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Issue 10, 2015
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Eldfellite, NaFe(SO4)2: an intercalation cathode host for low-cost Na-ion batteries

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Abstract

The mineral eldfellite, NaFe(SO4)2, is characterized as a potential cathode for a Na-ion battery that is fabricated in charged state; its 3 V discharge versus sodium for reversible Na+ intercalation is shown to have a better capacity, but lower insertion rate than Li+ intercalation. The theoretical specific capacity for Na+ insertion is 99 mA h g−1. After 80 cycles at 0.1C versus a Na anode, the specific capacity was 78 mA h g−1 with a coulomb efficiency approaching 100%.

Graphical abstract: Eldfellite, NaFe(SO4)2: an intercalation cathode host for low-cost Na-ion batteries

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Article information


Submitted
22 Jul 2015
Accepted
27 Aug 2015
First published
02 Sep 2015

Energy Environ. Sci., 2015,8, 3000-3005
Article type
Paper

Eldfellite, NaFe(SO4)2: an intercalation cathode host for low-cost Na-ion batteries

P. Singh, K. Shiva, H. Celio and J. B. Goodenough, Energy Environ. Sci., 2015, 8, 3000
DOI: 10.1039/C5EE02274F

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