Electrochemical impedance spectra (EIS) of RE (NiCoMnTi)5 alloys (RE = La, Ce, Pr, Nd) were measured and analyzed under different depths of discharge (DOD).

• Ce(NiCoMnTi)_5? Pr(NiCoMnTi)_5和Nd(NiCoMnTi)_5四种贮氢合金电极在不同放电深度(DOD；depth of discharge)下的交流阻抗谱.