Investigation of the Supercapacitor Performance of NiCoAl(OH)₂ from the Co-Precipitation Method.

Herein, NiCoAl(OH)₂ materials, a by-product in the preparation of the precursor of cathode materials for lithium ion batteries, were employed as supercapacitor electrodes. The reaction time was changed from 2 to 48 h to produce hydroxide products, which were analyzed using physical and electrochemical methods. The hydroxide material reacted for 2 h exhibited a good average particle strength of 34.