Journal
SOLID STATE IONICS
Volume 274, Issue -, Pages 88-93Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2015.03.008
Keywords
Poly vinyl acetate; Composite cathode; Lithium battery; LiNi0.5Mn1.5O4
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Funding
- Italian Ministry of Economic Development [ENEA-MSE 2012-14]
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This paper describes the preparation and characterization of a high voltage composite cathode for lithium ion-batteries based on LiNi0.5Mn1.5O4 as the active material and poly vinyl acetate (PVAc) as the binder. To assess the effect of the PVAc binder on the electrode properties, the PVAc-based electrode is compared with a traditional one prepared by using Teflon as the binder. The electrode morphologies are investigated by scanning electron microscopy and the thermal behavior of the PVAc-based electrode evaluated by thermo gravimetry and differential thermal analysis. The distribution of oxygen, manganese, and nickel on the electrode is investigated by X-ray electron diffraction spectroscopy. The electrodes are used as cathodes to prepare lithium metal cells and their electrochemical properties are investigated through galvanostatic charge/discharge cycles conducted at various discharge currents. (C) 2015 Elsevier BM. All rights reserved.
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