Abstract
Flexible core-shell polyacrylonitrile (PAN)/carbon nanotubes (CNTs)@Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/Uio-66-NH2 (PC@PU) hybrid nanofiber membrane was prepared by coaxial electrospinning technology. PAN polymer and CNTs particles were used as core to improve the membrane structure stability for further ensuring the thermal stability of the separator. PVDF-HFP and Uio-66-NH2 nanoparticles were applied to reinforce the affinity of separator to electrolyte. The PC@PU composite membrane delivered high thermal stability and fantastic electrolyte affinity (545.76%). Furthermore, compared with Celgard 2325 commercial membrane, the PC@PU composite membrane exhibited higher porosity (80.22%) and higher Li+ conductivity (3.43 mS/cm), leading to superior rate performance and long-term cycle stability. The cell with the PC@PU hybrid membrane displayed high specific capacity of 143 mAh/g at 1C and only 0.0259% capacity attenuation of each cycle after 1000 cycles. In addition, the PC@PU composite membrane demonstrated remarkable flexibility, and the cells with bent separators exhibited outstanding electrochemical performance. Hence, the PC@PU hybrid nanofiber membrane can pave a way for the further application in the field of secondary batteries separator.
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.
