Abstract
Solid-state polymer electrolytes (SPEs) are proposed as promising candidates for application in sodium batteries to replace the organic liquid electrolytes for enhanced safety. In this study, we first verified the feasibility of PEO-NaPF6 SPE in solid-state sodium batteries (SSBs). The explored PEO-NaPF6 SPEs exhibit a relatively high ionic conductivity of ∼6.3 × 10−4 S cm−1 at 80 °C, a large Na+ transference number (tNa+) of 0.58, and sufficient thermal stability at around 200 °C for SSBs. More importantly, the PEO-NaPF6 SPEs afford excellent long-term cycling performances for the Na∣∣Na3V2(PO4)3@C cell at 80 °C (85.8% capacity retention at 2 C after 200 cycles) and the Na∣∣NaNi2/9Cu1/9Fe1/3Mn1/3O2 cell at 80 °C (77% capacity retention at 0.5 C after 100 cycles). All of the properties make the PEO-NaPF6 SPE a potential alternative for application in SSBs.
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.
