Muz kabuğundan katkılı karbon malzeme eldesi ve süperkapasitör uygulamaları
Yükleniyor...
Dosyalar
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
İnönü Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Günümüzde elektrik enerjisinin yüksek miktarlarda ve düşük maliyetlerle depolanabilmesi enerji depolama sistemlerinin en önemli problemlerinden biridir. Son zamanlarda daha fazla ilgi çeken enerji depolama uygulamalarından biri de süper kapasitörlerdir. Bu çalışmada süper kapasitörlerde elektrot malzemesi olarak kullanılabilecek biyokütle kaynaklı muz kabuğundan saf olarak (I), NaCl ile aktivasyon yapılarak (II), Na2SO4 ile aktivasyon yapılarak (III) ve tiyoüre (IV) ile aktivasyonu gerçekleştirilen aktif karbonların karakterizasyonu yapılmış ve elektrokimyasal özellikleri araştırılmıştır. Bu tez üç aşamadan oluşmaktadır. İlk aşamada hazırlanan muz kabuğu ve/veya muz kabuğu ve aktivatör karışımları 800 oC'de ısıl işlem uygulanarak aktivasyon edilmiş ve aktivasyon edilmemiş aktif karbonların üretimi gerçekleştirilmiştir. İkinci aşamada ise sentezlenen aktif karbonun karakterizasyonu için X-ışını kırınım analizi (XRD), Taramalı Elektron Mikroskopu (SEM), Fourier Dönüşümlü Kızılötesi Spektroskopisi (FTIR), elementel analiz, Yüzey Alanı Ölçüm Analizi (Brunauer-Emmett-Teller, BET), Enerji Dağılım X-Işını Spektrometresi (EDX) ve Raman spektroskopisi analizleri gerçekleştirilmiştir. Numunelerinin elektrokimyasal performansları, Döngüsel Voltametri (CV), Galvanostatik Şarj-Deşarj (GCD), Elektrokimyasal Empedans Spektroskopisi (EIS) ölçümleri ile analiz edilmiştir. Yapılan analizler sonucunda saf muz kabuğundan üretilen aktif karbonun BET yüzey alanının 6 m2 g-1 en düşük yüzey alanına sahip olduğu, Na2SO4 ile aktivasyonu gerçekleştirilen aktif karbonun BET yüzey alanının 1071 m2 g-1 olduğu görülmüştür. CR2032 düğme tipi batarya haznesi kullanılarak 6 M KOH elektroliti ile gerçekleştirilen elektrokimyasal analizlerde saf muz kabuğundan üretilen aktif karbonun 0,2 A g-1 akım yoğunluğunda 68,2 F g-1 ve 5 mV s-1 tarama hızında 58,7 F g-1 ile en yüksek kapasitans değeri elde edildiği, 10000 şarj-deşarj döngüsü sonunda %74 kapasite tutma oranına sahip olduğu tespit edilmiştir.
One of the most important problems of energy storage systems is the storage of electrical energy in high quantities and at low costs. One of the energy storage applications that has attracted more attention recently is supercapacitors. In this study, the synthesis, characterization and electrochemical properties as electrode materials of activated and non-activated active carbons produced from biomass sourced banana peel (I-IV), which are pure (I), activated with NaCl (II), activated with Na2SO4 (III), and activated with thiourea (IV), were investigated. This thesis consists of three stages. In the first stage, the production of activated and non-activated active carbons prepared via applying heat treatment at 800 oC to the banana peel and/or banana peel and activator mixtures. In the second stage, the characterization of the synthesized active carbons was carried out by X-ray diffraction analysis (XRD), scanning electron microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), elemental analysis, Surface Area Measurement Analysis (Brunauer-Emmett-Teller, BET), Energy Dispersion Beam Spectrometer (EDX) and Raman spectroscopy analyzes. In the third stage, the electrochemical performances of activated and non-activated active carbons prepared from banana peel used as electrode material were analyzed by Cyclic Voltammetry (CV), Galvanostatic Charge-Discharge (GCD), Electrochemical Impedance Spectroscopy (EIS) measurements. As a result of the spectrochemical structural analysis, it was seen that the BET surface area of the activated carbon compound (I) produced from pure banana peel was the lowest with 6 m2 g-1, while the BET surface area of the activated carbon compound produced from the banana peel via Na2SO4 activation was 1071 m2 g-1. In the electrochemical analyzes carried out with 6 M of KOH electrolyte using the CR2032 button-type battery chamber, and the highest capacitance value of activated carbon produced from pure banana peel was obtained with 68.2 F g-1 at a current density of 0,2 A g-1 and 58,7 F g-1 at a scanning speed of 5 mV s-1, It has been determined that it has a capacity retention rate of 74% at the end of the 10000 charge-discharge cycle.
One of the most important problems of energy storage systems is the storage of electrical energy in high quantities and at low costs. One of the energy storage applications that has attracted more attention recently is supercapacitors. In this study, the synthesis, characterization and electrochemical properties as electrode materials of activated and non-activated active carbons produced from biomass sourced banana peel (I-IV), which are pure (I), activated with NaCl (II), activated with Na2SO4 (III), and activated with thiourea (IV), were investigated. This thesis consists of three stages. In the first stage, the production of activated and non-activated active carbons prepared via applying heat treatment at 800 oC to the banana peel and/or banana peel and activator mixtures. In the second stage, the characterization of the synthesized active carbons was carried out by X-ray diffraction analysis (XRD), scanning electron microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), elemental analysis, Surface Area Measurement Analysis (Brunauer-Emmett-Teller, BET), Energy Dispersion Beam Spectrometer (EDX) and Raman spectroscopy analyzes. In the third stage, the electrochemical performances of activated and non-activated active carbons prepared from banana peel used as electrode material were analyzed by Cyclic Voltammetry (CV), Galvanostatic Charge-Discharge (GCD), Electrochemical Impedance Spectroscopy (EIS) measurements. As a result of the spectrochemical structural analysis, it was seen that the BET surface area of the activated carbon compound (I) produced from pure banana peel was the lowest with 6 m2 g-1, while the BET surface area of the activated carbon compound produced from the banana peel via Na2SO4 activation was 1071 m2 g-1. In the electrochemical analyzes carried out with 6 M of KOH electrolyte using the CR2032 button-type battery chamber, and the highest capacitance value of activated carbon produced from pure banana peel was obtained with 68.2 F g-1 at a current density of 0,2 A g-1 and 58,7 F g-1 at a scanning speed of 5 mV s-1, It has been determined that it has a capacity retention rate of 74% at the end of the 10000 charge-discharge cycle.
Açıklama
Anahtar Kelimeler
Kaynak
WoS Q Değeri
Scopus Q Değeri
Cilt
Sayı
Künye
Taşkıran, A. (2023). Muz kabuğundan katkılı karbon malzeme eldesi ve süperkapasitör uygulamaları. Yayınlanmış Yüksek Lisans Tezi. İnönü Üniversitesi, Malatya.
