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Ecofriendly Synthesis of Waste-Tire-Derived Graphite Nanoflakes by a Low-Temperature Electrochemical Graphitization Process toward a Silicon-Based Anode with a High-Performance Lithium-Ion Battery by Shu-Chi Wu; Ching-Wei Lin; Pai-Chun Chang; Tzu-Yi Yang; Shin-Yi Tang; Ding-Chou Wu; Cheng-Ru Liao; Yi-Chung Wang; Ling Lee; Yi-Jen Yu; Yu-Lun Chueh is a Engineering article available to read on EtoBox.

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Here, the successful transformation of graphitic carbon with a high degree of graphitization and a nanoflake structure from pyrolytic tire carbon black was demonstrated. First, amorphous carbon black with a porous structure was obtained after pyrolysis and simple preacid treatments. Subsequently, the carbon black was converted into a highly graphitic structure at a relatively low temperature (850 °C) through a facile electrochemical route using molten salt, which is ecofriendly and has high potential for large-scale graphitization compared to conventional incineration techniques. Moreover, we further improved the crystallinity and uniformity of the product simultaneously by directly mixing the metal oxide catalyst Fe 2 O 3 with a carbon precursor. The mechanism of this metal-catalyzed electrochemical graphitization has been discussed in detail. To confirm their potential in practical applications, the asprepared graphitized nanoflakes were used as conductive additives for silicon anodes in lithium-ion batteries, which showed a performance comparable to those utilizing commercial Super-P additives, exhibiting an initial Coulombic efficiency of approximately 79.7% and a high capacity

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Author

Shu-Chi Wu; Ching-Wei Lin; Pai-Chun Chang; Tzu-Yi Yang; Shin-Yi Tang; Ding-Chou Wu; Cheng-Ru Liao; Yi-Chung Wang; Ling Lee; Yi-Jen Yu; Yu-Lun Chueh

Publisher

American Chemical Society (ACS)

Published

2023

Language

EN

Field

Engineering (Physical Sciences)