rate for 10 min to obtain a mixed solution; the mixed solution and three-dimensional porous carbon 3DPC were added to a ...
specific Embodiment approach 2
[0054] Specific embodiment two: the difference between this embodiment and specific embodiment one is: Co(NO 3 ) 2 ·6H 2 Co(NO 3 ) 2 ·6H 2 The molar ratio of O to 2-MeIM in 2-MeIM methanol solution is 1:20-1:43. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0055] Specific embodiment three: the difference between this embodiment and specific embodiment one is: Co(NO 3 ) 2 ·6H 2 Co(NO 3 ) 2 ·6H 2 The molar ratio of O to 2-MeIM in 2-MeIM methanol solution is 1:30 to 1:40. Others are the same as in the first embodiment.
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