Abstract
Graphite is the most widely used anode material for lithium ion batteries (LIBs). However, the performance of graphite is limited by its slow charging rates. In this work, porous graphite was successfully prepared by nickel-catalyzed gasification. The existence of the pores and channels in graphite particles can greatly increase the number of sites for Li-ion intercalation-deintercalation in graphite lattice and reduce the Li-ion diffusion distance, which can greatly facilitate the rapid diffusion of lithium ions; meanwhile, the pores and channels can act as buffers for the volume change of the graphite in charging-discharging processes. As a result, the prepared graphite with pores and channels exhibits excellent cycling stability at high rate as anode materials for LIBs. The porous graphite offers better cycling performance than pristine graphite, retaining 81.4 % of its initial reversible capacity after 1500 cycles at 5 C rates. The effective synthesis strategy might open new avenues for the design of high-performance graphite materials. The porous graphite anode material is proposed in applications of high rate charging Li-ion batteries for electric vehicles.
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.
