Development of Boron-Containing Electrolyte Additive for Lithium-Ion Batteries

Sarigol Z., ÖZKAN G., ÖZKAN G.

JOURNAL OF ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE, cilt.21, sa.3, 2024 (SCI-Expanded, Scopus)

Özet

In this study, triphenylphosphine boron trifluoride (BF3 PPh3) was synthesized to be used as an electrolyte additive in Li/LiCoO2 half-cells. Fourier-transform infrared spectroscopy, X-ray diffraction, nuclear magnetic resonance, and X-ray photoelectron spectroscopy analysis techniques were used to determine the structure and composition of the synthesized substance. The battery performance was investigated by adding certain amounts of BF3 PPh3 in 1 M LiPF6-ethylene carbonate/dimethyl carbonate/diethyl carbonate (1:1:1 by volume) electrolyte. CR2032 coin cells were assembled with the electrodes and electrolytes prepared in the laboratory. The electrochemical behaviors of the battery were investigated via cyclic voltammetry and charge-discharge tests. The addition of 0.5 wt% and 1 wt% BF3 PPh3 in the electrolyte improved the lithium-ion battery's ionic conductivity and capacity retention. The results show that BF3 PPh3 has potential applications in lithium-ion batteries.