Abstract
In this study, high‐ and ultra‐high‐loading NMC622‐based cathodes (7.0 and 18.0 mAh/cm²) and graphite‐based anodes (9.0 and 22.5 mAh/cm²) were prepared by using a porous carbon structure as current collector. All electrodes in this work were prepared by an NMP‐free, PFAS‐free and scalable process. Full cells with areal capacities of 7 mAh/cm² and 18 mAh/cm² were assembled and tested. The results show an excellent cycling stability, reaching up to 950 cycles at 10 mA/cm² for the cells with ultra‐high‐loading electrodes (capacity 18 mAh/cm²) and 650 cycles at 8 mA/cm² for the cells with high‐loading electrodes (capacity of 7 mAh/cm²). The influence of cathode porosity on the electrochemical performance in cells capacity of 7 mAh/cm² showed that a lower porosity leads to a poorer rate capability as well as a worse cycling capability (400 cycles at 6 mA/cm²). Post‐mortem analysis reveal that the anode aging is more pronounced during full cell cycling. Further the scalability of the production process was demonstrated by using a padder tool. With that, cathodes with a loading of 5 mAh/cm² were produced in a roll‐to‐roll process.
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.
