CAJ | 학술논문

近年来，作为新型储能器件的超级电容器受到人们的普遍关注，而对超级电容器的研究主要集中在电极材料上。本文通过共蒸发Ag2 O和SiO粉末的方法，在泡沫Ni基底上合成微米量级Ag＠SiO2。利用SEM、EDS和XRD对样品显微结构进行了表征。通过循环伏安法以及恒流密度充放电测试了材料的电化学性能。实验结果表明：该材料作为新型的电极材料具有一定的稳定性和氧化还原可逆性；在0?05 A·g－1的充放电电流密度下比容量达到144 F·g－1；在电流密度为0?2 A·g－1时，比容量为105 F·g－1，是初始比容量的73?03％。本文结果为该材料的制备、应用开发提供参考与依据。
근년래，작위신형저능기건적초급전용기수도인문적보편관주，이대초급전용기적연구주요집중재전겁재료상。본문통과공증발Ag2 O화SiO분말적방법，재포말Ni기저상합성미미량급Ag＠SiO2。이용SEM、EDS화XRD대양품현미결구진행료표정。통과순배복안법이급항류밀도충방전측시료재료적전화학성능。실험결과표명：해재료작위신형적전겁재료구유일정적은정성화양화환원가역성；재0?05 A·g－1적충방전전류밀도하비용량체도144 F·g－1；재전류밀도위0?2 A·g－1시，비용량위105 F·g－1，시초시비용량적73?03％。본문결과위해재료적제비、응용개발제공삼고여의거。
As a new energy storage device, supercapacitor has been widely concerned in recent years. Most investigations were focused on the electrode materials because the capacitance was depend on the selection of the electrode materials. In this paper, the Ag@SiO2 micron structures were synthesized through thermal co?evaporation of Ag2 O and SiO powders on the foam Ni substrate. SEM, EDS and XRD were used to characterize the microstructure of the samples. The electrochemical performance of materials was measured by cyclic voltammetry and galvanostatic tests. The material delivered specific capacititance of 144 F·g-1 at current density of 0?05 A·g-1 and still maintained 105 F·g-1 at current density of 0?2 A·g-1 , whose specific capacity was 73?03% of the initial specific capacity. It is a kind of new electrode materials and has good performance of supercapacitor.