CAJ | 학술논문

对集流体铝箔分别进行电化学刻蚀和化学刻蚀，研究刻蚀时间对铝箔比表面积和表观形貌的影响，以及对用其组装的超级电容器的比电容与等效串联电阻的影响；并通过交流阻抗、循环伏安等性能比较2种刻蚀方法最佳刻蚀时间下铝箔制备的超级电容器的性能。结果表明，电化学刻蚀与化学刻蚀的最佳刻蚀时间分别为60 s和80 s，所组装超级电容器的比电容分别为154.4和165.2 F/g，等效串联电阻分别为1.8Ω和1.4Ω；化学刻蚀制备的铝箔具有较好的表面腐蚀状态，所组装的超级电容器具有较小的等效串联电阻与较大的比电容；2种刻蚀方法刻蚀的铝箔制备的超级电容器经2000次循环后比电容衰减均不超过0.7%，循环性都很好。
대집류체려박분별진행전화학각식화화학각식，연구각식시간대려박비표면적화표관형모적영향，이급대용기조장적초급전용기적비전용여등효천련전조적영향；병통과교류조항、순배복안등성능비교2충각식방법최가각식시간하려박제비적초급전용기적성능。결과표명，전화학각식여화학각식적최가각식시간분별위60 s화80 s，소조장초급전용기적비전용분별위154.4화165.2 F/g，등효천련전조분별위1.8Ω화1.4Ω；화학각식제비적려박구유교호적표면부식상태，소조장적초급전용기구유교소적등효천련전조여교대적비전용；2충각식방법각식적려박제비적초급전용기경2000차순배후비전용쇠감균불초과0.7%，순배성도흔호。
The aluminum foil collectors were respectively etched by electrochemical and chemical method. The effect of etching time on specific surface area and apparent morphology of aluminum foil was studied, and the effect of the current collector made with aluminum foil for different etching time on supercapacitor’s specific capacitance and equivalent series resistance was also researched. Performance of supercapacitor made by aluminum foil etched by two etching methods under the optimal etching time were studied and compared by AC impedance, cyclic voltammetry and so on. The results show that the optimal etching time of electrochemical etching and chemical etching are 60 and 80 s respectively, the specific capacitance of supercapacitor prepared under the optimal etching time are 154.4 and 165.2 F/g, and the equivalent series resistance are 1.8 and 1.4 Ω. Aluminum foil etched by chemical method can obtain better surface corrosion condition, and the supercapacitor prepared with aluminum foil etched by chemical method can get smaller equivalent series resistance and bigger specific capacitance. The attenuation of specific capacitance of supercapacitor prepared by aluminum foil etched by two etching methods are all less than 0.7% after 2 000 cycles operation and the cycle performances are all very good.