A High Capacity Li-Ion Cathode: The Fe(III/VI) Super-Iron Cathode

Stuart Licht
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Stuart Licht: Department of Chemistry and Institute of Basic Energy Science and Technology, George Washington University, Washington, DC 20052, USA

Energies, 2010, vol. 3, issue 5, 1-13

Abstract: A super-iron Li-ion cathode with a 3-fold higher reversible capacity (a storage capacity of 485 mAh/g) is presented. One of the principle constraints to vehicle electrification is that the Li-ion cathode battery chemistry is massive, and expensive. Demonstrated is a 3 electron storage lithium cathodic chemistry, and a reversible Li super-iron battery, which has a significantly higher capacity than contemporary Li-ion batteries. The super-iron Li-ion cathode consists of the hexavalent iron (Fe(VI)) salt, Na 2 FeO 4 , and is formed from inexpensive and clean materials. The charge storage mechanism is fundamentally different from those of traditional lithium ion intercalation cathodes. Instead, charge storage is based on multi-electron faradaic reduction, which considerably enhances the intrinsic charge storage capacity.

Keywords: cathode; Li-ion; super-iron; battery; electric vehicle; lithium battery (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2010
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