Method for preparing air cathode of microbial fuel cell by using petroleum cokes
An air cathode and fuel cell technology, applied in the direction of biochemical fuel cells, battery electrodes, electrical components, etc., can solve the problem of high price of activated carbon, achieve the effects of reducing production costs, realizing resource utilization, and realizing full utilization
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[0032] The preparation method of the petroleum coke activator air cathode in the present invention includes the following steps:
[0033] Activation of petroleum coke
[0034] Put the petroleum coke solid into a ball mill and grind to a particle size of less than 200 microns as the raw material for the next activation. Mix a certain amount of petroleum coke powder and KOH according to a weight ratio of 4:1, and place in a mortar to continue grinding, so that the two can be evenly mixed. The mixed powder is placed in a porcelain boat, placed in a tube furnace, and activated under the protection of nitrogen.
[0035] The activation process includes preliminary activation and final activation. The initial activation is to increase the temperature of the tube furnace to 300 degrees Celsius at a heating rate of 3°C / min and keep it for one hour. The final activation is based on the preliminary activation, raising the temperature of the tube furnace to 800°C at a heati...
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