The organic phase for aluminum batteries

The electrochemical behavior of an Al anode in organic electrolytes was inv estigated. Common contemporary electrolytes for Li batteries were selected, based on their activity toward Al anodic dissolution. Significant improvem ent (anodic shift) of E-Al/Al(3+) by up to 1 V occurs in several electrolyt es, and can exhibit efficient coulombic oxidation of aluminum. Enhanced E-A l/Al(3+) electrolytes include (C2H5)(4)NCl (TEA), and AlCl3 in gamma-butyro lactone (BLA) and acetonitrile (ACN) solvents, forming solutions such as TE A/BLA, TEA/ACN, and concentration optimized AlCl3/KCl/BLA. gamma-butyrolact one based electrolytes exhibit evidence of quasireversible Al activity crea ting possibilities for rechargeable batteries. (C) 1999 The Electrochemical Society. S1099-0062(98)12-019-9. All rights reserved.