High C-rate performance of LiFePO4/carbon nanofibers composite cathode for Li-ion batteries

Carbon nanofibers (CNFs) were incorporated into LiFePO4 composite cathode through conventional slurry formulation. Pristine LiFePO4 and modified LiFePO4 cathode samples were characterized by scanning electron microscopy, galvanostatic charge/discharge measurements, and cyclic voltammetry. Electroche...

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Bibliographic Details
Published in:Current applied physics 2020, 20(1), , pp.1-4
Main Authors: Adepoju, Adewale A., Williams, Quinton L.
Format: Article
Language:English
Subjects:
Carbon nanofibers
Cathode
Li-ion batteries
LiFePO4
물리학
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Summary:Carbon nanofibers (CNFs) were incorporated into LiFePO4 composite cathode through conventional slurry formulation. Pristine LiFePO4 and modified LiFePO4 cathode samples were characterized by scanning electron microscopy, galvanostatic charge/discharge measurements, and cyclic voltammetry. Electrochemical measurements at room temperature showed LiFePO4/CNF composite to exhibit a higher specific discharge capacity of ~150 mAh g−1 at 0.1C, excellent high rate performance at >5C capability rates, and better cycling stability with 98.4% capacity retention at 5C after 200 cycles. The improved high C-rate performance of the LiFePO4/CNF composite cathode can be attributed to long-range conductive networks formed through bridges created by the CNFs. The enhanced battery performance indicates promise for high-power applications. [Display omitted]
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2019.09.014