Ion storage performance of a polymer for mono-, di- and tri-valent metal ions in non-aqueous electrolytes.

A cost-effective quinone-pyrrole conjugated polymer is utilized as an electrode for non-aqueous Al, Zn and Li-ion batteries. Reversible capacities of 120 mA h g-1 at 50 mA g-1 for Al-ion batteries and 108 and 175 mA h g-1 for Zn and Li-ion batteries, respectively, at 100 mA g-1 are observed. Thousands of stable cycles were obtained at 1000 mA g-1 current density, providing sufficient evidence for a range of applications of the polymer in electrochemical energy storage.

Ellagic acid--a novel organic electrode material for high capacity lithium ion batteries.

Ellagic acid, a naturally occurring polyphenol, extracted from pomegranate husk, is found to be a very good organic electrode material for rechargeable lithium batteries with high reversible capacities of ~450 and 200 mA h g(-1) at C/10 and C/2.5 discharge rates, respectively; ex situ NMR studies reveal possible lithiation-delithiation modes at different stages of the charge-discharge process.