Abstract
Lithium iron phosphate mixed with nano-sized acetylene black (LiFePO4-AB) was synthesized by a hydrothermal method and subsequent high-energy ball-milling process. Different contents of AB were added to improve the electronic conductivity of LiFePO4. The structural and morphological performance of LiFePO4-AB was investigated by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscope, and high-resolution transmission electron microscope. LiFePO4-AB/Li batteries were fabricated in an argon-filled glove box, and their electrochemical performance was analyzed by cyclic voltammetry and charge/discharge tests. The XRD results demonstrate that LiFePO4-AB has an olivine-type structure indexed to the orthorhombic Pnma space group. LiFePO4-AB/Li battery with 10 wt% AB shows the best high-rate discharge properties with the discharge capacities of 116 mAh g−1 at 1 C and 85 mAh g−1 at 10 C at room temperature.
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The authors acknowledge the financial supports from National Key Basic Research and Development Program of China (Grant No. 2010CB631001) and the China Postdoctoral Science Foundation Funded Project (Grant No. 20090451124). This research project also receives supporting funds from the second-stage Brain Korea 21.
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Sun, G., Jin, B., Sun, G. et al. Characteristics of lithium iron phosphate mixed with nano-sized acetylene black for rechargeable lithium-ion batteries. J Appl Electrochem 41, 99–106 (2011). https://doi.org/10.1007/s10800-010-0213-8
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DOI: https://doi.org/10.1007/s10800-010-0213-8