Synergistic electronic and crystal structure regulation of Na <sub> 2+2 <i>x</i> </sub> Fe <sub> 2− <i>x</i> </sub> (SO <sub>4</sub> ) <sub>3</sub> <i>via</i> Zr doping for high-performance sodium-ion batteries
Na<sub>2.5</sub>Fe<sub>1.71</sub>Zr<sub>0.02</sub>(SO<sub>4</sub>)<sub>3</sub> with a synergistically optimized electronic and crystal structure is designed for high-performance sodium ion batteries. The orbital interaction induced by Zr doping significantly improves its intrinsic conductivity. Additionally, the longer Na-O bonds after Zr doping accelerate the Na<sup>+</sup> transfer kinetics. Ultimately, Na<sub>2.5</sub>Fe<sub>1.71</sub>Zr<sub>0.02</sub>(SO<sub>4</sub>)<sub>3</sub> exhibits a high specific capacity of 96.4 mAh g<sup>-1</sup> at 0.1C with 85% retention after 10 000 cycles at 30C.
Authors
- Haiyan Wang (ORCID: https://orcid.org/0000-0003-4987-6006)
- Dan Sun (ORCID: https://orcid.org/0000-0003-4513-7046)
- Xiaobing Huang
- Xianbi Zhang
- Shuang Xiang
Institutions
- Central South University (CN)
- Hunan University of Arts and Science (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc04836b
- Citations
- 1
- Primary Topic
- Advancements in Battery Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.73