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Browsing Metalurji ve Malzeme Mühendisliği / Metallurgy and Materials Engineering by Author

Browsing Metalurji ve Malzeme Mühendisliği / Metallurgy and Materials Engineering by Author "Güler, Mehmet Oğuz"

Now showing items 1-20 of 33

A high-performance composite positive electrode based on graphene and Li (Ni1/3Co1/3Mn1/3)O-2

Aslihan Guler; Hatice Gungor; Seyma Ozcan; Çoban, Aslan; Güler, Mehmet Oğuz; Akbulut, Hatem (WILEY, 2018)

The cathode electrodes in commercial Li-ion cells are usually coated on aluminum foils, while the anode part is coated on copper current collector. However, these metallic foils of the electrodes are relatively heavy ...
A high-performance composite positive electrode based on graphene and Li (Ni1/3Co1/3Mn1/3)O-2

Aslihan Guler; Hatice Gungor; Seyma Ozcan; Çoban, Aslan; Güler, Mehmet Oğuz; Akbulut, Hatem (WILEY, 2018)

The cathode electrodes in commercial Li-ion cells are usually coated on aluminum foils, while the anode part is coated on copper current collector. However, these metallic foils of the electrodes are relatively heavy ...
Binary Cu/LiCr2/3V1/6Mn1/6O2 p-type semiconductor nanocomposite structures as cathode electrodes for Li-ion batteries

Güler, Mehmet Oğuz; Aslihan Erdas; Deniz Nalci; Akbulut, Hatem (ELSEVIER SCI LTD, 2015)

In this study, a strategy used to design high capacity, Cu coated LiCr2/3V1/6Mn1/6O2 electrodes for lithium-ion batteries is discussed. The advantages of the LiCr2/3V1/6Mn1/6O2 component and its influence on the structural ...
Carbon-silicon composite anode electrodes modified with MWCNT for high energy battery applications

Akbulut, Hatem; D. Nalci; A. Guler; Duman, Soner; Güler, Mehmet Oğuz (ELSEVIER SCIENCE BV, 2018)

In this study, we comparatively study the electrochemical characteristics of Si, Si-C and vacuum-assisted filtration fabrication of a novel free-standing Si@C/Mutli Wall Carbon Nanotubes (MWCNT) nanocomposite. The surfaces ...
Carbon-silicon composite anode electrodes modified with MWCNT for high energy battery applications

Akbulut, Hatem; D. Nalci; A. Guler; Duman, Soner; Güler, Mehmet Oğuz (ELSEVIER SCIENCE BV, 2018)

In this study, we comparatively study the electrochemical characteristics of Si, Si-C and vacuum-assisted filtration fabrication of a novel free-standing Si@C/Mutli Wall Carbon Nanotubes (MWCNT) nanocomposite. The surfaces ...
EFFECT OF ALTERNATIVE HEAT-TREATMENT PARAMETERS ON THE AGING BEHAVIOR OF SHORT-FIBER-REINFORCED 2124 Al COMPOSITES

Yahya Altunpak; Aslan, Serdar; Güler, Mehmet Oğuz; Akbulut, Hatem (INST ZA KOVINSKE MATERIALE I IN TEHNOLOGIE, 2016)

The 2124 Al alloy and a composite of the 2124 Al alloy reinforced with 20 % of volume fractions of delta-Al2O3 short fibers made by squeeze casting were subjected to controlled and systematic aging treatments. The materials ...
Effect of oxygen partial pressure on the microstructural and physical properties on nanocrystalline tin oxide films grown by plasma oxidation after thermal deposition from pure Sn targets

Güler, Mehmet Oğuz; Gültekin, Deniz; Uysal, Mehmet; Alp, Ahmet; Akbulut, Hatem; Uysal, Mehmet (PERGAMON-ELSEVIER SCIENCE LTD, 2008)

In this work, microstructural and physical properties were studied in the tin oxide films deposited by thermal evaporation of Sn films on stainless steel substrates followed by in situ D.C. plasma oxidation at 200 degrees ...
Facile synthesis of nanoparticles titanium oxide as high-capacity and high-capability electrode for lithium-ion batteries

Karim El Ouardi; Mouad Dahbi; Charifa Hakim; Güler, Mehmet Oğuz; Akbulut, Hatem; Abdeslam El Bouari; Ismael Saadoune (SPRINGER, 2020)

Anatase TiO2 is prepared via a facile and eco-friendly synthesis method where titanium tetra isopropoxide and sodium alginate are used as the titanium precursor and templating agent, respectively. Structural characterization ...
Free standing flexible graphene oxide plus alpha-MnO2 composite cathodes for Li-Air batteries

Seyma Ozcan; Tokur, Mahmud; Çetinkaya, Tuğrul; Aslihan Guler; Uysal, Mehmet; Güler, Mehmet Oğuz; Akbulut, Hatem (ELSEVIER SCIENCE BV, 2016)

The most important factor regarding to influence the electrochemical performance of lithium-air battery is to choose an effective catalyst for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). In this ...
Freestanding graphene/MnO2 cathodes for Li-ion batteries

Seyma Ozcan; Aslihan Guler; Çetinkaya, Tuğrul; Güler, Mehmet Oğuz; Akbulut, Hatem (BEILSTEIN-INSTITUT, 2017)

