Optimization of carbon nanotube supercapacitor electrode
Başlık çevirisi mevcut değil.
- Tez No: 403113
- Danışmanlar: PROF. W. P. KANG, PROF. JIMMY DAVIDSON
- Tez Türü: Yüksek Lisans
- Konular: Elektrik ve Elektronik Mühendisliği, Electrical and Electronics Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2011
- Dil: İngilizce
- Üniversite: Vanderbilt University
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 63
Özet
Özet yok.
Özet (Çeviri)
Carbon nanotubes (CNTs) have many potential applications due to their electrical conductivity, excellent chemical properties, mechanical strength, and high surface area. Because of their unique material properties, CNTs are promising for next generation supercapacitor applications. CNTs based electrode offers exceptional energy and power performance due to the high surface area and the ability to functionalize the CNTs to optimize electrochemical supercapacitor properties. This research is focused on the synthesis of CNTs and electrochemical characterization of CNTs based electrode to improve the performance of ultracapacitors. In brief, the H2/NH3/CH4 (75:75:25 sccm) and H2/NH3/CH4 gas mixture (75:100:25 sccm) for different growth time (2, 4, 6, 8, and 10 min) were applied to CNT synthesis using HFCVD. Growth characteristics of carbon nanotubes changed from spaghetti-like to vertical aligned when the growth condition was switched from low to high ammonia ratio. The length of carbon nanotubes changed from ~2 μm to ~50 μm when the growth time lengthened. Post synthesis treatment of CNTs including polyvinyl alcohol (PVA) treatment, H2O2 (hydrogen peroxide) treatment, H2 (hydrogen) plasma treatment, were performed and used to improve the CNTs electrodes capacitance. The encouraging results demonstrated that polyvinyl alcohol (PVA) could be used to functionalize carbon nanotubes and transform the as grown hydrophobic nanotube surfaces into desirable hydrophilic surface to enhance the capacitive performance. On the other hand, both hydrogen peroxide treatment and hydrogen plasma treatment were found not to be useful for modifying the carbon nanotubes for ultracapacitor application.
Benzer Tezler
- Karbon nanotüp katkılı DNA biyosensörü tasarımı ve metilen mavisi ile ölçüm yönteminin optimizasyonu
Design of carbon nanotube doped DNA biosensor and optimization of measurement method with methylene blue
EREN TURAN
Yüksek Lisans
Türkçe
2018
BiyoteknolojiGebze Teknik ÜniversitesiÇevre Mühendisliği Ana Bilim Dalı
PROF. DR. MELEK ÖZKAN
- Tabakalı prepreg kompozitlerde karbon nanotüp takviyesi ile mekanik özelliklerinin optimizasyonu
Optimization of mechanical properties of layered prepregated composites by carbon nanotube reinforcement
MEVLÜT KUMDERE
Yüksek Lisans
Türkçe
2020
Makine MühendisliğiNecmettin Erbakan ÜniversitesiMakine Mühendisliği Ana Bilim Dalı
DR. ÖĞR. ÜYESİ MEHMET KAYRICI
- İlaç analizlerine yönelik etkin elektrokimyasal yöntemlerin geliştirilmesi
Development of effective electrochemical methods for the pharmaceutical analysis
TUĞBA ÖREN VAROL
- Preparation of polymer carbon-nanotube based composide electrodes and application to determination of serotonin
Polimer karbon nanotüp temelli kompozit elektrotların hazırlanması ve serotonin tayinine uygulanması
ELİF KOLUAÇIK
- Enzim temelli biyosensörlerin cevabına çeşitli metal oksit nanopartiküllerin etkisinin karşılaştırılması
Comparison of the effect of various metal oxide nanoparticles to response of enzyme based biosensors
İREM OKMAN KOÇOĞLU