Impact of Ball Milling on Electrochemical Performance in Coal-Derived Graphite

Le résumé fourni par la source

As the shift to renewables continues, new sources of critical materials such as graphite are needed. One potential feedstock being investigated is coal. Coal-derived graphite shows promise as an anode material for Li-ion batteries1. In this work, a white forest coal-derived graphite will be studied, and its physical and electrochemical properties will be presented. In an effort to reduce the particle size and modify the coal-derived graphite, ball milling is used. Through this additional processing, the physical and electrochemical properties of the graphite are changed. These differences will be presented in this work. The physical properties that will be examined for the milled and unmilled graphites include microstructure such as d-spacing and crystallite size, BET surface area and morphology through SEM imaging. The electrochemical performance of the materials will also be discussed. The performance will be measured through initial capacity loss (ICL), gravimetric capacity, rate capability and cycle life. References: A. Paul et al., Journal of The Electrochemical Society, 171, 039001 (2024)

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