Different polymorphs of MnO2 (alpha-, beta-, and gamma-) were produced by microwave hydrothermal synthesis, and graphene oxide (GO) nanosheets were prepared by oxidation of graphite using a modified Hummers' method. ...
Freestanding nano crystalline Tin@carbon anode electrodes for high capacity Li-ion batteries

Güler, Mehmet Oğuz; M. Guzeler; D. Nalci; M. Singil; E. Alkan; Doğan, Metin; A. Guler; Akbulut, Hatem (ELSEVIER SCIENCE BV, 2018)

Due to their high specific capacities tin based electrode materials are in the focus of many researchers almost for a decade. However, tin based electrodes are hampered in practical applications due to the volumetric changes ...
Freestanding nano crystalline Tin@carbon anode electrodes for high capacity Li-ion batteries

Güler, Mehmet Oğuz; M. Guzeler; D. Nalci; M. Singil; E. Alkan; Doğan, Metin; A. Guler; Akbulut, Hatem (ELSEVIER SCIENCE BV, 2018)

Due to their high specific capacities tin based electrode materials are in the focus of many researchers almost for a decade. However, tin based electrodes are hampered in practical applications due to the volumetric changes ...
Graphene assisted template based LiMn2O4 flexible cathode electrodes

Aslihan Guler; Seyma Ozcan Duman; Deniz Nalci; Mustafa Guzeler; Bulut, Emrah; Bulut, Emrah; Güler, Mehmet Oğuz; Akbulut, Hatem (WILEY, 2018)

In this paper, a systematic method has been developed to produce highly flexible and robust graphene/LiMn2O4 (G/LCMO) and graphene/LiCr0.05Mn1.95O4 (G/LMO) free-standing composite cathode electrodes with increased specific ...
Graphene assisted template based LiMn2O4 flexible cathode electrodes

Aslihan Guler; Seyma Ozcan Duman; Deniz Nalci; Mustafa Guzeler; Bulut, Emrah; Bulut, Emrah; Güler, Mehmet Oğuz; Akbulut, Hatem (WILEY, 2018)

In this paper, a systematic method has been developed to produce highly flexible and robust graphene/LiMn2O4 (G/LCMO) and graphene/LiCr0.05Mn1.95O4 (G/LMO) free-standing composite cathode electrodes with increased specific ...
High efficiency TiO2/MWCNT based anode electrodes for Li-ion batteries

Güler, Mehmet Oğuz; Çetinkaya, Tuğrul; Uysal, Mehmet; Akbulut, Hatem (WILEY, 2015)

Freestanding multiwalled carbon nanotube and titanium (IV) oxide anode paper was prepared by vacuum filtration of multiwall carbon nanotubes/TiO2 hybrid material, which was synthesized by the radio frequency magnetron ...
High Rate Capability Core Shell SnO2/Multiwall Carbon Nanotube Nano Composite Electrodes for Li-Ion Batteries

Akbulut, Hatem; Güler, Mehmet Oğuz (AMER SCIENTIFIC PUBLISHERS, 2015)

In this study, core shell SnO2/MWCNT nanocomposites were produced as a high rate anode material for Li-ion batteries via two steps. Firstly, MWCNT based buckypapers were produced via vacuum filtration techniques. Then, a ...
Intermetallic Ni3Sn4-based graphene@carbon hybrid composites for lithium-ion batteries

Güler, Mehmet Oğuz; Mustafa Guzeler; Aslihan Guler; Deniz Nalci; Seyma Ozcan Duman; Mustafa Mahmut Singil; Engin Alkan; Mucahit Dogan; Akbulut, Hatem (WILEY, 2018)

In this paper, nanosized Ni3Sn4 nanoparticles were synthesized by chemical reduction technique. A facile strategy is also developed to synthesize the yolk-shell Ni3Sn4 nanoparticles decorated between the layers of multilayer ...
Intermetallic Ni3Sn4-based graphene@carbon hybrid composites for lithium-ion batteries

Güler, Mehmet Oğuz; Mustafa Guzeler; Aslihan Guler; Deniz Nalci; Seyma Ozcan Duman; Mustafa Mahmut Singil; Engin Alkan; Mucahit Dogan; Akbulut, Hatem (WILEY, 2018)

In this paper, nanosized Ni3Sn4 nanoparticles were synthesized by chemical reduction technique. A facile strategy is also developed to synthesize the yolk-shell Ni3Sn4 nanoparticles decorated between the layers of multilayer ...
International Renewable and Sustainable Energy Conference IRSEC

Karim El Ouardi; Charifa Hakim; Mouad Dahbi; Güler, Mehmet Oğuz; Akbulut, Hatem; Abdeslam El Bouari; Ismael Saadoune (IEEE, 2019)

A green and friendly synthesis method was used to prepare Anatase TiO2 and the electrochemical performances of this metal oxide as negative electrode for lithium ion batteries were studied. X-Ray diffraction analysis confirm ...
ITO/MWCNT Nanocomposites as New Novel Anode Electrodes for Li-Ion Batteries

Güler, Mehmet Oğuz; Akbulut, Hatem (AMER SCIENTIFIC PUBLISHERS, 2015)

In this study, we present a new anode electrode consisting of Indium Tin Oxide and multiwall carbon nanotube based buckypapers for high efficient lithium ion batteries. Core/shell Indium Tin Oxide/Buckypapers were produced ...