Preparation method of activated carbon for multi-element co-doped lead-carbon batteries
A lead-carbon battery and activated carbon technology, applied in secondary batteries, battery electrodes, non-metallic elements, etc., can solve the problem of water loss in lead-carbon batteries, which has not been effectively solved, weaken the influence mechanism of modifiers, and reduce the hydrogen evolution point of electrodes. and other problems, to achieve the effects of excellent electron transport performance, favorable absorption and diffusion, and improvement of hydrogen evolution potential
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Embodiment 1
[0029] The preparation method of multi-element co-doped lead-carbon battery activated carbon of the present invention, the detailed steps of this preparation method are as follows:
[0030] a. Preparation of nitrogen-enriched activated carbon: first, dry the purchased nitrogen-enriched biomass. After drying, the moisture content of the nitrogen-enriched biomass is ≤0.1%; The mass ratio is mixed, and after mixing evenly, add water to completely submerge the mixed substance. The mass volume ratio between the dried nitrogen-enriched biomass and water is 1g: 4mL. After adding water, let it stand for 1 hour; The biomass completely adsorbs the activator KOH solution, and then puts it in a nickel kettle with nitrogen gas, heats up to 800°C (the heating rate is controlled at 5-10°C / min), and heats it for 1 hour at this temperature; Cool to room temperature, then use dilute hydrochloric acid (the concentration of dilute hydrochloric acid is 15%) to remove the activator KOH in the obtai...
Embodiment 2
[0037] The preparation method of multi-element co-doped lead-carbon battery activated carbon of the present invention, the detailed steps of this preparation method are as follows:
[0038] a. Preparation of nitrogen-enriched activated carbon: first, dry the purchased nitrogen-enriched biomass. After drying, the moisture content of the nitrogen-enriched biomass is ≤0.1%; The mass ratio is mixed, and after mixing evenly, add water to completely submerge the mixed substance. The mass volume ratio between the dried nitrogen-enriched biomass and water is 1g: 3mL. After adding water, let it stand for 2 hours; The biomass completely adsorbs the activator NaOH solution, and then puts it in a nickel kettle with nitrogen gas, heats up to 700°C (the heating rate is controlled at 5-10°C / min), and heats it for 2 hours at this temperature; Cool to room temperature, then use dilute hydrochloric acid (the concentration of dilute hydrochloric acid is 18%) to remove the activator NaOH in the o...
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