Abstract
An artificial graphite anode material (10–15 μm) is produced using coke at two sizes (10–15 μm, 2–5 μm) and the electrochemical properties are compared and discussed. We produce and measure an artificial graphite anode material using coke with a particle size of 10–15 μm, limited lithium ion insertion–desorption pathways, increased migration pathways, and low-speed charge–discharge characteristics. When a block is manufactured using coke at a particle size of 2–5 μm and an anode material is created with a particle size of 10–15 μm, voids capable of storing lithium ions between the coke particles form inside the anode material. These spaces are utilized and the capacity was measured. In addition, the lithium ion insertion-deintercalation path and lithium ion diffusion distance are controlled and the high-speed discharge properties were measured (78.3%) at low temperatures (5C/0.1C, − 10 °C). At the same time, the high specific surface area due to the small size of the coke was controlled by the binder pitch used in the block, leading to excellent initial efficiency performance.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by the Korea Evaluation Institute of Industrial Technology (KEIT) through the Carbon Cluster Construction project [10083621, Development of Preparation Technology in Petroleum-Based Artificial Graphite Anode] funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by JUH, JHJ, JDL, and JSI. The first draft of the manuscript was written by JUH and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Hwang, J.U., Cho, J.H., Lee, J.D. et al. Characteristics of an artificial graphite anode material for rapid charging: manufactured with different coke particle sizes. J Mater Sci: Mater Electron 33, 20095–20105 (2022). https://doi.org/10.1007/s10854-022-08826-1
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DOI: https://doi.org/10.1007/s10854-022-08826-1