The Effect of Calcination Temperature on the Electrochemical Performance of ZnO Coated LiMn_2O_4/MWCNT Nanocomposite Cathodes

• Authors: A. Akbulut , T. Cetinkaya , M. Guler , H. Akbulut
• Languages of publication: EN

Abstracts

EN

In this study, it is aimed to develop LiMn_2O_4/MWCNT nanocomposite cathode materials by using different calcination temperatures (300, 500, 700°C). The aim of using MWCNTs in the active material is to overcome poor conductivity and to increase stability of the electrodes during charging and discharging. The nanocomposites were produced by sol-gel method, which allows producing very fine particle size of LiMn_2O_4. LiMn_2O_4 and LiMn_2O_4/MWCNT were uniformly coated on an Al-foil to obtain 500 μm thicknesses with a specific amount of binder and conducting agent. The surfaces of cathodes were coated with ZnO by using magnetron sputtering PVD with a thickness of 10 nm. Coin-type (CR2016) test cells were assembled, directly using the LiMn_2O_4/MWCNTs and surface coated LiMn_2O_4/MWCNTs as anode and a lithium metal foil as the counter electrode.

Keywords

EN

82.47.Aa; 81.05.Mh; 81.20.Fw; 68.47.Gh

Discipline

• 68.47.Gh: Oxide surfaces
• 81.05.Mh: Cermets, ceramic and refractory composites
• 81.20.Fw: Sol-gel processing, precipitation(for reactions in sol-gels, see 82.33.Ln; for sol-gels as disperse system, see 82.70.Gg)
• 82.47.Aa: Lithium-ion batteries

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 2
• Pages: 331-334

Dates

published

2014-02

Contributors

author

A. Akbulut

• Sakarya University, Dept. of Environmental Engineering, Esentepe Campus, 54187, Sakarya, Turkey

author

T. Cetinkaya

• Sakarya University, Metallurgy and Materials Engineering, Esentepe Campus, 54187 Sakarya, Turkey

author

M. Guler

• Sakarya University, Metallurgy and Materials Engineering, Esentepe Campus, 54187 Sakarya, Turkey

author

H. Akbulut

• Sakarya University, Metallurgy and Materials Engineering, Esentepe Campus, 54187 Sakarya, Turkey

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Identifiers

DOI

10.12693/APhysPolA.125.331