Abstract
It is of paramount importance to develop rechargeable lithium-ion batteries (LIBs) with higher energy to meet the demands of emerging energy storage applications. Currently, LIBs use LiCoO2 as the cathode and graphite as the anode, which shows moderate capacity of ~140 mAh g-1 and ~350 mAh g-1, respectively. As a result, the energy density is limited to 120-160 Wh kg-1. In this context, we have investigated a layered-spinel material (Li2MnO3, LiMn2O4, LiNi2/3Mn1/6Co1/6O2, NMC 811,LiFePO4) as a high-capacity cathode. This cathode exhibits a theoretical capacity of ~ 250 mAh g-1, and in our preliminary work, we demonstrated a high capacity of ~ 250 mAh g-1. We also find that this cathode shows high voltage of 4.5 V and stable cycling over 50 cycles. On the anode side, we investigated BiFeO3(BFO) as a potential high-capacity anode, which delivers a high capacity of ~750 mAh g-1, double the capacity of graphite. In the following research, we will explore the possibility of assembling Li-ion full cells using these two materials in order to demonstrate high energy density.The Li-ion storage mechanism in these two materials will also be thoroughly investigated by electrochemical and physical characterizations, such as electrochemical impedance spectroscopy (EIS), ex-situ XRD, and X-ray photoelectron spectroscopy.
Sign-in/Register to access full text options 
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.
