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Bu çalışmada, gümüş nanopartiküller (Ag NPs) ile dekore edilmiş kalay (IV) oksit (SnO2)/indirgenmiş grafen oksit (rGO) esnek kağıt elektrot üretilmiş ve bu malzemenin (Ag NPs-SnO2/rGO) süperkapasitör (SK) performansı araştırılmıştır. Bu amaçla basit hidrotermal yöntemle sentezlenen SnO2 ve GO karıştırılmış ve hazırlanan bu dispersiyon vakumla filtre edilerek SnO2/rGO esnek kağıt elektrot elde edilmiştir. Daha sonra, SnO2/rGO esnek kağıt elektrot yüzeyinde Ag NPs’nin elektrokimyasal depozisyonuyla Ag NPs-SnO2/rGO esnek kağıt elektrot üretilmiştir. Elde edilen malzemelerin karakterizasyonu, taramalı elektron mikroskobu, enerji dağılımlı X-ışını spektroskopisi ve X-ışını kırınımı teknikleri kullanılarak gerçekleştirilmiştir. Hazırlanan esnek ve serbest duran Ag NPs-SnO2/rGO kağıt elektrotun SK performansı araştırılmıştır. Bu esnek kağıt elektrotun spesifik kapasitans değeri 0,5 A g-1'de 280 F g-1 olarak belirlenmiştir. Ayrıca, esnek SK uygulamalarında Ag NPs-SnO2/rGO kağıt elektrotların kullanımı araştırılmıştır. Ag NPs-SnO2/rGO kağıt elektrotun 180° içe doğru 200 kez katlanması sonucunda başlangıç spesifik kapasitans değerinde sadece %28'lik bir azalma olduğu gözlenmiştir.
In this study, flexible paper electrots (rGO) were produced and the performance of this material (Ag NPs-SnO2/rGO) supercapacitor (SK) was studied, decorated with silver nanoparticles (Ag NPs). For this purpose, the SnO2 and GO, synthesized by a simple hydrothermal method, are mixed and prepared with this dispersion vacuum and the SnO2/rGO flexible paper electrots are obtained. Later, the flexible paper electrots of Ag NPs-SnO2/rGO were produced with the electrochemical storage of Ag NPs on the flexible paper electrots surface. Characterization of the materials obtained was carried out using scanned electron microscope, energy-distributed X-ray spectroscopy and X-ray breakthrough techniques. The prepared flexible and freely standing Ag NPs-SnO2/rGO paper electrots’ SK performance has been studied. The specific capacity value of this flexible paper electrode is determined at 0.5 A g-1 at 280 F g-1. In addition, the use of Ag NPs-SnO2/rGO paper electrots in flexible SK applications has been studied. As the Ag NPs-SnO2/rGO paper electrots slated 180° to 200 times, the starting specific capacity value was only 28% reduced.
In this study, tin (IV) oxide (SnO2)/reduced graphene oxide (rGO) flexible paper electrode decorated with silver nanoparticles (Ag NPs) was produced, and supercapacitor (SC) performance of this material (Ag NPs-SnO2/rGO) was investigated. For this purpose, SnO2 synthesized by a simple hydrothermal method and GO were mixed and this prepared dispersion was vacuum filtered to obtain SnO2/rGO flexible paper electrode. Then, Ag NPs-SnO2/rGO flexible paper electrode was produced through electrochemical deposition of Ag NPs on the SnO2/rGO flexible paper electrode surface. Characterization of the obtained material was performed using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction techniques. The SC performance of the prepared flexible and free-standing Ag NPs-SnO2/rGO paper electrode was investigated. The specific capacitance value of this flexible paper electrode was determined as 280 F g-1 at 0.5 A g-1. Additionally, the use of Ag NPs-SnO2/rGO paper electrodes in flexible SC applications was studied. It was observed that there was only a 28% decrease in the initial specific capacitance value as a result of folding Ag NPs-SnO2/rGO paper electrode at 180° inward 200 times.
Alan : Fen Bilimleri ve Matematik; Mühendislik
Dergi Türü : Uluslararası
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