a high capacity li-ion cathode the fe(iiivi) super-iron cathode高容量锂离子阴极fe(iiivi)super-iron阴极.pdfVIP

Energies 2010, 3, 960-972; doi:10.3390/en3050960 OPEN ACCESS energies ISSN 1996-1073 /journal/energies Review A High Capacity Li-Ion Cathode: The Fe(III/VI) Super-Iron Cathode Stuart Licht Department of Chemistry and Institute of Basic Energy Science and Technology, George Washington University, Washington, DC 20052, USA; E-Mail: slicht@; Tel.: +1-703-726-8225 Received: 31 March 2010 / Accepted: 12 April 2010 / Published: 6 May 2010 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 FeO , and is formed from inexpensive and clean materials. The charge storage 2 4 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-i