Abstract
In this study, we prepared <TEX>$LiFePO_4$</TEX>- poly (sodium 4-styrenesulfonate) (PSS) composite by the hydrothermal method and ball-milling process. Different wt% PSS were added to <TEX>$LiFePO_4$</TEX>. The cathode electrodes were made from mixtures of <TEX>$LiFePO_4$</TEX>-PSS: SP-270: PVDF in a weighting ratio of 70%: 25%: 5%. <TEX>$LiFePO_4$</TEX>-PSS powders were characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM). The electrochemical properties of <TEX>$LiFePO_4$</TEX>-PSS/Li batteries were analyzed by cyclic voltammetry, charge/discharge tests, and AC impedance spectroscopy. A Li/<TEX>$LiFePO_4$</TEX>-PSS battery with 4.75 wt% PSS shows the best electrochemical properties, with a discharge capacity of 128 mAh/g.
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