Abstract
The surface of a LiNi0.8Co0.15Al0.05O2 cathode material is coated by a 10–20nm thick FeF3layer using a solventing-out crystallization process. Scanning electron microscope (SEM) and X-ray diffraction (XRD) results demonstrate that the morphology and structure of LiNi0.8Co0.15Al0.05O2 are not affected by FeF3 layer. Electrochemical properties of bare and FeF3-coated LiNi0.8Co0.15Al0.05O2 are investigated at room and high temperatures. Compared with bare LiNi0.8Co0.15Al0.05O2, FeF3-coated LiNi0.8Co0.15Al0.05O2 shows higher discharge capacity and capacity retention at different rates at 25°C, in addition to better cycle performance at 55°C. Furthermore, differential scanning calorimetry (DSC) analysis shows that the existence of FeF3coating helps to enhance the thermal stability of LiNi0.8Co0.15Al0.05O2.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.