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

► Technique of PANI electroplated La-Mg-Ni-based hydrogen storage alloy is found. ► PANI films are deposited on the surface of the alloy uniformly. ► Electrochemical kinetics property of La-Mg-Ni-based alloy is improved by PANI-coated. ► Suitable time of PANI-coated technique is about 2 min.