Abstract
Molybdenum diselenide (MoSe2) has drawn a lot of attention for high-performance sodium ion batteries (SIBs) as anode material, for its high theoretical capacity as well as large interlayer distance. Nevertheless, the low capacity and the poor cycling stability greatly hinder their application. Herein, a facile strategy to improve the storage performance of sodium was proposed by the in-situ growth of MoSe2 on zeolitic imidazolate framework-8 (ZIF-8)-derived nitrogen doped porous carbon dodecahedron (MoSe2/N-PCD). The N-PCD can provide a fast electron transfer route for the MoSe2, and the robust interface between MoSe2 and N-PCD can relief the structure changes of the electrode during the sodiation/desodiation. When used as an anode for SIBs, the prepared MoSe2/N-PCD electrode displays a large initial specific capacity of 464 mA h g−1 at 0.2 A g−1, and the capacity maintains at 437 mA h g−1 after 500 cycles. Furthermore, at a high current density of 2 A g−1, the electrode can still show a capacity of 223 mA h g−1 after 1000 cycles (capacity retention∼83%). This work demonstrates an effective way to prepare high performance MoSe2 based anode materials for sodium-ion battery.
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.