Effect of electroplating polyaniline on electrochemical kinetics of La–Mg–Ni-based hydrogen storage alloy

摘要: Abstract A new polyaniline (PANI)-coated technique is adopted for the La–Mg–Ni-based alloy La 0.80 Mg 0.20 Ni 2.70 Mn 0.10 Co 0.55 Al in order to advance its electrochemical kinetic characteristics. In this treatment, aniline monomers are electroplated on particles form films. FE-SEM observation and UV–vis analysis results revealed that coral-like atrovirens PANI deposited surface of alloy. Through PANI-coating capacity retention rate at 200th cycle electrodes amounts up from original 82.3% 86.4% high discharge ability increased 24.7% 35.6% a current density 1500 mA g −1 . Linear polarization, anodic polarization cyclic voltammetry measurements suggest charge-transfer resistance decreases hydrogen absorption alloys increases after PANI-coating.