Abstract
We conducted a detailed evaluation of the electrochemical performance of artificial graphite (AG) and natural graphite (NG) from four leading global companies: AG-1, AG-2, AG-3, and NG-4 towards Ni-rich Li-ion batteries. We found that AG-2, an artificial graphite variant, demonstrated superior performance with exceptional capacity, rapid charging capabilities, and impressive capacity retention. AG-2 achieved a specific capacity of 338.97 mAh g−1, outperforming AG-1 (321.16 mAh g−1), AG-3 (314.43 mAh g−1), and NG-1 (328.08 mAh g−1). This superiority was further confirmed by high C-rate tests ranging from 2 C to 5 C. Notably, after 500 cycles, AG-2 maintained 91.18% of its initial capacity, significantly surpassing AG-1 (89.44%), AG-3 (78.78%), and NG-1 (84.16%). The study attributes AG-2’s exceptional performance to its refined properties such as smaller particle size, fewer graphite imperfections, and a higher 2H phase content. These characteristics lead to increased active material in the anode, enhancing battery capacity, and to less material degradation over time, ensuring consistent capacity retention. Overall, AG-2 stands out as a highly efficient and cost-effective option for lithium-ion battery applications, eclipsing other commercial graphite alternatives.
Funder
Office of National Higher Education Science Research and Innovation Policy Council
IRPC Public Company Limited
Thailand Science Research and Innovation
Publisher
The Electrochemical Society
Cited by
1 articles.
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