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Ni Nanopartikül-Dekore Esnek Grafen Kağıt Elektrotların Süperkapasitif Performansının Değerlendirilmesi

Evaluation of Supercapacitive Performance of Ni Nanoparticle-Decorated Flexible Graphene Paper Electrodes

Miraç Şen(ATATURK UNIVERSITY)0009-0006-6459-0443
Emir Çepni(ATATURK UNIVERSITY)0000-0001-8738-1157
Elif Erçarıkcı(ATATURK UNIVERSITY)0000-0002-8490-1644
Sayfa
727–734
Yayın Tarihi
2026-06-03
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Esnek, serbest duran elektrotun mükemmel süperkapasitif performansı, GP’ın esnek yapısına ve grafen ile NiNPs arasındaki sinerjik etkileşime atfedilebilir.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:Süperkapasitörler (SC), özellikle çalışma mekanizmalarının çevre dostu elektrokimyasal yöntemlere dayanması nedeniyle son yıllarda en çok araştırılan enerji depolama uygulamalarından biridir.
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Temel Bulgular & Veri:NiNPs/GP elektrotun spesifik kapasitans (Cs) değeri 1,0 A/g akım yoğunluğunda 414 F/g olarak belirlenmiştir.
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Sonuç & Katkı:Esnek, serbest duran elektrotun mükemmel süperkapasitif performansı, GP’ın esnek yapısına ve grafen ile NiNPs arasındaki sinerjik etkileşime atfedilebilir.
🔬Tür:Araştırma Makalesi
📍Kapsam:2000 Verileri
⚙️Değişkenler:Grafen kağıt · Esnek elektrot · Nikel nanopartiküller

Özet

Süperkapasitörler (SC), özellikle çalışma mekanizmalarının çevre dostu elektrokimyasal yöntemlere dayanması nedeniyle son yıllarda en çok araştırılan enerji depolama uygulamalarından biridir. Bu çalışmada, esnek SCs elektrot geliştirmeye yönelik nikel nanopartiküller (NiNPs) ile dekore edilmiş grafen kağıtlar (GP) esnek elektrot olarak üretilmiş ve bu elektrotların (NiNPs/GP) SCs performansları ortaya konulmuştur. Bu amaçla uygulaması pratik kalıp döküm yöntemi ile hazırlanan GP, elektrokimyasal yöntemle NiNP'lerle dekore edilmiştir. Böylece pratik bir şekilde NiNPs/GP esnek elektrotları elde edilmiştir. Elde edilen elektrotların morfolojik ve yapısal karakterizasyonu, taramalı elektron mikroskobu, X-ışını fotoelektron spektroskopisi ve X-ışını kırınımı teknikleri kullanılarak gerçekleştirilmiştir. Hazırlanan esnek ve serbest duran NiNPs/GP elektrotların süperkapasitif performansları dönüşümlü voltametri ve galvanostatik şarj/deşarj yöntemleri ile araştırılmıştır. NiNPs/GP elektrotun spesifik kapasitans (Cs) değeri 1,0 A/g akım yoğunluğunda 414 F/g olarak belirlenmiştir. Ayrıca, NiNPs/GP elektrotun esneklik ve dönüşüm stabilitesi gibi uzun süreli kullanım çalışmaları da gerçekleştirilmiştir. Bu çalışmalar sonucunda esnek ve serbest duran elektrotun 500 kez eğip-bükme sonucunda ve 2000 şarj/deşarj döngüsü sonucunda Cs değerlerinde sırasıyla yalnızca %19,7 ve %16,1 azalma olduğu belirlenmiştir. Esnek, serbest duran elektrotun mükemmel süperkapasitif performansı, GP’ın esnek yapısına ve grafen ile NiNPs arasındaki sinerjik etkileşime atfedilebilir.

Abstract

Supercapacitors (SCs) are one of the most extensively investigated energy storage applications in recent years, especially since their working mechanism is based on eco-friendly electrochemical methods. In this study, graphene papers (GP) decorated with nickel nanoparticles (NiNPs) for the development of flexible SCs electrodes were developed as flexible electrodes and the SCs performance of this electrodes (NiNPs/GP) were evaluated. For this purpose, the GP, fabricated with the practical mold-casting method, was decorated with NiNPs via electrochemical method. Thus, the NiNPs/GP flexible electrodes were obtained with a practical approach. The morphological and structural characterization of the obtained electrodes were carried out using scanning electron microscope, X-ray photoelectron spectrometer, and X-ray diffraction techniques. The supercapacitive performances of the prepared flexible and free-standing NiNPs/GP electrodes were investigated with cyclic voltammetry and galvanostatic charge/discharge methods. The specific capacitance (Cs) value of the NiNPs/GP electrode was measured to be 414 F/g at a current density of 1.0 A/g. Furthermore, the long-term usage studies such as flexibility and cycle stabilities of the NiNPs/GP electrode were also performed. As a result of these studies, it was determined that the Cs value of flexible and free-standing electrode decreased by only 19.7% and 16.1% after 500 bending cycles and 2000 charge/discharge cycles, respectively. The excellent supercapacitive performance of the flexible, free-standing electrode could be attributed to the flexibility of the graphene paper structure and the synergistic interaction between the graphene and the NiNPs.

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Bu Makaleye Atıf Yap

Şen, M., Çepni, E., Erçarıkcı, E. (2026). Ni Nanopartikül-Dekore Esnek Grafen Kağıt Elektrotların Süperkapasitif Performansının Değerlendirilmesi. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 26 Sayı: 3, 727–734. https://doi.org/10.35414/akufemubid.1744934

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