Urchin‐Like CoSe 2 as a High‐Performance Anode Material for Sodium‐Ion Batteries
Dongguk University · Nankai University · +1 more institution
Abstract
Urchin‐like CoSe 2 assembled by nanorods has been synthesized via simple solvothermal route and has been first applied as an anode material for sodium‐ion batteries (SIBs) with ether‐based electrolytes. The CoSe 2 delivers excellent sodiation and desodiation properties when using 1 m NaCF 3 SO 3 in diethyleneglycol dimethylether as an electrolyte and cycling between 0.5 and 3.0 V. A high discharge capacity of 0.410 Ah g −1 is obtained at 1 A g −1 after 1800 cycles, corresponding to a capacity retention of 98.6% calculated from the 30th cycle. Even at an ultrahigh rate of 50 A g −1 , the capacity still maintains 0.097 Ah g −1 . The reaction mechanism of the as‐prepared CoSe 2 is also investigated. The results…
Citation impact
- FWCI
- 40.91
- Percentile
- 100%
- References
- 56
Authors
7Topics & keywords
- Anode
- Materials science
- Electrolyte
- Sodium
- Nanorod
- Chemical engineering
- Ion
- Nanotechnology