Abstract
The energy and power density of lithium-ion batteries (LIBs) can be effectively improved by designing flexible free-standing electrodes. Here, a flexible film composed of Fe 3 O 4 nanoparticles (NPs) embedded in N-doped carbon nanofibers (Fe 3 O 4 /NCNFs) was prepared through electrospinning and subsequent annealing process. The Fe 3 O 4 /NCNFs film can be directly used as anode materials for LIBs without conductive additive, current collector, and binder. Electrochemical measurement results indicate that the Fe 3 O 4 /NCNFs electrode exhibits excellent cycling stability and retains the capacity of 522 mAh g −1 after 200 cycles at 0.1 A g −1 . Furthermore, the Fe 3 O 4 /NCNFs electrode also shows good rate performance and still obtains a specific capacity of 407 mAh g −1 even at 5 A g −1 . The superior electrochemical performance should be attributed to the flexible self-standing characteristic of the electrode and the synergistic effects between 3D conductive NCNFs and Fe 3 O 4 NPs.
Original language | English |
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Pages (from-to) | 263-270 |
Number of pages | 8 |
Journal | Applied Surface Science |
Volume | 459 |
DOIs | |
Publication status | Published - 30 Nov 2018 |
Externally published | Yes |
Keywords
- Electrochemical performance
- Fe O /C nanofibers
- Flexible free-standing
- Lithium-ion battery