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

Energies

关键词: cathode;    Li-ion;    super-iron;    battery;    electric vehicle;    lithium battery;   

DOI  :  10.3390/en3050960

来源: mdpi

【 摘 要 】

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, Na₂FeO₄, 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.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland.