期刊
MATERIALS LETTERS
卷 326, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2022.132961
关键词
Energy storage and conversion; Cathode; Nanocomposites; Electrochemical performance
资金
- National Natural Science Foundation of China [52172227, 52102296]
- Graduated Innovative Fund of Wuhan Institute of Technology [CX2021154]
Mn-based NASICON compounds with different Ti/V ratios were synthesized and their structure and electrochemical properties were investigated. Among them, Na3.7MnTi0.3V0.7(PO4)(3) showed the best cycle stability and rate capability, demonstrating potential application as a cathode material for Na-ion batteries.
Mn-based NASICON (Na super ionic conductor)-typed compounds are potentially applied as cathode materials for Na-ion batteries. However, cycling instability and poor rate capability limits its large-scale application. Herein, Na3+xMnTi1-xVx(PO4)(3) with various Ti/V ratios were synthesized. The influence of the Ti/V ratios on the composition, structure and electrochemical properties were investigated. With increasing with content of V, cell parameters a (and b) and cell volume increases. Among these materials, Na3.7MnTi0.3V0.7(PO4)(3) exhibits the best cycle stability and rate capability (62.7 mAh/g at 5 C, 53.2 mAh/g at 10 C), demonstrating potential application as cathode material for Na-ion batteries.
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