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$NiS_{1−x}Se_{x}$ Nanoparticles Anchored on Nitrogen-Doped Reduced Graphene Oxide as Highly Stable Anode for Sodium-Ion Battery
| Content Provider | MDPI |
|---|---|
| Author | Zhang, Shunjiang Wang, Ruirui Cao, Ronggen Fang, Fang Wu, Renbing |
| Copyright Year | 2022 |
| Description | Nickel sulfides are regarded as one of the promising anode materials for sodium-ion batteries (SIBs), but the sluggish electrodes kinetics and rapid capacity decay, caused by their intrinsic low electrical conductivity and high bulk expansion, greatly limit their practical application. To overcome these obstacles, nano-sized, selenium-doped, nickel sulfide particles, anchored on nitrogen-doped reduced graphene oxide composites $(NiS_{1−x}Se_{x}$@N–rGO), are rationally synthesized. The broad $Na^{+}$ diffusion channels, resulting from Se doping, as well as the short $Na^{+}$ transferring path, attributed from nano-size scale of $NiS_{1−x}Se_{x}$ particles, endow $NiS_{1−x}Se_{x}$@N–rGO composites with ultrafast storage kinetics. Moreover, strong coupled effect between the $NiS_{1−x}Se_{x}$ and N–rGO is beneficial to the uniform dispersion of $NiS_{1−x}Se_{x}$ nanoparticles, improving electrical conductivity and suppressing the volume variation in charge/discharge process. Furthermore, the cut-off discharge voltage is modulated to realize the smaller volume change during cycle process. As a result, the fabricated anode of SIBs based on $NiS_{1−x}Se_{x}$@N–rGO composites exhibits a high specific capacity of 300 mAh $g^{−1}$, at the current density of 1 A $g^{−1}$, after 1000 cycles with almost no capacity degradation. |
| Starting Page | 566 |
| e-ISSN | 22279717 |
| DOI | 10.3390/pr10030566 |
| Journal | Processes |
| Issue Number | 3 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-03-14 |
| Access Restriction | Open |
| Subject Keyword | Processes Electrochemistry Sodium-ion Batteries Se Doping Nickel Sulfide Rgo Nanosheet |
| Content Type | Text |
| Resource Type | Article |
