Spheroidization Modification of Artificial Graphite Applied as Anode Materials for High Rate Lithium Ion Batteries

Yu Shiang Wu; Tzuo Shing Yeh; Yuan Haun Lee; Yu Chi Lee

doi:10.4028/www.scientific.net/AMR.201-203.421

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 201-203Spheroidization Modification of Artificial...

Spheroidization Modification of Artificial Graphite Applied as Anode Materials for High Rate Lithium Ion Batteries

Abstract:

Rate capability tests showed that artificial graphite after spheroidization treatment exhibited a higher capacity in the higher C-rate region (2~10C) at a 0.1 C rate charge and variable C-rates discharge. Artificial graphite after spheroidization treatment exhibited a higher capacity in the higher C-rate region (0.5~9 C) at the same C-rate charge and discharge. These results show that artificial graphite after spheroidization treatment has a large amount of isotropic microstructures that lithium ions can intercalate into the graphene layers from all directions via edge-plane surfaces. Therefore, the artificial graphite is more suitable than natural graphite for the anode materials of high rate batteries.

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Advanced Manufacturing Systems, ICMSE 2011

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Periodical:

Advanced Materials Research (Volumes 201-203)

Pages:

421-424

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.201-203.421

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Online since:

February 2011

Authors:

Yu Shiang Wu, Tzuo Shing Yeh, Yuan Haun Lee, Yu Chi Lee

Keywords:

Anode, Artificial Graphite, Lithium-Ion Battery, Spheroidisation

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