Journal
FRONTIERS IN CHEMISTRY
Volume 8, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2020.00328
Keywords
lithium-ion batteries; FeOOH; FeOOH; GO; anode materials; electrochemistry performance
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Funding
- National Natural Science Foundation of China [61503124]
- Henan Science and Technology Agency Scientific and Technological Research [182102310935]
- Key Scientific Research Project for Higher Education of Henan Province [16A360018]
- Postdoctoral Science Foundation of China [2019M650666]
- Fundamental Research Funds for the Universities of Henan Province [NSFRF180306]
- Young Backbone Teachers Foundation of Henan Polytechnic University [2019XQG-13, 2019XQG-05, 2019XQG-20]
- Special Medical Project of Henan Polytechnic University [NSFRF1621]
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A facile ultrasonication method was used to uniformly mix nanospindle-shaped FeOOH (80-100 nm) and a conductive matrix of graphene oxide (GO) to form FeOOH/GO composites. No carbon peak was observed in the X-ray diffraction pattern, indicating that the graphene oxide did not stack together and that the dispersion of graphene was very high. X-ray photoelectron spectroscopy (XPS) tests showed that the formation of Fe-O-C bonds played a positive role in electron transport, revealing that it has a certain impact on the electrochemical performance of FeOOH/GO. The FeOOH/GO was further characterized by TGA, and the content of GO in the synthesized sample was 6.68%. Compared with that of FeOOH, the initial discharge capacity of FeOOH/GO could reach 1437.28 mAh/g. Additionally, compared to that of pure FeOOH, the reversibility of the electrochemical reaction of FeOOH/GO was improved, and the impedance value was reduced. Finally, FeOOH/GO was used directly as a lithium-ion battery (LIB) anode material to improve the kinetics of the Lithium ions insertion/extraction process and improve ionic conductivity.
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