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Browsing by Author "Toçoğlu, Ubeyd"

Browsing by Author "Toçoğlu, Ubeyd"

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  • AIP Conference Proceedings 
    Toçoğlu, Ubeyd; Cevher, Özgür; Akbulut, Hatem; Ay Oral; Zbb Oral; Me Akoz; M Sezer; Kol, Suat (AMER INST PHYSICS, 2016)
    In this study tin-multi walled carbon nanotube (Sn-MWCNT) lithium ion battery anodes were produced and their electrochemical galvanostatic charge/discharge tests were conducted at various (25 degrees C, 35 degrees C, 50 ...
  • AIP Conference Proceedings 
    Toçoğlu, Ubeyd; Cevher, Özgür; Akbulut, Hatem; Ay Oral; Zbb Oral; Me Akoz; M Sezer; Kol, Suat (AMER INST PHYSICS, 2016)
    In this study tin-multi walled carbon nanotube (Sn-MWCNT) lithium ion battery anodes were produced and their electrochemical galvanostatic charge/discharge tests were conducted at various (25 degrees C, 35 degrees C, 50 ...
  • AIP Conference Proceedings 
    Aynur Kilicarslan; Ece Bal; Mustafa Dinc; Bahadir Salmankurt; Duman, Sıtkı; B Akkus; Y Oktem; Ls Yalcin; Rbc Mutlu; Gs Dogan (AMER INST PHYSICS, 2016)
    We have employed the ab initio pseudopotential method, within a generalized gradient approximation of the density functional theory, a linear response approach, to determine atomic, elastic and lattice dynamical properties ...
  • AIP Conference Proceedings 
    Toçoğlu, Ubeyd; Cevher, Özgür; Akbulut, Hatem; Ay Oral; Zbb Oral; Me Akoz; M Sezer; Kol, Suat (AMER INST PHYSICS, 2016)
    In this study tin-multi walled carbon nanotube (Sn-MWCNT) lithium ion battery anodes were produced and their electrochemical galvanostatic charge/discharge tests were conducted at various (25 degrees C, 35 degrees C, 50 ...
  • AIP Conference Proceedings 
    Toçoğlu, Ubeyd; Cevher, Özgür; Akbulut, Hatem; Ay Oral; Zbb Oral; Me Akoz; M Sezer; Kol, Suat (AMER INST PHYSICS, 2016)
    In this study tin-multi walled carbon nanotube (Sn-MWCNT) lithium ion battery anodes were produced and their electrochemical galvanostatic charge/discharge tests were conducted at various (25 degrees C, 35 degrees C, 50 ...
  • Cyclic Performance Tests of Si/MWCNT Composite Lithium Ion Battery Anodes at Different Temperatures 
    Toçoğlu, Ubeyd; Cevher, Özgür; Akbulut, Hatem (POLISH ACAD SCIENCES INST PHYSICS, 2015)
    In this study silicon-multi walled carbon nanotube (Si-MWCNT) lithium ion battery anodes were produced and their electrochemical galvanostatic charge/discharge tests were conducted at various (25 degrees C, 35 degrees C, ...
  • Electrochemical characterization of silicon/graphene/MWCNT hybrid lithium-ion battery anodes produced via RF magnetron sputtering 
    Toçoğlu, Ubeyd; Hatipoğlu, Gizem; Alaf, M; Kayış, Fuat; Akbulut, Hatem (ELSEVIER SCIENCE BV, 2016)
    In this study it was aimed to enhance cycling performance of silicon lithium ion battery anodes via producing flexible Silicon/Graphene/MWCNT composite structures. The volumetric expansions, which are the primary obstacle ...
  • Graphene supported heterogeneous catalysts for Li-O-2 batteries 
    M. Alaf; Toçoğlu, Ubeyd; Kartal, Muhammet; Akbulut, Hatem (ELSEVIER SCIENCE BV, 2016)
    In this study production and characterization of free-standing and flexible (i) graphene, (ii) alpha-MnO2/graphene, (iii) Pt/graphene (iv) alpha-MnO2/Pt/graphene composite cathodes for Li-air batteries were reported. ...
  • Nanostructured ATO Anodes Produced by RF Magnetron Sputtering for Li-Ion Batteries 
    Cevher, Özgür; Toçoğlu, Ubeyd; Akbulut, Hatem (POLISH ACAD SCIENCES INST PHYSICS, 2015)
    In this study, the reversible capacities, as well as the cycling behavior, of crystalline antimony-doped tin oxide (ATO) films have been investigated. ATO films were deposited on Cr-coated stainless steel substrates by the ...
  • PVD yöntemi ile silisyum matrisli karbon nanotüp takviyeli nano kompozit elektrotların geliştirilmesi 
    Toçoğlu, Ubeyd (Sakarya Üniversitesi, 2012)
    Anahtar kelimeler: PVD, silisyum, karbon nano tüp, nano kompozit anode, lityum-iyon pil.Taşınabilir elektronik cihazların yaygınlaşması ve elektrikli araçların kullanımının, dünyadaki karbon dioksit salınımının azaltılması ...
  • Sn/SnO2/Mwcnt composite anode and electrochemical impedance spectroscopy studies for Li-ion batteries 
    Alaf, M; Toçoğlu, Ubeyd; Kayış, Fuat; Akbulut, Hatem (TAYLOR & FRANCIS INC, 2016)
    Tin/tinoxide/multi-walled carbon nanotube (Sn/SnO2/MWCNT) core-shell structure nanocomposite anode is produced by thermal evaporation and subsequent plasma oxidation with using MWCNT buckypaper. Metallic tin is evaporated ...
  • Structural and electrochemical characterization of tin based graphene composite anode for li-ion batteries 
    Mirac Alaf; Hatipoğlu, Gizem; Toçoğlu, Ubeyd; Akbulut, Hatem (PAMUKKALE UNIV, 2017)
    In this study, ultrasound assisted solution based chemical synthesis method has been developed to synthesize tin based graphene composite electrodes for Li-ion batteries. SnO2 was grown by using SnCl2.2H(2)O precursor ...
  • The Effect of Oxidants on the Formation of Multi-Walled Carbon Nanotube Buckypaper 
    Toçoğlu, Ubeyd; Cevher, Özgür; Güler, Mehmet Oğuz; Akbulut, Hatem (AMER SCIENTIFIC PUBLISHERS, 2012)
    In the present study, we report the systematic investigation of the effect of chemical oxidation on the structure of multi-walled carbon nanotubes (MWCNTs) and multi-walled carbon nanotubes buckypaper. The chemical oxidation ...
  • Towards high cycle stability yolk-shell structured silicon/rGO/MWCNT hybrid composites for Li-ion battery negative electrodes 
    Toçoğlu, Ubeyd; Mirac Alaf; Akbulut, Hatem (ELSEVIER SCIENCE SA, 2020)
    Owing to the highest known theoretical specific capacity of 4200 mAhg(-1), low lithiation voltage characteristics and natural abundance, silicon is considered as the most promising negative electrode material for lithium ...
  • Yumurta-Kabuk Morfolojili Hibrit Si/Grafen/Knt Nanokompozit Lityum İyon Pil Anotlarının Geliştirilmesi 
    Toçoğlu, Ubeyd (Sakarya Üniversitesi, 2020)
    Lityum iyon piller günümüz piyasasında en yaygın olarak kullanılan elektrokimyasal enerji depolama sistemleridir. Güncel lityum iyon pillerde anot olarak kullanılan grafit gram başına 372 mAh enerji depolayabilmekte olup ...