Effects of Tween 80 dispersant on LiFePO4/C cathode material prepared by sonochemical high-temperature ball milling method

Qing Zhao, Li Xuetian, Zhongbao Shao, Chengjun Liu, Ron Zevenhoven

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    Li-ion batteries have drawn increasing attention because of attractive characteristics such as high operating voltage, high particle density, long cycle life, low self-discharge, and not showing a memory effect. LiFePO4/C cathode material was prepared via a sonochemical high-temperature ball milling method using Tween 80 dispersant. The effects of the Tween 80 on the electrochemical properties of LiFePO4/C were investigated. The experimental results showed that the Tween 80 improved the surface area of LiFePO4/C, and the prepared cathode material showed a better electrochemical performance: it delivered discharge capacities of 159.0 mAh g−1 at 0.1 C and 110.4 mAh g−1 at 10 C, which were higher than for Tween 80-free samples. Moreover, the discharge capacity was 119.6 mAh g−1 at a rate of 5.0 C over 100 cycles while the capacity retention was 94.2%.

    Original languageUndefined/Unknown
    Pages (from-to)5565–5573
    JournalIonics
    Volume25
    Issue number11
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA1 Journal article-refereed

    Keywords

    • dispersant
    • Lithium-ion battery
    • Ball-milling
    • cathode

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