High-performance quasi-solid-state flexible sodium metal battery: Substrate-free FeS2-C composite fibers cathode and polyimide film-stuck sodium metal anode
- Mohanta, Jagdeep; Kim, Hye-Jung; Jeong, Sang Mun; Cho, Jung Sang; Ahn, Hyo-Jun; Ahn, Jou-Hyeon; Kim, Jae-Kwang
- Issue Date
- ELSEVIER SCIENCE SA
- FeS2 fiber; Substrate-free electrode; Electrospinning; Hybrid solid electrolyte; Solid-state flexible sodium metal battery
- CHEMICAL ENGINEERING JOURNAL, v.391
- Journal Title
- CHEMICAL ENGINEERING JOURNAL
- A substrate-free carbon-coated FeS2-fiber-based cathode for quasi-solid-state rechargeable flexible sodium metal batteries is reported for the first time. A facile electrospinning technique followed by carbonization is employed for the synthesis of a novel cathode for a flexible sodium metal batteries. For fabrication of the solid-state flexible battery, a Na3Zr2Si2PO12-based hybrid solid electrolyte is utilized as the separator and electrolyte. A discharge capacity of about 808.26 mAh g(-1) is obtained in the first charge-discharge cycle, which is greater than that of any previously reported Na/FeS2-based battery. The carbon coating on the FeS2 fiber allows the flexible battery to have an enhanced discharge capacity of 633.43 mAh g(-1), even after undergoing five charge-discharge cycles at a 0.1 C rate. At a 2 C rate, a high specific capacity of 393.5 mAh g(-1) is maintained, and the value increases on the return from 2 C to 0.1 C until it reaches a value similar to the initial 0.1 C rate. A superior rate capability with enhanced electrochemical stability of the quasi-solid-state sodium metal battery is also demonstrated due to the substrate-free flexible carbon-coated FeS2-fiber-based cathode. Owing to its high flexibility and electrochemical properties, the flexible solid-state sodium metal battery has considerable potential for high-performance sodium batteries.
- Files in This Item
- There are no files associated with this item.
- Appears in
- 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.