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Updated: Mar 19, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
Zero-Strain Na2FeSiO4 as Novel Cathode Material for Sodium-Ion Batteries
Shouding Li, Jianghuai Guo, Zhuo Ye1
1Ames Laboratory-US DOE and Department of Physics and Astronomy, Iowa State University , Ames, Iowa 50011, United States.
Abstract:
A new cubic polymorph of sodium iron silicate, Na2FeSiO4, is reported for the first time as a cathode material for Na-ion batteries. It adopts an unprecedented cubic rigid tetrahedral open framework structure, i.e., F4̅3m, leading to a polyanion cathode material without apparent cell volume change during the charge/discharge processes. This cathode shows a reversible capacity of 106 mAh g(-1) and a capacity retention of 96% at 5 mA g(-1) after 20 cycles.
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