Method for preparing electrode carbon material for sodium ion battery using bamboo
A technology of sodium-ion batteries and carbon materials, which is applied in battery electrodes, secondary batteries, chemical instruments and methods, etc., can solve the problems of slow progress and great challenges of anode materials for sodium-ion batteries, and achieve enhanced battery cycle performance and low cost , the effect of increasing the specific surface area
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Embodiment 1
[0030] A kind of method utilizing bamboo to prepare electrode carbon material of sodium ion battery, comprises the following steps:
[0031] Step 1. Take the bamboo and wash it with ethanol and deionized water respectively, and place it in a blast drying oven for 24 hours at 60° C. to obtain the dried bamboo;
[0032] Step 2, place the dried bamboo in a porcelain boat, use a high-temperature tube furnace to heat up to 800°C at a rate of 30°C / min under the protection of an inert atmosphere, and then heat-preserve and carbonize for 4 hours; obtain bamboo-derived carbon;
[0033] Step 3. After the carbonized bamboo-derived carbon is ground into powder, sieve it with a 100-mesh sieve to obtain a uniform particle-derived carbon powder, and prepare a KOH solution according to the weight ratio of KOH to deionized water at 1:1. , adding bamboo-derived carbon powder into KOH solution and soaking for 24 hours, drying in a vacuum oven at 80°C for 12 hours to obtain alkali-treated bamboo-...
Embodiment 2
[0037] A kind of method utilizing moso bamboo to prepare electrode carbon material of sodium ion battery, comprises the following steps:
[0038] Step 1. After washing the moso bamboo with ethanol and deionized water respectively, place it in a blast drying oven for 24 hours at 60° C. to obtain the dried moso bamboo;
[0039] Step 2, place the dried moso bamboo in a porcelain boat, use a high-temperature tube furnace under the protection of an inert atmosphere to raise the temperature to 750°C at a rate of 15°C / min, and then heat-preserve and carbonize for 2 hours; obtain moso bamboo-derived carbon;
[0040] Step 3, after the carbonized moso bamboo derived carbon is ground into powder, sieve it with a 100-mesh sieve to obtain a moso bamboo derived carbon powder with uniform particles, prepare a KOH solution according to the weight ratio of KOH to deionized water at 1:1, and Moso bamboo-derived carbon powder was soaked in KOH solution for 24 hours, then dried in a vacuum oven a...
Embodiment 3
[0044] A kind of method utilizing Sichuan square bamboo to prepare electrode carbon material of sodium ion battery, comprises the following steps:
[0045] Step 1. Take Sichuan square bamboo and wash them with ethanol and deionized water respectively, and place them in a blast drying oven for 24 hours at 60°C to obtain dried Sichuan square bamboo;
[0046] Step 2: Place the dried Sichuan square bamboo in a porcelain boat, use a high-temperature tube furnace under the protection of an inert atmosphere to raise the temperature to 850 °C at a rate of 20 °C / min, and then keep it warm for 3 hours to obtain carbon derived from Sichuan square bamboo ;
[0047] Step 3: Grind the carbonized Sichuan bamboo-derived carbon into powder, and then sieve it with a 100-mesh sieve to obtain Sichuan bamboo-derived carbon powder with uniform particles, which is prepared according to the weight ratio of KOH and deionized water at 1:1 KOH solution, adding the Sichuan square bamboo derived carbon p...
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