Abstract
High-rate capacities and specific capacities are important indicators for evaluating lithium-ion battery (LIB) anodes. To improve the electrochemical properties of needle coke-based anode materials, oxygen plasma treatment was used. Various analyses were performed to assess the impact of the oxygen plasma treatments on the chemical, structural, and morphological properties of the needle coke samples. The oxygen plasma treatment effectively introduced oxygen functional groups (hydroxyl, ether, carbonyl, and carboxyl groups) without significant structural changes to the needle coke samples, and the O/C ratio increased to 0.23 after the plasma treatment. The synergistic effect of the increased oxygen content and the defects formed on the surface by plasma treatment improved the electrochemical properties of the needle coke-based anodes. The discharge capacity of the oxygen plasma-treated needle coke-based LIBs increased to a maximum of 20.48 %, and the retention rate was 74.51 % at 5 C with respect to 0.1 C. The oxygen plasma-treated needle coke material prepared via a simple method could have an important role in improving the rate capacities and specific capacities of LIBs.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
