Preparation method and application of bamboo-based porous carbon@graphite
A technology of porous carbon and porous carbon materials, applied in the field of battery materials and chemical power sources, can solve the problems of low capacity, poor compatibility of PC electrolyte, unsatisfactory rate performance, etc., and achieve simple and safe preparation process, good cycle life and rate performance effect
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Embodiment 1
[0017] 1. Preparation of bamboo-based porous carbon
[0018] Wash and crush the moso bamboo, pass it through a 60-mesh sieve, soak and activate it in 50% zinc chloride solution at 80°C for 48 hours, then carry out suction filtration, transfer it to a microwave oven and carbonize it with microwave power 480W for 10 minutes; in 20% hydrochloric acid solution Soak in water for 24 hours, after suction filtration, wash with deionized water until the pH value is between 6-7, then soak in 30% potassium hydroxide solution for 24 hours, rinse repeatedly with deionized water until the pH value is between 7-8 , suction filtration; dried at 80°C for 12 hours, then ground, and passed through a 400-mesh sieve to obtain bamboo-based porous carbon.
[0019] 2. Preparation of bamboo-based porous carbon@graphite
[0020] The ratio of the bamboo-based porous carbon prepared in step 1 and the graphite material 1:7.5 is accurately weighed and put into an agate ball mill jar, with dehydrated alcoh...
Embodiment 2
[0022] 1. Preparation of bamboo-based porous carbon
[0023] Wash and crush the moso bamboo, pass it through a 60-mesh sieve, soak and activate it in 50% zinc chloride solution at 80°C for 48 hours, filter it with suction, transfer it to a microwave oven and carbonize it with a microwave power of 320W for 5 minutes; in 20% hydrochloric acid solution Soak in water for 24 hours, after suction filtration, wash with deionized water until the pH value is between 6-7, then soak in 30% potassium hydroxide solution for 24 hours, rinse repeatedly with deionized water until the pH value is between 7-8 , suction filtration; dried at 80°C for 12 hours, then ground, and passed through a 400-mesh sieve to obtain bamboo-based porous carbon.
[0024] 2. Preparation of bamboo-based porous carbon@graphite
[0025] The bamboo-based porous carbon prepared in step 1 and the ratio of graphite material 1:10 are accurately weighed and put into an agate ball mill jar, with dehydrated alcohol as a dis...
Embodiment 3
[0027] 1. Preparation of bamboo-based porous carbon
[0028] Wash and crush the moso bamboo, pass it through a 60-mesh sieve, soak and activate it in 50% zinc chloride solution at 80°C for 48 hours, then carry out suction filtration, transfer to a microwave oven and carbonize it with microwave power 320W for 20 minutes; in 20% hydrochloric acid solution Soak in water for 24 hours, after suction filtration, wash with deionized water until the pH value is between 6-7, then soak in 30% potassium hydroxide solution for 24 hours, rinse repeatedly with deionized water until the pH value is between 7-8 , suction filtration; dried at 80°C for 12 hours, then ground, and passed through a 400-mesh sieve to obtain bamboo-based porous carbon.
[0029] 2. Preparation of bamboo-based porous carbon@graphite
[0030] The bamboo-based porous carbon prepared in step 1 and the ratio of graphite material 1:10 are accurately weighed and put into an agate ball mill jar, with dehydrated alcohol as a...
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