Molibden Oksit-Oktadesilamin/Pluronic®F127 Kompozit Elektrotların Kapasitif Özelliklerinin İncelenmesi

Geçiş metal oksitleri (GMO), katalitik aktiviteleri ve yarı iletkenlik özellikleri ile ilgi görmektedirler. Süperkapasitör elektrotlar için de spesifik kapasitansı ve enerji yoğunluğunu artırmak amacıyla GMO’lar alternatif malzemeler olarak kullanılmaktadır. Bu çalışmada, molibden trioksit-oktadesilamin (MoO3-ODA) ve molibden trioksit- EOnPOmEOn- tipi blok-kopolimer kompozitlerinin ITO cam altlık üzerine döndürerek kaplama (Spin Coating, SC) yöntemiyle ince filmleri hazırlanmıştır. Hazırlanan bu ince filmlerle MoO3-ODA/ITO ve MoO3-Pluronic®F127/ITO elektrotlar üretilmiş ve bu elektrotların elektrokimyasal özellikleri araştırılmıştır. Elde edilen bulgular ODA ve Pluronic®F127 (EO106PO70EO106)’nin varlığında elektriksel iletkenliğin arttığını, ayrıca Pluronic®F127 ile hazırlanan molibden trioksit kompozit yapıların daha iyi elektrokimyasal enerji depolama kapasitesine sahip olduğunu göstermiştir. Elektrokimyasal çalışmalarımız ve elde edilen bu sonuçlar, Pluronic®F127 katkılı MoO3 kompozit yapılarının yeni nesil yüksek performanslı süperkapasitörlerin üretilmesinde umut verici bir yaklaşım olduğunu göstermektedir.

Anahtar Kelimeler:

İnce film, Spin Coating, Süperkapasitör, Döngüsel voltametri, Çevrim ömrü

Investigation of the Capacitive Properties of Molybdenum Oxide-Octadecylamine / Pluronic®F127 Composite Electrodes

Transition metal oxides (TMOs) are of great interest for their catalytic stability and semi-conductive properties. For supercapacitor electrodes, TMOs are used to alternative materials due to the enhancement of energy density and specific capacitance. In this study, molybdenum trioxide- octadecylamine (MoO3-ODA) and molybdenum trioxide- EOnPOmEOn-type block-copolymer composite thin films on ITO were prepared by Spin Coating method. MoO3-ODA/ITO and MoO3-Pluronic®F127/ITO electrodes were fabricated with above mentioned thin films and their electrochemical properties were investigated. Our results demonstrated that electrical conductivity increased in the presence of ODA and Pluronic®F127 (EO106PO70EO106). Furthermore, molybdenum trioxide composite structure prepared with Pluronic®F127 shown better electrochemical energy storage capacity. Our electrochemical studies and results show that MoO3 composite structures with Pluronic®F127 can be a promising approach to fabricate new generation high-performance supercapacitors.

Keywords:

Spin Coating, Thin film, Supercapacitor, Cyclic voltammetry, Cycle life,

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