The Investigation Of Electronegativity Functional Group Effects On Maleimide Electrolyte Additive In Lithium Ion Battery

-, Giyanto (2016) The Investigation Of Electronegativity Functional Group Effects On Maleimide Electrolyte Additive In Lithium Ion Battery. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

This research studies the electronegativity functional group effects on maleimide-based electrolyte additives to the solid electrolyte interface (SEI) formation on the graphite anode. Two maleimide compounds with the electronegativity functional groups as substituent, 4-flouro-o-phenylenedimaleimide (F-MI) and 4-cyano-o-phenylenedimaleimide (CN-MI) have been successfully synthesized. 1M LiPF6 in ethylene carbonate (EC): propylene carbonate (PC): di-ethylene carbonate (DEC) (3:2:5 in volume) containing 0.1 wt % of F-MI and CN-MI additives can provide higher electrochemical stability and higher reversibility capability. The presence of the electronegativity functional group (F and CN) was found that the SEI layer formation is used to suppress the decomposition electrolyte within higher reduction potential at 2.35 to 2.33 V vs. Li/Li+. The cells with F-MI and CN-MI additives provide lower charge-transfer resistance and higher ionic diffusivity in comparison with commercial product (O-MI) and blank electrolyte. In addition, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) analysis were also conducted in order to understand the effects of additive on the morphology of the MCMB electrode surface. Our results show that F-MI and CN-MI additives are the most suitable additives due to its excellent SEI formation and battery performance enhancement compares with blank electrolyte and commercial product (O-MI).

Item Type: Thesis (Masters)
Uncontrolled Keywords: solid electrolyte interface; electronegativity functional group; maleimide-based additive; lithium ion battery
Subjects: Q Science > QD Chemistry > Polymerization
Q Science > QD Chemistry > QD502 Chemical kinetics
T Technology > TP Chemical technology
T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial.
Divisions: Faculty of Industrial Technology > Physics Engineering > (S2) Master Theses
Depositing User: GIYANTO -
Date Deposited: 30 Mar 2017 08:33
Last Modified: 26 Dec 2018 02:06
URI: http://repository.its.ac.id/id/eprint/2078

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