活性泡沫炭基超级电容器的制备

Using the orthogonal design to make loose medium component into activated carbon foams by two-step powdery method. The effects of carbonization temperature, activation time, KOH/carbon mass ratio and activation temperature on specific surface area and pore volume of activated carbon foam was investigated in order to reach the optimal synthesis condition. The electrochemical performance of supercapacitor based on activated carbon foam was analyzed. The results show that: the influence of carbonization temperature, KOH/carbon mass ratio, activation time and activation temperature on specific surface area and pore volume of activated carbon foam weakened successively. The optimal synthesis condition is: carbonization temperature 650 C, activation temperature 750 C, activation time 1h and KOH/carbon mass ratio 6:1. The specific surface area and pore volume of activated carbon foam made at the optimal synthesis condition could up to 1510 m2 g-1 and 0.8384 cm3 g-1. Pore size distribution was concentrated on 0.95~1nm and there were little mesopores and macropores. The specific capacitance of supercapacitor made at the optimal synthesis condition reached 151.5 F g-1 at 0.05A g-1 which proved activated carbon foam was suitable to be used as electrode materials of supercapacitors.