Browsing Fen-Edebiyat Fakültesi by Author "Akbulut, Hatem"

Now showing items 1-15 of 15

A facile synthesis of zinc oxide/multiwalled carbon nanotube nanocomposite lithium ion battery anodes by sol-gel method

Köse, Hilal; Dombaycıoğlu, Şeyma; Aydın, Ali Osman; Akbulut, Hatem (ELSEVIER SCIENCE BV, 2015)

Free standing zinc oxide (ZnO) and multiwalled carbon nanotube (MWCNT) nanocomposite materials are prepared by a sol gel technique giving a new high capacity anode material for lithium ion batteries. Freestanding ZnO/MWCNT ...
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 ...
Electrochemical Characterization of Al3+ Doped Spinel Cathode Active Nanoparticles for Li-Ion Batteries

Bulut, Emrah; Akbulut, Hatem (POLISH ACAD SCIENCES INST PHYSICS, 2016)

Al3+ doped spinel structured cathode active nanoparticles were produced by microwave hydrothermal synthesis. Structural characterization of as synthesized nanoparticles was performed by X-Ray Diffraction (XRD) Spectroscopy ...
Free-standing SnO2/MWCNT nanocomposite anodes produced by different rate spin coatings for Li-ion batteries

Köse, Hilal; Aydın, Ali Osman; Akbulut, Hatem (THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2014)

Free standing SnO2/multiwalled carbon nanotube (MWCNT) nanocomposite anode materials were prepared for Li-ion batteries by sol-gel technique. Firstly, SnO2 precursor sols were synthesized after removing chloride ions. Then ...
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 ...
Production and characterization of free-standing ZnO/SnO2/MWCNT ternary nanocomposite Li-ion battery anode

Köse, Hilal; Dombaycıoğlu, Şeyma; Aydın, Ali Osman; Akbulut, Hatem (PERGAMON-ELSEVIER SCIENCE LTD, 2016)

High capacity ZnO/SnO2/MWCNT ternary nanocomposite films were prepared as free-standing anode materials by sol-gel spin coating method to increase the electrochemical discharge capacity of the Li-ion battery electrodes. ...
Reduced graphene oxide supported tin oxide-boron oxide flexible paper anodes for Li-ion batteries

Köse, Hilal; Dombaycıoğlu, Şeyma; Dombaycıoğlu, Şeyma; Akbulut, Hatem; Aydın, Ali Osman (SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, 2019)

Freestanding tin oxide-boron oxide/reduced graphene oxide (SnO2-B2O3/rGO) nanocomposite anode was produced for Li-ion cells. This binder-free flexible paper anode structure was fabricated by combining SnO2-B2O3 composite ...
Sol-gel preparation and electrochemical characterization of SnO2/MWCNTs anode materials for Li-ion batteries

Köse, Hilal; Aydın, Ali Osman; Akbulut, Hatem (ELSEVIER SCIENCE BV, 2013)

Sol-gel technique was used to prepare SnO2/MWCNT buckypaper composite films as anode material for Li-ion batteries. Firstly, MWCNT buckypapers were prepared and SnO2 precursor sols were synthesized after removing chloride ...
Sol-Gel Synthesis of Nanostructured SnO2 Thin Film Anodes for Li-Ion Batteries

Köse, Hilal; Aydın, Ali Osman; Akbulut, Hatem (POLISH ACAD SCIENCES INST PHYSICS, 2012)

Sol-gel technique was employed to prepare semiconductor tin dioxide (SnO2) thin films. Comparatively, it gives an advantage over other techniques by its low reaction temperature, easy process and low cost. The effect of ...
Structural properties of size-controlled SnO2 nanopowders produced by sol-gel method

Köse, Hilal; Dombaycıoğlu, Şeyma; Aydın, Ali Osman; Akbulut, Hatem (ELSEVIER SCI LTD, 2015)

SnO2 nanoparticles were synthesized by sol-gel method with different sol concentrations and the effect of sol concentration on the structural properties of SnO2 was investigated. The aim of this work is synthesizing of ...
Synthesis and characterization of advanced high capacity cathode active nanomaterials with three integrated spinel-layered phases for Li-ion batteries

Bulut, Emrah; Akbulut, Hatem (ELSEVIER SCIENCE SA, 2016)

Mesoporous cathode active materials that included undoped and separated Cu2+ and Co3+ doped spinels were prepared. The "doped spinel-Layered-Li-rich spinel" composite nanoparticles within the three integrated phased ...
The Effect of Different Organic Gelating Agents on Grain Size of ZnO Nanoparticles

Dombaycıoğlu, Şeyma; Köse, Hilal; Aydın, Ali Osman; Akbulut, Hatem (AL LOTNIKOW 32-46, PL-02-668 WARSAW, POLAND, 2014)

In this work, sol-gel method was used in order to synthesize ZnO nanoparticles. Zn(CH3COO)(2)center dot 2H(2)O was used to obtain ZnO precursor solution. To investigate the effect of organic gelating agents on grain size, ...
The effect of LiBF4 concentration on the discharge and stability of LiMn2O4 half cell Li ion batteries

Dombaycıoğlu, Şeyma; Köse, Hilal; Aydın, Ali Osman; Akbulut, Hatem (ELSEVIER SCI LTD, 2015)

Electrolytes were prepared with different LiBF4 salt concentrations in the ratio of 2:1 (w/w) Ethylene Carbonate (EC): Dimethyl Carbonate (DMC) solvents. Different LiBF4 concentrations were used in the electrolytes to ...
The effect of LiBF4 salt concentration in EC-DMC based electrolyte on the stability of nanostructured LiMn2O4 cathode

Dombaycıoğlu, Şeyma; Köse, Hilal; Aydın, Ali Osman; Akbulut, Hatem (PERGAMON-ELSEVIER SCIENCE LTD, 2016)

Electrolytes which have different LiBF4 salt concentrations (0.8 m, 1.0 m, 1.2 m and 1.4 m) in the ratio of 2:1 (w/w) Ethylene Carbonate (EC): Dimethyl Carbonate (DMC) solvents were prepared. Obtained electrolytes were ...
The Effect of Temperature on Grain Size of SnO2 Nanoparticles Synthesized by Sol-Gel Method

Köse, Hilal; Aydın, Ali Osman; Akbulut, Hatem (AL LOTNIKOW 32-46, PL-02-668 WARSAW, POLAND, 2014)

Tin dioxide nanoparticles were synthesized by sol-gel method and calcined at different temperatures in the range 350-750 degrees C. The SnO2 precursor solution was prepared from SnCl2 center dot 2H(2)O (tin (II) chloride ...