Mesoporous carbon electrode materials were prepared directly from pyrolysis of EDTA calcium. N2 adsorption tests show that the carbons are typical mesoporous materials and the specific surface area of the carbons increases with the rise of carbonization temperature and the average pore size first increases and then decreases. Electrochemical tests demonstrate that CaC-700, CaC-800 and CaC-900 possess good capacitive behavior and they can maintain high energy density at high output power, at which their mesopore surface are utilized efficiently. It is believed that these carbons are very promising for the occasion where both high energy density and high output power are required.%以乙二胺四乙酸钙为原料,采用直接碳化法制备介孔碳电极材料.N2吸附测试表明,所制备的碳材料为典型的介孔材料,材料的比表面积随着碳化温度的升高而增加,平均孔径呈现先增加后减小的趋势.电化学测试表明,CaC-700、CaC-800和CaC-900具有优异的电化学电容特性,在较高的输出功率下仍能保持较高的能量密度,说明介孔表面在高功率输出时能够得到较充分的利用.这类介孔碳在对能量密度和功率密度都有较高要求的场合具有良好的应用前景.
展开▼
