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Taiwan researchers develop nano-crystalline Fe3V3O8 material as efficient advanced anode for Na-ion batteries

A team from Chung Yuan Christian University in Taiwan has fabricated a novel Fe3V3O8 (FVO) anode material for Na/Li-ion storage using hydrothermal technology for the first time. The electrochemical results indicated that the initial sodiation capacity of the FVO anode is as high as 805 mA h g−1 at 100 mA g−1, and a reversible sodiation capacity of 540 mA h g−1 is maintained over 200 cycles at 500 mA g−1—more than 1.8 times the commercial hard carbon of ∼300 mA h g−1.


Muruganantham et al.

A paper on the work is published in the Journal of Power Sources.

Overall, the FVO material exhibited significantly higher electrochemical performance, demonstrating promising suitability for sodium-ion storage.

—Muruganantham et al.

Sodium-ion batteries (Na-ion or SIB) have faced several challenges that have hindered their commercialization, including a larger ionic radius of Na+ (1.02 Å) compared to that of Li+ (0.76 Å), lower energy density and specific capacity.

Due to the larger ionic radius issue, it is difficult to use graphite as an anode for high-performance SIBs. Therefore, battery scientists are focusing on novel sodium-ion storage anode materials with high-rate and capacity performance for large-scale battery applications, the researchers said.


  • Rasu Muruganantham, Jun-Ying Huang, Pei-Jun Wu, Liang-Yin Kuo, Chun-Chuen Yang, Yan-Gu Lin, Ju Li, Wei-Ren Liu, Nano-crystalline Fe3V3O8 material as an efficient advanced anode for energy storage applications, Journal of Power Sources, Volume 613, 2024, doi: 10.1016/j.jpowsour.2024.234947



They'll need more than 200 cycles to go commercial, IMO.
More like 3000 - 7000.
If this is too heavy to use in EVs, it will be used for grid balancing and other stationary storage applications, so say it is used once per day, and you expect a 20 year lifetime, that is over 7000 cycles.
However, they could limit the discharge limit to maybe reach that.
No need to go 0-100% each day if you want longevity.


500mAh per gram is actually competitive for use with EVs. Lots of other battery spec items they didn’t list but as far as cycle life it looks like they stopped at 200 cycles, based on their chart capacity was actually rising over time/cycles.

FVO has been a promising material for Anodes with a significant amount of prior research showing the potential for good capacity and long cycle life. Curious to see if anyone will actually bring it to the commercial market.

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