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- Title
Flexible and free-standing La<sub>0.33</sub>Ti<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>/C nanofibers film as a novel high-performance anode for sodium- and potassium-ion batteries.
- Authors
Dai, Jing; Jing, Jian; Yang, Jian-Ping; Zhang, Wen; Liu, Shao-Xiong; Wang, Qian-Fu; Wen, Jia-Xing; Hu, Hai; Li, Hui-Fang; Liu, Li
- Abstract
Na superionic conductor (NASICON)-type La0.33Ti2(PO4)3 (LaTP) is firstly proposed as sodium/potassium storage materials. The density functional theory (DFT) calculations show that LaTP has good electronic character and low Na+/K+ migration barriers. The flexible La0.33Ti2(PO4)3/C nanofiber film is synthesized via electrostatic spinning and investigated as free-standing electrode applied to sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) in this work. The low band gap and Na+/K+ migration barriers of LaTP, unique morphology, and complete conductive carbon net allow the La0.33Ti2(PO4)3/C nanofibers film to deliver high capacity (296.3 mAh·g−1 for SIBs and 235.8 mAh·g−1 for PIBs), excellent rate performance (142.5 mAh·g−1 for SIBs and 50.5 mAh·g−1 for PIBs at 1.00 A·g−1), and superior cyclability above 1000 cycles. The full-cell tests show that the material has a good application prospect, indicating a promising flexible anode material for SIBs and PIBs.
- Publication
Rare Metals, 2023, Vol 42, Issue 10, p3387
- ISSN
1001-0521
- Publication type
Article
- DOI
10.1007/s12598-023-02332-x