Biomass-based activated carbon coated iron carbide three-dimensional porous microbial fuel cell anode material, anode and preparation methods
A technology based on activated carbon and anode materials, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of accelerated extracellular interface electron transfer, unfavorable microbial adhesion and growth, high modification cost, and achieve improved interface electron transfer rate, The effect of reducing anode electron transfer resistance and high affinity
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[0042] Example 1
[0043] In this embodiment, a method for preparing an anode material and an anode for a three-dimensional iron carbide porous microbial fuel cell coated with biomass-based activated carbon is provided. The steps are as follows:
[0044] (1) Dry the biomass raw distiller’s grains, then carbonize at 450°C for 1.5 hours and cool to room temperature to obtain a carbonized material. Add 2mL K per 1g of carbonization 2 CO 3 The ratio of the solution to the concentration of 1mol / L K 2 CO 3 Then add ferric chloride solution to make the mass ratio of iron to carbonized material 10%, and ultrasonically mix in a water bath at 40kHz for 30min, so that iron ions are fully absorbed into the pore structure of the carbonized material, and then dried at 100°C. A carbonized material mixture is obtained.
[0045] (2) Place the carbonized material mixture obtained in step (1) in a crucible with a gas circulating, in the flowing N 2 Treated at 850°C for 2h in an atmosphere. During the c...
Example Embodiment
[0047] Example 2
[0048] In this embodiment, a method for preparing an anode material and an anode for an iron carbide three-dimensional porous microbial fuel cell coated with biomass-based activated carbon is provided. The steps are as follows:
[0049] (1) Dry the biomass raw distiller’s grains, then carbonize at 550°C for 2h, and cool to room temperature to obtain a carbonized material. Add a KOH solution with a concentration of 3mol / L at the ratio of adding 3mL KOH solution to 1g of carbonized material, and then add nitric acid. The iron solution makes the mass ratio of iron to the carbonized material 2%, and ultrasonically mixes the iron in a water bath for 30 minutes under the condition of 40 kHz to fully adsorb iron ions into the pore structure of the carbonized material, and then is dried at 100° C. to obtain a carbonized material mixture.
[0050] (2) Place the carbonized material mixture obtained in step (1) in a crucible with a gas circulating, in the flowing N 2 In the a...
Example Embodiment
[0053] Example 3
[0054] In this embodiment, a method for preparing an anode material and an anode for an iron carbide three-dimensional porous microbial fuel cell coated with biomass-based activated carbon is provided. The steps are as follows:
[0055] (1) Dry the biomass raw distiller’s grains, then carbonize at 500°C for 1 hour, and cool to room temperature to obtain a carbonized material. Add KOH solution with a concentration of 2mol / L at the ratio of 5mL KOH solution per 1g of carbonized material, and then add nitric acid. The iron solution makes the mass ratio of iron and the carbonized material 5%, and ultrasonically mixes the iron ions into the pore structure of the carbonized material under the condition of 40 kHz in a water bath for 30 minutes, and then is dried at 100° C. to obtain a carbonized material mixture.
[0056] (2) Place the carbonized material mixture obtained in step (1) in a crucible with a gas circulating, in the flowing N 2 Treated at 800℃ under constant t...
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