CAJ | 학술논문

以活性炭和苯胺为原料,原位聚合法制备了聚苯胺/活性炭复合材料(PANI/AC).采用交流阻抗测试分析比较了PANI/AC复合材料和活性炭两电极体系电容器在6 mol/L KOH电解液中的电容性能.利用交流阻抗谱图计算电容器的比容量,PANI/AC低频区比容量为401.47 F/g,比AC比容量194.64 F/g提高了2.06倍.100 kHz～0.01 Hz频率范围内两类电容器的阻抗谱图均出现倾角为45°的直线段,其相位角均小于理想电容器的90°,分别为68.14°和80.55°,由于不同电压下PANI氧化态的转变,PANI/AC电极电荷转移阻抗随开路电压增大逐渐减小.
이활성탄화분알위원료,원위취합법제비료취분알/활성탄복합재료(PANI/AC).채용교류조항측시분석비교료PANI/AC복합재료화활성탄량전겁체계전용기재6 mol/L KOH전해액중적전용성능.이용교류조항보도계산전용기적비용량,PANI/AC저빈구비용량위401.47 F/g,비AC비용량194.64 F/g제고료2.06배.100 kHz～0.01 Hz빈솔범위내량류전용기적조항보도균출현경각위45°적직선단,기상위각균소우이상전용기적90°,분별위68.14°화80.55°,유우불동전압하PANI양화태적전변,PANI/AC전겁전하전이조항수개로전압증대축점감소.
PANI/AC composite material was synthesized by in-situ polymerization method using aniline and activated carbon as raw materials. Electrochemical impendence was used to measure the electrochemical performance of PANI/AC and AC materials in electrolyte of 6 mol/L KOH aqueous solution. In two-electrode capacitor, the capacitance was estimated from impendence spectroscopy, the PANI/AC exhibits high specific capacitance of 401.47 F/g, which is 2.06 times larger than that of the AC'S specific capacitance of 194.64 F/g. In the frequency range of 100 kHz to 0.01 Hz, there is a 45° line in impendence spectroscopy and the phase angle of capacitors with both kinds of electrodes are smaller than 90°,which are 68.14° and 80.55° .The existence of different oxidation states for PANI make the impendence to decrease with increasing the voltage.