Electrosynthesis of layered double hydroxides of nickel with trivalent cations

✍ Scribed by L. Indira; Mridula Dixit; P.Vishnu Kamath

• Book ID: 103899770
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 500 KB
• Volume: 52
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(94)01939-8

✦ Synopsis

Layered double hydroxides (LDHs) of nickel with alummmm, chromium, manganese and iron, with the same structure as a-nickel hydroxide, have been electrosynthesized.

This paves the way for their possible electrochemical impregnation in sintered nickel plaques for use as electrodes m nickel/cadmium batteries.

All these LDHs stabilize the a-nickel hydroxide structure m alkaline media and retam electrochemical activity, as evidenced by cyclic voltammetric studies. The nickel-aluminium LDH shows the highest coulombic efficiency, while the nickel-iron LDH may prove to be unsuitable as a battery electrode material as it catalyzes oxygen evolution by 50 mV, as compared with pure nickel hydroxide.